Please read the description carefully.
These are untested JUMP eBike Batteries with 40 cells 18650 LG MH1 36v 12.8Ah 460Wh in 10s4p configuration. Battery model # INR18650MH1-10S4P. They contain x40 high quality 3200mAh LG MH1 18650 lithium-ion cells. Packs should have around 90-95% capacity. Packs are “untested” and sold as-is.
For DIY use, requires the use of a CAN Controller dongle to activate/wake the BMS. Instructions to DIY your own dongle can be found here. Alternatively you can also perform this hack to wake them up. You can also replace the BMS or just harvest cells.
These packs don’t have glue, making them perfect for harvesting cells. To do so you have to open and extract the cells, you’ll have to cut and clean the Nickel interconnects using snips. Once the Cells are out and clean you will have to test them using a charger like this.
Available in quantities x1, x2, x3 x4 and x6.
Typical Capacity: 3200mAh Nominal Capcity: 3100mAh Diameter: 18mm Length: 65mm Voltage nominal: 3.6V Charge voltage cut-off: 4.2V Discharging cut-off: 2.5V Module Dimentions: 16″x 3″x1.75″
Required Dongle CAN Controller
This a STM32 Based CAN controller to wake up the JUMP 36v Scooter Battery pack BMS system. Fully Coded by ALEX GRADEA with source code found here. ready to be wired and used.
Battery Pin Out:
Red: 5v Positive Black: 5v Ground Yellow: CANH Green: CANL Orange: Connect to Pink Pink: Connect to Orange Blue: Not used White: Not used
Power ConnectorRed: LOAD Positive Black: LOAD Negative Yellow: Charge Positive Black: Charge Positive
Watch this video for more info:
Combine multiple packs using my DC Powerstrip:
Note that these are reclaimed packs, so the actual cell voltage you receive may be lower than the label shows. These items are sold for DIY and Second Life purposes. Listings that are “untested” as sold as-is and cannot be returned, exchanged or refunded. We make no guarantees that all cells will be usable. Even when sold as “new”, “NOS”, or “like-new”, they may be in less than perfect condition. Buyer is responsible for proper cell recycling/disposal. Sold as-is. No refunds.
If you buy a product from us and then realize you don’t have, or don’t want to acquire, the tool(s) or information needed to make our product(s) work for your specific build, this does not constitute valid grounds for replacements, exchanges or refunds. You are responsible for doing your due diligence before making any purchases.
NEW YORK residents:On 3/2/2023 New York passed a law banning the sale of lithium-ion batteries for mobility devices that are not certified to UL 2271, and the assembly and reconditioning with cells removed from used batteries for commercial sale within the state of New York (more details here). New York residents, y ou are solely responsible for researching, understanding and complying with all pertinent regulatory rules, laws, statutes, and NY safety standards.
Safety is important to us, we don’t want people to get hurt or property to get damaged, especially when working with DIY and/or second-life lithium-ion batteries. All batteries everywhere are inherently dangerous, so we urge all who work with DIY and/or second-life lithium-ion batteries to take safety seriously so as to avoid causing any harm to self, others or property.
Everything you need to know about e-bike batteries [from a battery engineer]
Would you be the person taking the stairs or the escalator?
I’ll be honest. barring the one-off day that I’m feeling particularly sprightly, I would just hop on the escalator with those 30 people on the right. And I’m willing to guess that most of you would too.
What we can gauge from this picture is that most people would rather do as little work as possible to get from point A to point B. This is especially true when it comes to commuting on a bike. The picture above is analogous to the difference between a regular bike and an e-bike.
Even if we address all the concerns when it comes to biking in a city (like safe biking infrastructure), we can’t expect to change fundamental human behavior. when given the option between less work or more work to achieve the same outcome, people will more likely choose to do less work.
Since getting my e-bike, I can comfortably bike from my home in Somerville to the Seaport district in Boston. a roughly 5-mile trip. in just about 20-minutes. All of a sudden, biking 5-miles is a piece of cake. I also don’t have to spend time sitting in traffic, waiting for public transit, or worry about showing up to a meeting looking like I swam across the Charles river to get there.
The beauty of an e-bike is that it makes cycling an inclusive mode of transportation because it doesn’t discriminate by age or physical ability.
