DIY lithium battery plugs, wire to wire or common wire optional.
Suitable for high current charging.
General lithium battery DIY number of wire to voltage is:
2S-3 line: 7.4V
3S-4 line: 11.1V
4S-5 line: 14.8V
5S-6 line: 18.5V
6S-7 line: 22.2V