How Many 18650 Cells for a 36V Battery?
A 36V 18650 pack uses a 10S configuration — 10 cells in series, 36V nominal and 42V fully charged. Add cells in parallel to reach your target capacity.
10S is the universal "36V" e-bike standard (36V nominal, 42V full).
| 18650 cell capacity | Configuration |
|---|---|
| 2500mAh (2.5Ah) | 10S |
| 3000mAh (3Ah) | 10S |
| 3500mAh (3.5Ah) | 10S |
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Open the Battery Pack Calculator →36V 18650 Pack FAQ
How many 18650 cells for a 36V battery?
A 36V 18650 pack uses a 10S configuration — 10 cells in series, 36V nominal and 42V fully charged. Add cells in parallel to reach your target capacity.
What series configuration is a 36V pack?
36V uses 10 cells in series (10S), giving 36V nominal and 42V fully charged. 10S is the universal "36V" e-bike standard (36V nominal, 42V full).
Can I use 21700 cells instead of 18650?
Yes. The series count stays the same (10S sets the voltage); 21700 cells hold more capacity each, so you need fewer in parallel to hit the same Ah.
Do I need a BMS for this pack?
Yes — use a 10S BMS matched to your peak current. Our BMS Picker finds one for your exact configuration.
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