Modern eBike batteries use Lithium Iron Phosphate chemistry with multiple cells arranged together in a grid to provide the correct voltage, current and capacity. Share it with us! However, sometimes you will run into e-bike battery problems. An e-bike controller takes input signals from the controls and sensors, this signal is analyzed and then the controller decides how to best transfer the energy coming from your battery to the motor. To reset the battery management system, do the following: Remove the battery from the battery mount; Press and hold the On/Off button on the battery for 10 seconds; The battery management system should now be reset. E-bike Battery Charging Tips, Best Folding Electric Bike under $1000 Review Guide, E Bike Battery Problems & their Solutions, Top 5 Best Electric Bike Conversion Kit Reviews Guide 2021, Top 5 Best Electric Bike Batteries in 2020 Review Guide, Best Cheap Electric Bikes in 2020 Review Guide, Benefits of Electric Bikes – Reasons Why You Should Own an Ebike, Best Electric Bike for Women Review Guide 2020, 10 Effective Tips for Improving Electric Bikes Range, Bike Cleaning Tips – Guide on How to Clean A Bike, Best Electric Bike under $2000 in 2021 – Reviews & FAQs, Cycling Tips for Beginners – How to Start Cycling, E Bike Battery Problems and their Solutions, The e bike battery has discharging issues. My BMS seems the reverse of this. Panasonic 48V 20Ah Battery … Also included is a schematic of the BMS circuit. If you have all the equipment and electric knowledge, then you can fix it yourself. C hotter on a 5A 'quick' charger than it does on a 2.5A 'standard' charger.) AU $20.00 postage. In winter it’s recommended to remove the battery from your e-bike and store it in a cool, dry place – Li-Ion batteries don't like being left out in the cold and wet. Say for example the battery gets very cold or you leave it in the shed for an extended amount of time, it can benefit from a full conditioning cycle. Leaving it discharged is likely to shorten its life. Now first check if your charging life cycle is complete or not. Electric bike batteries can have problems that fit into one of two camps. The more wear and tear the internal electrodes of the batter see, the faster the battery will fail. Thank you _so_ much for the perfectly timed post! Supposedly at 40%charge they will sit on a shelf unharmed for at least 5 years.If you have discharged the cells too far and then left them sitting what else would you expect . Now I have a new problem. Here's what the pack looks … I hope this guide helped you with ebike battery problems, so next time, you should remember all tips mentioned above. When transporting an eBike it is important to remove the battery from the bike and store it safely in the car. Did you make this project? Electric Bikes Lounge believes in unbiased and honest reviews to help readers and consumers make the right purchase. (should be between 2.5-3.4 VDC per cell depending on charge. You should also try and keep it charged at around 70% to guarantee a long life to your … Re-install the battery and turn on the bike. Charging slowly places less stress on the battery. therefore my charger and controller will niether recognize the battery, though I have some 52v at the discharge and charging ports. (The internal electrodes of the battery wear more quickly when more chemically active. He is 75 years old and rarely takes it out of eco mode, has never used turbo and only used sport 1% of the time. My BMS is external to the main pack, so isolating it from the cells is easy enough without breaching the wrapper on the pack. They don't leak off their charge or go dead over time. Panasonic Motor - Zilver - 8.8Ah Gazelle Accu Innergy Li-ion - Zilver - 36V x 9A = 324Wh Accu E-Motion T-2 10Ah Li-ion Frame Sparta/Batavus/Koga Sparta/Batavus/Koga E-Bike Accu B-300 Series Bosch Accu Active 300Wh Plantium vanaf 2014 Sparta Accu Fold-E Type 24V 6.75Ah Batavus/Sparta/Koga Accu ION-300 Batavus/Sparta/Koga E-300 V2.0 E-Bike … I do recommend having a qualified mechanic do the troubleshooting and repair. This instructable is to help troubleshoot a malfunctioning LiFePO4 (Lithium Iron Phosphate) eBike battery. I'm working on a 13s 48v ebike battery and have had to replace a bank of cells using your method of fault finding. 1 year ago. So if you have a dead battery, it won’t start your e-bike. I've seen that trick but prefer something like this - http://www.hobbyking.com/hobbyking/store/__64456__... You can just set it for 'LiFe' on a slow charge rate and connect the main out (red, black) to JUST the cell you want to charge (via the balance connector on the battery) and it'll charge it as a 1S. (As opposed to the 16 analog charge circuits that are all ganged-together on most ebike BMS boards.). Your email address will not be published. Even batteries are waterproof, but still, you should keep your batteries away from water. If you have a dead battery, there is still hope that you can revive it. Now I have problems with the battery. A friend of is on his fourth Bosch motor with the same problems, he rides hard at bike parks but it is a £5000 bike designed for it. and doesn't vacillate back to red to balance. It depends on the power of the battery (typically 24, 36 or 48V), the power of the bike (limited in the UK to 250W), the bike’s battery management system, and the way you ride. Other common e-bike battery problems are that it dies too quickly after using for little time, even if you charge your battery to 100%, but it won’t last for long. In order to avoid theft, do not leave your battery connected to your electric bike. Lifepo4 cells absolutely will go dead over time and I know because I have a dead battery in front of me right now that was in storage for a few years. 