Radio Battery, Product Type Radio Battery, Compatible Radio Type Handheld, Compatible Radio Brand Motorola, Compatible Radio Series AXU, Compatible Radio Manufacturer Model Number AU4100GYF9AA, AV5100GYF9AA, Compatible Radio Grainger Model Number 4NA29, 4NA30, Battery Capacity 1,500 mAh, Battery Type Nickel-Metal Hydride, Compatible Product Type Portable Two Way Radio, Waterproof No, Voltage 7.2 V, Maximum Recharge Time 13 hr