Amazon.com: Retevis Ailunce HD2 Ham Radio, HD1 New Version, DMR Amazon.com: hflexgrad (2 Pack) 7.4V 3000mAh Li ion Battery Replacement Amazon.com: Retevis Ailunce HD2 Ham Radio, HD1 New Version, DMR RETEVIS C1, 1800ma, 7.4v, Original Rechargeable Li ion. Increase the performance of your Ailunce HD1 or HD2 radio with the Retevis BL01 battery pack. Featuring a 3200mAh capacity and Type C charging port, this Li ion battery provides reliable and efficient power for uninterrupted amateur ham radio operation. Lightweight and durable, its the perfect upgrade to keep you connected on all your adventures. Features: Upgrade Ailunce HD1 HD2 Type C Battery Pack Charging Input: 5V 1A Battery Type: Li ion Battery Capacity: 3200mAh 23. 68Wh Color: Black Lightweight and Durable Specifications: Battery Capacity: 3200mAh 23. 68Wh Voltage: 7. 4V Charging Input: 5V 1A Battery Type: Li ion Color: Black Weight: 140g Whats in the Box: Retevis BL01 3200mAh Li Ion Battery