When it comes to purchasing an e-bike though, there are a plethora of options for both the bike and battery. So how do you decide which one is best for your needs? As a battery engineer who has built hundreds of batteries and logged way too many hours soldering battery packs, here are my thoughts on the most commonly asked questions when it comes to e-bike batteries.
If you’re new to battery terminology, you might want to start here: Battery terms that every e-bike owner should know.
In this post, we’ll cover the following questions:
What is the best e-bike battery?
This is one of the hardest questions to answer. There are so many variables that go into what makes a good battery and what’s best for you, may not be the best for me. Even then, a good battery can perform poorly if it’s not cared for properly.
Battery packs are made up of individual battery “cells”. Cells are classified into cylindrical cells (like your AA and AAA) and prismatic cells (like the one in your phone). Each class of battery is manufactured in a variety of form-factors (in the battery world we use this term to mean size). The most commonly used form-factor of cells in an e-bike battery pack is the 18650.
A battery pack is only as good as it’s weakest cell.
When it comes to batteries, in my experience, there is a strong correlation between price and quality. I don’t follow this rule when it comes to most things like for example, box wine (I’m just saying, there are plenty of really good box wine options these days!). When it comes to batteries though, you really don’t want to be compromising on quality because you’ll eventually end up having to pay the price.
Here are some things to keep in mind when purchasing an e-bike:
Cell Manufacturers: Panasonic, LG, and Samsung have a good reputation in the battery industry for their high quality cells, so paying a premium for these cells is certainly worth it. If the e-bike you’re trying to buy doesn’t have or provide cell manufacturer information, they’re likely not going to be a reliable source anyway.
Cell Chemistry: Lithium-ion (li-ion) batteries are the best option for e-bikes. Although lead-acid batteries are significantly cheaper, they’re three times as heavy as their li-ion equivalents.
Li-ion has several variants of cell chemistry. The most popular ones for e-bikes are Nickel Manganese Cobalt (NMC), Lithium Cobalt Oxide (LCO), and Lithium Iron Phosphate (LFP). The metrics to look for when selecting a cell chemistry are:
- Specific Energy: has an impact on the range of your battery.
- Specific Power: how the battery handles high load scenarios like going up
- a hill.
- Safety: does the chemistry have a history of high in-field failures.
There are trade-offs when choosing one chemistry over another, but as we’ve shown in the image below, NMC and LFP are both great options that both offer the best value in terms of performance, price, and safety.
Picking the right battery chemistry has to do with figuring out what matters most to you. Do you want a battery that has a longer range (higher specific energy) but doesn’t have as much power? Or do you want a battery that has a more power (higher specific power) but may not last as long?
In my opinion, the best e-bike batteries are likely going to be made from cells manufactured by Panasonic, LG, or Samsung with either LFP or NMC cell chemistry.
What is the range of an e-bike battery?
The range of a battery pack depends on the amount of energy packed inside of it and is measured in Watt-Hours (Wh). Watt?
Watt-hours are calculated by multiplying the battery capacity, in Amp-hours, by the battery Voltage, in Volts.
Let’s assume that, on average, 1-mile requires about 25Wh of energy. So a 14Ah, 36V battery should get you about 25-miles per charge.
Keep in mind that the weight of the rider, outside temperature conditions, and the amount of pedaling will make a significant difference in range.
A word of caution: the range that e-bike manufacturers provide should be taken with a grain of salt. That number is generated from tests that are run in perfectly tailored lab conditions. Do you charge any of your electronics in an incubation chamber set at 28° C with a lab-grade charger that applies the perfect current while charging? Yeah, I don’t either. And so, We should assume that the manufacture-specified range is delivered only if the battery is charged and discharged under ideal conditions i.e. not real world conditions.
For a more realistic estimate, shave off 15% of the manufacturer specified range and assume this padded number to be your real range.
If you’re looking for a longer range, choose a battery that has higher capacity (Ah). If you’re looking for more power, choose a battery that has higher voltage (V). Learn more why voltage and capacity matter.
What is the lifespan of an e-bike battery?
There are several factors that affect the lifetime of a battery such as:
- environmental conditions: temperature during charging discharging
- charging rate: how fast or slow your battery is charged
- charging voltage: what voltage the battery is charged to
- depth of discharge (DoD): what voltage the battery is discharged to
The list above isn’t exhaustive but, in general, batteries decay as a function of time in the charged state. Period.
Day 1: You get your new e-bike and charge it up to 100% and go on a bike ride. When you come home, you charge the bike back up to 100% and you’re excited to ride it again soon.
