Why buy a battery box when you can make your own..? Low profile for 4x220Ah cells.(pic)
Question please..
I'm top balancing the cells. When delivered cell currents were very different (grade B), after 10 hours at 10 Amps currents had equalised. Realised charging was inefficent and prolonged so connected as 4S with BMS and charged to 90% (cell voltages within 2mV)
I'm balancing again, has taken 6 hours to get from 3.48 to 3.50 Volts, individual cell currents are now: 2.8,2.20,2,6,2,8 Amps, slowly dropping.
Should I just let current taper to zero at 3.5 Volts, which must be very close to 100% charge or as webby instructions suggest go for 3.6 Volts? Apart from the risk of damage it's going to take time...
Having fun..