Massa Charger for Xiaomi Yi battery — SB4004, mains and car charging for action camera battery

The Massa Charger for Xiaomi Yi battery — SB4004 is a compact dual-power charger made for charging removable Xiaomi Yi action camera batteries from both mains and a 12V car socket. Its design focuses on convenience for users who need quick battery top-ups at home, in a vehicle or while travelling. The charger accepts the compatible battery form factor used in Xiaomi Yi cameras and provides a straightforward charging solution without the need to plug the battery into the camera itself.

Advantages

This charger combines mains and car charging in a single, compact accessory that is easy to carry and store. It enables faster turnaround of spare batteries by allowing charging outside the camera, and its simple plug-and-connect operation reduces handling time. The device is intended to be compatible with standard removable batteries for Xiaomi Yi action cameras and is suitable for use in different environments thanks to its dual input capability.

Suitable for

• Travelers and outdoor photographers who need to recharge Xiaomi Yi camera batteries on the road
• Action camera users who keep spare batteries and require off-camera charging
• Car-based shoots where access to a 12V socket is available
• Home or studio use when charging multiple batteries without occupying the camera

Key specifications

• Power sources: mains AC input and 12V DC car input
• Designed for removable Xiaomi Yi action camera battery format
• Compact, lightweight housing for portability
• Simple battery insertion connector for single-bay charging
• Indicator lamp(s) to show charging status

How to use

Insert the compatible Xiaomi Yi battery into the charger connector ensuring correct polarity and seating. Connect the charger to a mains socket using the included AC cable or to a vehicle 12V socket using the car adapter. The charging indicator will show when the battery is charging and when the cycle is complete; disconnect the charger and remove the battery once charging is finished. Use on a stable, dry surface and avoid exposing the charger to extreme temperatures while charging.

Usage recommendations

Only use with batteries that match the Xiaomi Yi removable battery specification. Charge in a well-ventilated area and avoid leaving batteries unattended for extended periods. Allow batteries to cool before storing, and follow general battery safety practices to prolong battery life and safe operation.