Users can select the following specifications through the back button:
12V lead-acid 24V lead-acid
24V lead-acid 48V lead-acid
A cell lithium 3.7V (Only for a single cell lithium)
2 cell lithium 7.4V 3 cell lithium 12V
4 cell lithium 15V 5 cell lithium 18V
6 cell lithium 22V 7 cell lithium 24V
8 cell lithium 28V 9 cell lithium 33V
10 cell lithium 36V 11 cell lithium 40V
12 cell lithium 44V 13 cell lithium 48V
14 cell lithium 52V 15 cell lithium 58V