Mfr: Sure Electronics Series: BCPB Package: Bulk Product Status: Active Type: Open Frame Battery Chemistry: Lithium-Ion Number of Cells: 5 Voltage - Nominal: 21V Charge Current - Max: 920mA Charge Time: 4 Hrs Voltage - Input: 5 ~ 24V Power - Max: 210W Size / Dimension: 6.00\ L x 4.50\ W x 0.85\ H (152.45mm x 114.30mm x 21.50mm)