For CHCNAV HCE300 Data Controller
3.7V 6500mAh/24Wh
For CHCNAV RTK GPS M1 T1 X1 B5 Surveying
7.4V 7000mAh/51.8Wh
For CHCNAV CHC X91GPS battery model RTK
7.4V 3500mAh/25.9Wh