Radio Battery, Product Type Radio Battery, Compatible Radio Type Handheld, Compatible Radio Brand Motorola, Compatible Radio Series RM, Compatible Radio Manufacturer Model Number RMM2050, RMU2040, RMU2043, RMU2080, RMU2080D, RMV2080, Compatible Radio Grainger Model Number 29WJ53, 29WJ54, 29WJ55, 29WJ56, 29WJ57, Battery Capacity 2,100 mAh, Battery Type Lithium Ion, Compatible Product Type Portable Two Way Radio, Waterproof No, Voltage 3.7 V, Maximum Recharge Time 4 hr