High capacity 3800mAh battery for Rugged Radios RH-5R and RH-3R handheld radios provides double the battery life of the standard battery. It's the perfect compliment to your RH-5R as a spare; backup; or race events where extended battery life is critical. The BAT-RH5R is a rechargeable Li-Ion battery pack. Click for RH-5R Radio.