XL Battery for R1 Handheld Radio offers extended talk time, making it beneficial as a backup or for situations demanding prolonged battery life. This high-capacity XL battery, suitable for Rugged Radios R1, includes a built-in charging port, enabling on-the-go charging through your R1 USB charging cable. With a capacity of 3600 mAh and a voltage of 7.4V, this lithium-ion battery charges via either cable or cradle. The pack contains a high-capacity battery and a belt clip. A USB charging cable, originally provided with each R1 radio, can be purchased separately.