8 lights lit up green the other 2 are not. Battery life: The most important expense that the owner might … The main reason for the battery not lasting for a long time is that your battery is old, and its charging life cycle is complete. As long as you keep the current under 1C it will not harm the cells and you carefully watch the rising voltage. A new battery will cost you around 500 to 600 dollars, and you can purchase a new battery from an online store like Amazon, or you can buy from local retail stores easily. If I do continuity test between C- and B+ I have continuity there, which indicates a dead short of some sort. Delighted to accept advice on alternatives. Bike Europe, a publication claimed to be the “leading trade journal for the bicycle, e-bike market” recently published a courageous story on the dangers of Lithium-Ion batteries used in the majority of electric bikes (e-bikes). The ideal charging level for a battery is between 30% and 60%. Another issue is that once it is fully charged charger stays green. Measuring from the negative terminal of the first group to the positive terminal of the 10th group gives 41.5 volts. Check PeriodicallyWhen storing you should check the battery every couple months. 2 rows of 4P show 0.20 V while the rest of the 8 rows is fully charged.So, where should I connect the + and the - of the chatger just to test the BMS?A new one is on its way to me.Do you think I MUST replace the 2 rows of 4P batteries or I may give a try with them?Tx in advance for your advice.Michael, 2 years ago If your dead battery is revived, then it is right for you because it is a better option than buying a new one; a new battery will cost you around 600 dollars, which is a considerable amount. (My own eBike BMS runs 20 deg. One full battery charge is equal to one cycle, and if your battery has 600 life cycle and you have already charged you battery fully 600 times then your charging life cycle is complete, so you should buy a new battery. after charging all night it's still dead/empty) Discharging Problems The chargers included in these kits are compatible with the battery. modern battery management systems monitor internal cell voltages so that battery pack doesn't become unbalanced and catch on fire. Total charges since new is 15. In addition to the cells there will also be a BMS (Battery Management System) board inside the battery. So ride your bike regularly and recharge it regularly. These batteries are commonly sold online through various sellers. Especially in a crowded city, where space is at a premium, having a small e-bike as your main mode of transportation is preferable to just about any alternative. If anything, I think lifepo4 will leak it's current out faster than a lithium cobalt due to its porous molecular structure. on Step 4. Cheers! [My experience: I used my e-bike for 7+ years over >21,000 km and had had no problems with the motor during that period.] (i.e. The video above gives a look inside an ebike battery and describes the basic procedure used to troubleshoot a battery that is cutting out or failing to charge. The line coming from charging circuit #5 to R36 powers the quad NAND gate IC on the back of the BMS.) Battery Problems are generally of 2 types-, This is when the battery either won't charge or won't hold a charge. I had found comment on an e-bike site that said that 50mA could be used to tickle a cell back into line, so was considering using a 5v PSU with a 100 ohms high-power resistor in series to limit the current. And 100% charged. Get the best deals on E-Bike Batteries. ;-), Reply One major concern is news that Specialized will not continue manufacturing batteries for the Turbo S series (691Wh). Last updated on September 19th, 2020 at 08:28 am. Discharging issues. (Hobby/RC chargers sold by sites like Hobby King have LiFePO4 settings and work nicely for manually balancing cells in battery packs). Mostly, e-bike owners put their battery in a car garage, but the garage’s temperature is warmer, so it is better to keep it under a shed. It is always better to keep your battery safe, so you don’t get any problem in the future, so below, I will tell you a few tips to protect your battery from harm. You will have to remove the battery pack from the power lines that connect it to the bike itself. The publication had a fire safety engineer and battery safety professional examine the aftermath … Question Does not need to appear for cell to be charged. If you are having any battery problems, then you have come to the right place because, in this guide, we will mention all potential e bike battery problems and their solutions, so if you face any problem, you can fix it. Save my name, email, and website in this browser for the next time I comment. If the e-bike battery problem is still there, then you have a loose connection, so make sure the connection is complete while charging. Another one of the so many e bike battery problems is that it starts discharging without even you are not using your bike and all the battery is drained without using it. Some smart batteries will brick the entire battery … If the