This is the battery for the Chasing M2 underwater rover.
The Chasing M2 originally comes with a standard battery of 99Wh
You can choose a high capacity battery of 200Wh improves the dive times significantly.
Battery Charger for Splash Drone 3 Plus New High Voltage Battery (4S-LIHV)
The new 4S High-Voltage battery charger is specially designed for SplashDrone 3+ new High-Voltage battery (4S-LiHV) and the 2S remote battery. The new 4S High-Voltage battery charger is specially designed...