How to Test if Your eBike Battery is Out of Balance | DIY Volt Check

Is your eBike or eMTB battery not lasting as long as it used to? It might be out of balance. In this step-by-step video, we walk through how to test an 840Wh Dingfu E10 battery using a multimeter to check the voltage of each individual cell group. You’ll learn how battery imbalance happens, why it reduces your range, and how to tell if your battery needs balancing. This is essential viewing for Bosch Purion and Samsung 18650 35E users, or anyone who wants to dive deeper into electric mountain bike maintenance. Ideal for MTB and eMTB riders who want peak performance and longer rides.

🔧 If your eBike range is dropping even though the battery looks “fully charged,” you might have an imbalance issue. Use a multimeter and follow this guide to test each series group.
Have you checked your battery balance before? Drop your voltage spread in the comments!
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