| 3.6V rechargeable lithium?ion battery Compatible with Axion XQ38, Axion LRF XQ38, Proton FXQ, and Proton XQ Includes charging station with battery status indicator Designed for extended runtime across supported Pulsar devices | Lightweight at 2.8 oz; compact 3.6 × 1 × 1 in size Battery capacity: 4900 mAh Includes required battery for operation |