Lithium battery charging circuit board slices
Chip type......
36, 40 volts s10 10+15+20+30+35Am amperes
48v volts s13 .35Am
Price 10 riyals. 10Am and 15 Am amperes 36,40v volts
Price 15 riyals. 20Am and 30 and 35 Am amperes 40,36v volts
Price 20 riyals. 35Am amperes 48v
And there are lithium battery wire connectors
Connector price 3 riyals
.And there is manufacturing of lithium batteries for the required voltage