Here are two of the lipos that I use, the 2 cell ( long one ) was been used on my TJ F-16 for the ECU JetCat and the 3 cell on my small electric, if you noticed they have two diferent connectors, then on the other pic you can see three types of connectors.

The standar connectors around here are the Multiplex connector, if my batt. is dead it will be easy to use someone ealses batts. because we use the same connectors and charging, most chargers now day can charge anything. I use a mini balacer I got from the hobby shop since I don't do a ton of Lipos I ddin't see the need for heavy equipment.

I hope this helps.