Most standard 7S lithium polymer battery packs feature two balance ports, a 4S and 3S balance lead (total 7S). This makes it difficult to charge with most standard battery chargers that only feature one balance port.
With this super useful adapter you can easily charge your 7S battery with any standard 8~10S capable balance charger that accepts JST-XH balance plugs. This adapter takes the 4S and 3S individual plugs from your pack, and combines them to one single 7S balance plug which is able to connect to most standard 8~10S capable chargers.
Input: 1 x 4S and 1 x 3S JST-XH balance plug
Output: 7S JST-XH balance plug