Day 2. 364: Life get’s in the way and you still haven’t been out on your bike since that first ride.
Day 365: One year later, it’s the perfect day for a bike ride and you finally have some time on your hands. You head to your basement, unlock your bike, and excitedly turn it on. 80% charge. What? You clearly remember charging your bike to 100% last year before moving it to the basement!
The truth is, we can’t beat thermodynamics. I’ll say it again: batteries decay as a function of time in the charged state.
Now, because you left your battery at 100% for a whole year in a basement with no temperature control, you inadvertently caused your battery to lose a certain amount of irreversible capacity. Your range will be ~20% lower and you’ll likely have to replace your battery sooner than you expected. The table below shows you how much recoverable capacity exists in a battery after storing it at different temperatures and different charge states for 1-year.
This is why a lot of electronics come with batteries that are only partially charged. to help slow down this decay. That being said, it’s hard to track how long e-bikes and their batteries have been sitting in warehouses before being delivered to your door so you could get a battery that has been decaying for a year or two.
Manufacturers also tend to overrate their batteries and will make claims about certain batteries having a lifetime of at least 1,000 cycles. Show.me.the.data.
The lifetime of a lithium-ion battery is described as the number of cycles until the capacity (Ah) drops below 80% of it’s initial capacity. In general, this is roughly 250-400 cycles (depending on battery chemistry and other factors) which amounts to roughly 1.5 to 2 years if you charge discharge daily and care for your battery properly.
How to charge your e-bike battery to make it last longer
- The thing that will kill your battery faster than anything else is leaving it charged at elevated temperatures. If it’s 80 degrees outside and you have your e-bike fully charged, move it indoors where it’s cooler and try to drain the battery as soon as possible.
- Charge your battery at room temperature as often as possible.
- When sourcing an e-bike battery charger, the slower the charge rate the better. For example, if you have a 2-Amp charger, and your battery is a 14 Ah battery pack, you are charging at 14 Ah / 2-Amps = 7-hours. This is a nice, slow charge which will certainly improve the longevity of your battery pack. Avoid charging at rates that are faster than 2-hours for a full charge.
There’s a lot that goes into choosing the best battery for you e-bike, and there certainly isn’t a one-size-fits-all approach. But if I were buying an e-bike battery today, here’s what I’d do: LFP or NMC, slow charge, avoid storing or charging in hotter temperatures, and leave the battery at around 30% charge if you don’t plan on using it for a while.
Have questions? We’d love to help. You can get in touch using the contact form or find us on @somerville_ev
Also, subscribe below for alerts on our next post to learn more about batteries!
Folding Ebike 48V 20AH Lithium Battery for RANDRIDE Hummer
Removable 48V 20AH Samsung/LG lithium battery to ensure a long life expectancy and distinguished performance.The single range can be up to 7 5 miles per charge on pedal-assist mode and around 50 miles on pure electric power mode.
RANDRIDE.Shipping Policy
Free Shipping Service：
RANDRIDE have product warehouses in the Canada, Poland and HongKong. To make our products to be shipped easily and quickly, and providing customers with better after-sales support services.
Therefore, we provide free shipping service.（Except remote countries or regions that need to be charged remote surcharges or cannot be reached by logistics). Product shipping fee and taxes are paid by sellers, buyers are not required to pay shipping fee and taxes. We cannot ship to PO Boxes or APO, please be sure to include a detailed shipping address. Please click here to view countries/regions that can be shipped.
Order Processing Time：
We begin processing your order within 3 to 7 days after purchase (Monday to Friday).
Once your order has been processed and shipped, you will receive a confirmation email with shipment tracking number. Order real-time tracking information will be updated when your parcel arrives your country by sea or railway. FedEx or UPS or DPD or Postal or Truck logistics company will receive your parcel and update the tracking information. You can check your order tracking number for updates via this link： https://www.17track.net/en
Shipping Method：
Due to the particularity of ebike batteries, it cannot be shipped by air, so our shipping methods are mainly sea and railway. And delivered to your home by FedEx or UPS or DPD or Postal or Truck logistics company in your country.
Your parcel will be transported in two stages, the first stage is sea or rail shipping, and the second stage is FedEx or UPS or DPD or Postal and other express shipping. Your parcel first arrives in your country by sea or rail, then the FedEx or UPS or DPD or Postal or Truck logistics company will receive your parcel at the port or train station in your country, and update your parcel tracking information on their official website, finally deliver the parcel to your home.
