40135 Assemble the battery pack
Good High Temperature Performace 12V 20AH Lithium Ion Battery Pack 40135 4S1P For Hazardous Area. 1. Just series,no parallel 2. The cell Pass UL1642,IEC 60079-0 3 . Application for Hazardous Area, such Oil And Gas, And Pharmasutricals 4. Flame retard