battery has been charged for below 8 hours, try charging your battery for 8 hours and then see if the electric bike runs at full speed. The most common reason for the charging problem is BMS because its primary function is charge and discharge, so you should always check whether your BMS is working fine or not. Are you facing e bike battery problems like the battery won’t charge, or the battery dies quickly? But let's take a look inside to see what we're really getting in to. Most e-bike controller will have these wires motor, battery, brakes, throttle/ accelerator or PAS Pedal Assist System (some controllers have both types of wires, some have one of them). Question So a 16S4P battery will have 64 cells total (16x4). Riding voltage is around 45, but I'm not sure the pack is disconnected from. Check out our ebike battery kits. Some more wires are found in the advanced controllers, such as Display or speedometer, Three speeds, Reverse, LED light, etc. As an amazon associate we earn affiliate commissions from qualifying purchases. The battery is like the gas tank in your car. Hi, I have watched your video several times and have found it very informative. Your email address will not be published. My Specialized App says 100% health. Sometimes battery won’t work because it is dead, and a dead battery is the worst nightmare for electric bike owners; there are many reasons for a dead battery, it might be damaged due to overcharging or might be dead using the wrong charger. Probing w/ multimeter is reverse. We believe customers need to know everything before buying any product. I have seen many people saying that they have fixed their dead battery because sometimes the reason for a dead battery is small and fixable like it has some circuit problem or sometimes one cell is not working. Anything under 2.0 or over 3.65 VDC per cell indicates, (if still faulting) Bypass Discharge protection and test under load (see video). I am detecting voltage between the B- and C- and also between P- and B- of around 1.3v, so I have retested the balance terminals, all have tested fine. If possible, when not in use store your e-bike indoors or under-cover as well. Fixing a discharging issue is easy; all you have to do is to replace your old BMS with a new one and your problem will be fixed. But Storing a 100% full battery causes internal battery wear also. 2. While LiFePO4 cells do not leak or lose charge, the BMS usually steals some . Bosch battery keys to remove the battery from a bike if attached; Step-by-step guide. How to Charge Electric Bike Battery? Do you have any suggestions for what to try next? 1: Charge a New Electric Bike Battery for 12 Hours When you first get a new electric bike take the time to charge it’s battery completely for up to 12 hours. If you are not cycling your e-bike for a long time, it is recommended to remove the battery from an electric bike and put in indoor and charge it once a month for maintenance. Amazon, the amazon logo, amazonsupply, and the amazonsupply logo are trademarks of amazon.com, inc. Or its affiliates. Most E-bike batteries come in either 36 or 48 Volts and are between 8 and … It has about 9 years but has less 100 half cycles maybe 20 full cycles. E-bike Battery…, Bike Cleaning Tips - Guide on How to Clean A Bike, Top 3 Best Electric Mountain Bike under $1000 Reviews, Best Electric Bike under $2000 in 2021 - Reviews & FAQs. This board monitors the cell voltages inside the battery and ensures that no individual cell voltage charges to above 3.65V or discharges below 2.0V where they would be damaged. This is indicative of an imbalanced or damaged battery and can be caused by damaged cells or by a broken balance circuit on the BMS not charging all of the series cells equally. on Step 4, good tutorial. lithium-ion battery e-bike battery lithium battery 1 year ago, I bought a 5V power supply 2Amps for a LED strip lighting .When my cells are not quite balanced I attach it to the cell that is down and charge it up. There are a number of things that you can do that can really change how far you can go on a single charge.First is to pedal when you are … Though they often differ in size, voltage, capacity and cell type, they are electrically similar and the troubleshooting techniques below should hold fast for any multi-cell LiFePO4 battery pack with internal BMS(Battery Management System). On a high power electric bike this is another one of those nightmare scenarios that can cause a … top 5 best electric bike batteries in 2020. Thomas Raica: The charging time depends on the battery… 2 years ago, This is the BMS of a 10S4P batt pack.Where should I connect the + and the - 42V? I have a 10s4p Li-ion battery pack that is faulty. To do this run the battery completely flat and charge it right … Lithium Iron Phosphate (AKA - LiFePO4) is increasingly being used for electric vehicles (and as a replacement for Lead-Acid batteries in general) due to it's long lifespan ( >1000 charge cycles), light weight, flat discharge curve and awesome chemical stability. Free delivery and returns on eBay Plus items for Plus members. We've seen more than our fair share of ebike issues come and go over the years - from shot ball bearings, seized freewheels and stripped threads to defective hall sensors, blown mosfets and connector … In today’s installment of the 3 Minute Electric Bike Video Series where we are demystifying electric bikes we will be talking about how to increase