You can first check the sea or rail shipping status of your parcel through the inquiry link of the sea and rail logistics company’s website: http://yulong.kingtrans.net/WebTrack （Please Google translate the page into English and enter the your tracking number for inquiries.）
Your e-bike will arrive to your doorstep in a big box. All you’ll need to do is unpack, check all accessories, assemble the wheels, mount the pedals, place the handlebar, and make sure all parts is tight. Our technical support team are always available to help, you can contact us via this email： support@randridebikes.com / randridebikes @gmail.com if you have any problems.
Delivery Times：
We will prioritize the product warehouse closest to the delivery address for shipping to ensure that your e-bike can be delivered to your home faster. Affected by the distance between the country of the destination and the product warehouse, the service policy of the logistics company and the logistics policy of the destination. The minimum delivery time is about 3-5 days （ working day） and the maximum is about 4-6 weeks （ working day）. Please click here to check your country delivery time.
Shipping Changes Order Cancellation:
Before Shippment
Order Cancellation: If you cancel the order that was placed in 2 hours, the processing fee will not be charged. If you cancel orders that haven’t entered the shipping process yet, 10% of the order amount will be charged as the cost of electric bike assembly and packaging, ebike parts procurement and shipping costs.
Change of Shipping Address: No charge fee.
Exchanges Item: No charge fee
After Shipping
Order Cancellation: If your order is shipped and cannot be modified, you may reject the package and 20% of the order amount will be charged as a reshipping fee and processing fee.
Change of Address: If you successfully change your address, 50 will be charged as a processing fee. If you fail to change your address, you may reject the package and 20% of the order amount will be charged as a reshipping fee and processing fee.
Exchanges Item: If you successfully exchange the item, 50 will be charged as a processing fee. If you fail to change, you may reject the package and 20% of the order amount will be charged as a reshipping fee and processing fee.
1.Reshipping refers to the cost of reprocessing a returned parcel that has already been received and shipping it to a warehouse for storage, not the shipping fee caused by the return.
2.If it is not the return or exchange caused by the quality problem of ebike, buyer need to shall bear the shipping fee and shipping insurance costs caused by delivery and return.（The cost will be deducted from the order amount）
RANDRIDE.Return Refund Policy
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
To start a return, you can contact us at support@randridebikes.com / randridebikes @gmail.com. If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
1.FREE REPLACEMENT RETURN
Free replacement: please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.
In rare instances, the item may be damaged during transportation as received. If damage occurs due to shipping, please contact randridebikes@gmail.com and provide us with photos or videos proof for critically-damaged parts or other quality-related issues. Our customer service team will help to arrange the free replacement.
Definition of critically-damaged items: the main structure of the product is obviously deformed and affects its normal functions in any form.
Note: the following situations will be seen as normal and will not apply to the free replacement or return policy:
- A) Minor damage to the outer packaging.
- B) Minor scratches or paint loss on the product.
- C) Damage to parts or wearing parts after excessive use.
- D) Damage to parts or wearing parts after using for a certain while or a certain number of times.
Non-replaceable items include, but are not limited to:
For non-quality issues: customer may ask for product replacement or return within 30 days after received it. A 25 % processing fee will be applied. The shipping fee and shipping insurance costs incurred by the return of non-quality problems shall be borne by the customer. RANDRIDE will provide a return shipping label, and the designated carrier will collect the return package. The customer may also choose self-return or arrange the return shipment by himself.
To be eligible for a replacement or return, the bike must be unused, free from dirt, dust, or any fragrances, and in the same packaging and condition that you received it. The mileage on the LCD screen must be less than 10 miles.
Note: if a customer decided to arrange the return shipment by himself and the request has been confirmed by RANDRIDE’s customer service team, it is the customer’s responsibility to ensure the safety of the shipping and the success of the return. The customer must choose the signature confirmation service for the shipment, and we highly recommend adding additional shipping insurance for the return package. RANDRIDE will not be responsible for any damage, loss, or other accident to the shipment arranged by the customer.
Non-returnable items include, but are not limited to:
2.ORDER CANCELLATION MODIFICATION
Before Shippment
Order Cancellation: If you cancel the order that was placed in 2 hours, the processing fee will not be charged. If you cancel orders that haven’t entered the shipping process yet, 10% of the order amount will be charged as the cost of electric bike assembly and packaging, ebike parts procurement and shipping costs.
