Hello
I would like to suggest you to try free Android application: Battery Package Calculator.
Quickly & easy calculates the basic parameters
- voltage
- capacity
- energy
- maximum continuous discharge current
- weight
- price (if you provide the price of the battery cell)
of the battery packs (up to 9999s 9999p).
Built-in Database of 37 popular battery cells (mainly 18650)
- you can modify & add your own.
formatting link
Plus: rough estimation of battery operating time.
Best Regards