the range of your e-bike’s battery. Batteries packs are described by the number of cells they have in series (S) and in parallel (P). If not riding the bike for weeks/months at a time, these steps are recommended: 1. ;-), BTW- While I wouldn't pull the battery apart over a 0.2V differential, if you have easy access to the balance connector I would try disconnecting it from the BMS and connecting a 1S LiFePO4 charger to the low cell only to manually. Given the huge and yet delicate role the controller plays, any technical hitch might throw everything out of balance, including power … I probe the points in the plug insert w/ negative probe and red probe on red of bms board. However, motors are replaceable. You want to keep it in good shape, so here are five electric bike charging tips meant to help your e-bike battery live a long life. LiFePO4 batteries are far less prone to the fire/shorting issues that Lithium Ion batteries are now famous for. Electric Bike Battery dies too quickly. You won't know without opening it and checking it out with a meter. These steps will help you determine if you problem lies in your BMS, your cells or your eBike motor and will hopefully help someone rescue their broken battery without having to spend an arm and a leg... For your LiFePO4 battery to have a long and happy life-. Was: AU $219.95. This is a work in progress and I'm going to keep adding info so feel free to post any questions and I'll answer them if I can. Charging a LiFe (~3.5V) to Lipo(4.2V) voltage will kill it. It's pretty sleek and slender to blend in well with the frame to give it a slightly more covert look than some of the other bulky batteries out there. To this end never leave your bike battery discharged for long periods of time. Battery pack voltage is the sum of single cell battery voltage (about 3.33V-3.35V charged) times the number of cells in series. The fault could be something simple like a badly soldered wire. If your electric bike is experiencing motor hub problems then read our post. Battery pack amperage is the sum of the individual cell amperage times the number of cells in parallel. LiFePO4 cells also hold their charge indefinitely. That is one of the big advantages of buying your E-bike from a local dealer. Check Video below for … Thanks for that. It also balances the cells during charging (ensures each cell receives the same charge) and disconnects the battery from it's load if short-circuit or over-current conditions are detected. If your BMS is dead, then it won’t charge your electric bike battery, and sometimes you have a loose connection when you attached your battery to a charger, and loose connection will hinder the flow of current and battery will not charge properly. There is also continuity between each pin of the balance connector and the corresponding cell group. The best way to look after the battery on your electric bike is to use it regularly. The BMS is unlikely to be faulty. E-bikers like to refer to wide open throttle as WOT (pretty dorky unless you are riding a super fast electric bike) But whatever you want to call it, it really sucks when your throttle gets stuck in this potion unexpectedly. I don't have a 1S charger. Shop with Afterpay on eligible items. Measuring between each of heavy wires on the BMS gives 0 volts. You can easily buy new BMS from a retail store. 1 year ago Anyone who messes with RC vehicles or multirotors/UAVs is used to balance chargers and how they work. But eBike battery vendors should provide better documentation. As Specialized has put all smartness into the battery (and it is a sealed box) it is not obvious that it can be rebuilt by a 3rd party, essentially rendering a completely useless bike once the original battery … Tke the BMS off and try running your gear off the battery direct for a short time to confirm the cells are OK . This battery was not abused. I'd buzzed out the affected cell and it was 0.2v below the other ones. 4 years ago, Glad it helped. One of the things about meshing complex electrical and mechanical systems together is that occasionally things can go wrong! Yet when I measure the voltage of the pack (BMS P- terminal to group 10 positive terminal I get 20.5 volts instead of the 41.5 volts I expect. Read the following electric bike problems and their ultimate solutions: The most common problem in an electric bike battery is that it won’t charge even if you connected the charger correctly. Store the battery at a median voltage instead of fully charged. It’s usually lack of use that causes problems further down the line. Shop today! balance it. or Best Offer. insightful. My Battery is similar, the first 5 cells power the BMS circuitry so since they are always trickling those cell's LEDs almost never come on. Our team of experts work very hard to research products and write down each any every feature in depth. So theoretically over long term storage those cells can imbalance... (You can see this in the included schematic. 25 miles each ride. Keep reading for a list of the most common problems to effect an e-bike battery and how you can fix them. Batteries charged slowly balance better too. If the battery seems to be deteriorating, the capacity can be checked by a good dedicated eBike shop. There are many reasons why battery won’t charge; some of them are that your charger is damaged or you are not using original charger, sometimes your bike battery management system (BMS) is not working.