Change of Shipping Address: No charge fee.
Exchanges I tem : No charge fee
After Shipping
Order Cancellation: If your order is shipped and cannot be modified, you may reject the package and 25% of the order amount will be charged as a reshipping fee and processing fee.
Change of Address: If you successfully change your address, 50 will be charged as a processing fee. If you fail to change your address, you may reject the package and 25 % of the order amount will be charged as a reshipping fee and processing fee.
Exchanges I tem : If you successfully exchange the item, 50 will be charged as a processing fee. If you fail to change, you may reject the package and 25 % of the order amount will be charged as a reshipping fee and processing fee.
1.Reshipping refers to the cost of reprocessing a returned parcel that has already been received and shipping it to a warehouse for storage, not the shipping fee caused by the return.
2.If it is not the return or exchange caused by the quality problem of ebike, buyer need to shall bear the shipping fee and shipping insurance costs caused by delivery and return. （The cost will be deducted from the order amount）
3. REFUNDS
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method.
W e will refund within 3 to 6 business days after receiving your returned items. After that, the refund time will depend on the payment method. You will receive a refund notification via email. If you have not received a refund, please check your bank account again first. Then contact your payment method company, it may take some time to officially release your refund.
Please see the details below:.PayPal refunds can take up to 48 hours to be processed and displayed in your accountGoogle Pay, Shop Pay, Apple Pay refunds will take 1-5 business days to complete the refundVisa, MasterCard or American Express Credit card refund takes 7-14 business days to appear in your account. This delay depends entirely on your credit card company and any intermediaries.
Please remember it can take some time for your bank or credit card company to process and post the refund too.
Return Shipping
To start a return, you can contact us at support@randridebikes.com / randridebikes@gmail.com. If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
To return your product, you should mail your product to our point address.
The shipping method can choose UPS, FedEx, DHL.
Return address: NO.68 HOI YUEN ROAD,KWUN TONG,KOWLOON,HONG KONG
Consignee name : Smith Contact phone number: 86 13553746564
You can always contact us for any return or refund question at support@randridebikes.com / randridebikes @gmail.com.
LG 48v ebike battery
The battery for your electric bike is typically worth about a third of the value of the entire bicycle, so it’s important to find a good quality one and take care of it.
In the case of Pedego Canada, we offer a 5 Year Prorated Battery Warranty with all our electric bikes, which is one of the best in the business. Why we’re so confident in our batteries is the quality of the cells within them. If you take nothing else away from this post, remember this: do not buy an electric bike with anything less than a five year battery warranty and do your best to purchase a battery by one of the “big three” name-brand cells: Samsung, Panasonic or LG. Cheap electric bicycles like the kind you find at Costco do not have the quality of manufacturing or warranty that will ensure you can enjoy the bike for years. It’s our recommendation that you spend a bit more money up front to save you from headaches (or worse – the garbage dump or even a fire!) later.
No matter what electric bike you buy nowadays, chances are it runs on a lithium-based battery. Believe it or not lithium batteries have been around since 1912 but it’s only been in the last 15 years that they caught on and became economical in consumer applications. There are “lithium-ion” batteries and “lithium polymer” (aka “lithium-ion polymer”) batteries and the difference between them is the type of electrolyte used. Other than that, there isn’t a significant variance: Li-Polymer allows for a slight increase in energy density but is 10-30% more expensive and so manufacturers have yet to decide upon one over the other.
There is also a range of lithium chemistries available in different batteries and manufacturers might claim some are more robust than others but the single most important factor affecting the life of a battery is how well it is looked after. You should typically expect a battery to last between 3 and 5 years if it is well maintained. (A lithium-ion battery will slowly lose its capacity over time, even if it’s not used.) Below are three things you can do to ensure you get the longest usage out of your electric bike battery.
#1. Keep The Battery Cool
Environmental conditions are an important factor affecting lithium-ion batteries. For example, leaving one in your car in the hot sun will guarantee you lessen the life of your battery. In fact, that would be the worst situation: keeping a fully charged battery at elevated temperatures. It’s a good rule of thumb to store your bike out of the direct sunlight for long periods and when not in use, keep your battery in a cool place, preferably below 20°C (68°F). The chart below, provided by Battery University, shows the impacts of temperature upon recoverable capacity of a battery.
