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Long Term Storage of Lithium-Ion Batteries

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    Long Term Storage of Lithium-Ion Batteries

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    Long term storage of Lithium-ion cells

    For those who don't have the chance of having hot weather all year long to ride your bike....You need to store your bike for the winter. Here are 3 simple tips:
    • Don't store the pack fully charged!!! Store your pack at around 30-50% charge. What is 30-50% charge on a 36V/48V/52V....? Well it's about 3.3V-3.8V per cell so multiply this by the amount of cells you have on your pack (ex: 52V = 14s pack, 14x3.8V= 53.2V /////// and 48V = 13Sx3.8V= 49V//// and 36V is about 38V ). To test the voltage, wait an hour after use (or charge) before measuring with a proper DMM (digital multi meter)
    • Leave it in a dry place and unplugged from the bike and charger of course.
    • Keep the temperature near or below freezing, we recommend anything bellow 50 degrees F (10deg Celsius) but over -4F (-20C). If you can't then keep it in the coolest spot (the beer fridge in your garage is perfect).
    • VERY important: Unplug your battery from the controller and the charger even if not plugged to the wall outlet.

    I would even go so far as to encourage anyone with an ebike to put their battery onto a smart-charger once a month to a 50% charge to ensure it doesn't get low. Or at a minimum check your voltage to be sure it's still over 20%... if it's low, just bring slowly the temperature over 50F (10C) and charge it a little ...

    When using the pack again, you will need to put it through the same sort of break-in you would do on a new pack: several cycles where you charge it to 100% so it can do balancing.

    To know more I recommend reading this great article : How to make your lithium battery last
    Last edited by Sebz; 02-12-2018, 06:45 PM.