RCG Racing DC 1/18 USB充電器 1A

The connector fits snugly on my RCG battery's JST SM-4P port, no wiggling or loose contact like my old charger. Plugged it into a laptop USB port and it topped up the 800mAh pack without getting warm, so it's become my go-to for quick top-offs between runs.

Charges my drift car battery in about 40 minutes, which is perfect for quick sessions. The JST SM-4P connector fits snugly, no fiddling around to get it plugged in.

Exactly the right plug for my 7.4V battery—the 1A output charges it noticeably faster than the stock charger that came with the car.