LiPo 7.4V 400mAh w. JST-Plug

WL Toys K989-60 - LiPo Battery 7.4V 400mAh JST Plug, compact 2S RC battery for micro models

This is a 7.4V 400mAh LiPo battery with JST connector, designed for small RC models such as mini cars, airplanes and helicopters where low weight and compact size are essential.

The pack uses a 2S LiPo configuration (two cells in series), delivering a nominal voltage of 7.4V and a capacity of 400mAh. It typically provides a runtime of around 5–10 minutes depending on model, load and driving style.

LiPo technology offers high discharge capability relative to size, making it ideal for small but high-performance RC models. The JST connector (often JST-PH / 2-pin depending on version) is commonly used in micro RC systems for simple plug-and-play installation.

It should be charged using a compatible 2S LiPo charger (7.4V with balance charging) and handled according to standard LiPo safety practices.