for my Cyclone trike, I've put a pack together:
4 x 3 (yes,three)-cell 5Ah lipo for 11.1 volts nominal at 20 Ah in series with another identical pack.
Is this better than using 2 in series (22.2 volts nominal at 5Ah) in parallel with 3 more identical packs?
My reason for this is to get a dirt-cheap 'graceful fail' mode for my trike.
Or does anyone have better ideas?