#2. Store A Battery Partially Charged – But Not Too Low!
You’ll also notice in the above chart that storing a fully-charged battery has an impact on the recoverable capacity. Even more important, storing a fully depleted battery may be disastrous because, as we mentioned above, a lithium-ion battery will slowly discharge over time even when you’re not using it. If the voltage drops below a certain point this may cause irreparable cell damage, depending on the time it’s left sitting. Ideally, when storing the battery for a long period, ensure it has a charge between about 80% and 40% of a full charge. Some chargers have a lower ‘storage’ voltage setting, so just switch to this before charging it for storage. An easy alternative is to take the bike for a ride after you’ve charged it fully and before storing.
Also, don’t leave your battery on the charger for long periods of time, as storing it at or close to 100% will reduce the life of the battery. You can also check your battery every couple of months over winter. If you notice that the battery indicator has dropped too low, you can give it a quick charge to bring it back to the ideal storage voltage (this is unlikely to be needed if the battery was at 40% or above). If you don’t have a battery indicator, it’s probably a good idea to charge the battery for half an hour every few months. Again, try not to put the battery away fully charged (but it won’t be the end of the world if this happens.)
#3. Don’t Regularly Fully Discharge Your Battery
It’s amazing that we still see tech sites advising regular full discharge of your battery, even when this has been proven as detrimental. The chart below, again provided by Battery University, proves that regularly discharging lithium-ion batteries to 0% is harmful and partial discharges with regular top-ups are recommended to extend the recharge-cycle lifespan of the batteries. The occasional full discharge on that extra long ride is no problem! It’s ok to top up lithium-ion batteries regularly and, as the chart below shows, it’s best to operate them in the top half of their discharge cycle; lithium-ion batteries don’t have a ‘memory effect’ that some other battery chemistries have. If you are doing short rides on a regular basis, it is slightly better to charge it every few rides rather than every ride (to avoid long periods at or close to 100% charge, as discussed above).
As an extra note for the winter season, make sure your battery is above freezing before charging, otherwise you could harm the cells. It is no problem to ride the bike in below-freezing conditions (it doesn’t harm the battery), just make sure you let the battery warm up before charging. When you are riding in very cold weather, you will notice a drop in power and range; this is normal and expected. You can help avoid this by bringing the battery inside whenever you aren’t riding to keep the temperature of the battery up. That way you will get that extra bit of power!
Correct maintenance and storage of your battery as detailed above will significantly increase its lifespan. A well-maintained lithium-ion battery will last between three to five years, whereas a poorly maintained battery can be badly damaged over just one season or sooner. For more detailed, scientific information on batteries and how to care for them, check out the excellent online resource at Battery University, where the above charts came from.
Li-Ion Ebike Battery Charge Charts
Whats an 80% charge on a 48v battery? on a 36v? 52v? These charts give answers to questions like these on all common ebike battery voltages.
Remember, ALL numeric charts show ballpark values that may be numerically correct, but no generic chart can match your individual cell characteristics, your pack’s age or its chemistry. Bottom line: imperfect charts like this are still good baseline references. Use these and teach yourself how to read the voltage gauge on your display screen.
Quite some time ago, I produced a series of charge status charts for a variety of common lithium-ion battery voltages. They’ve become a fairly common link to help folks out on various groups who use these battery voltages in their ebikes.
I built them using Google Sheets, so they are not web pages, which I suppose has kept them from being widely linked in search engine results when people are looking at such things.
Here for the first time are direct links to the charts on a normal web page.
Volt (10S) Battery Charge Chart
The first link is to the lowest voltage: 36v. Generally this is the lowest voltage you will find on a modern, commercial ebike. Note that its called ’36 volt’ but really that is the ‘nominal’ value. A 36v battery is actually fully charged when it is at 42.0 volts.
Volt (13S) Battery Charge Chart
The next common size is 48v. These batteries are fully charged at 54.6 volts.
Volt (14S) Battery Charge Chart
The next battery voltage is 52v and very common. 52v batteries will work on systems designed for 48v, and why is easier to understand when you become aware that a ’48v’ battery really tops out at over 54 volts. A ’52v’ battery tops out at 58.8v, so it essentially lets you use a 48v system for a longer time at higher voltage levels that it is already designed to utilize.
Volt (16S) Battery Charge Chart
With a 100% charge voltage of 67.2 volts, when you have one of these you are getting into high voltage territory