1.5S1P 20V 2Ah lithium ion max battery is designed for 250W electric trimmer.
The nominal voltage should be 5*3.6V=18V.
This battery use samsung 2000mah cell.max continuous discharge rate is 20A.
Ideally battery working time at full power for reference:
Working Time =40Wh(20V*2Ah)/150W = 0.27h
Battery show case:
TLH battery factory also offer hardware and plastic molding service,as well as 3D drawing service.