https://www.batteryforpc.co.uk/winbook-battery-LT-BA-UN25-p822.htm
LT-BA-UN25 5880mAh Battery Replacement for WINBOOK V,V120, V220, V230, V240 ,J4 ,J4-G730 ,J4-G731...
Winbook LT-BA-UN25 5880mAh Replacement Battery for WINBOOK V,V120, V220, V230, V240 ,J4 ,J4-G730 ,J4-G731 ,J4 V ,P4 DDR 733, P4 DDR 736 serie - replacement...