Charger for communication system compatible for BRP helmets that have an E-Linq connection. Compatible with most communicator, Cardo, Sena, etc. Not compatible with communicators that use the same port for charging as for headphones. The charger is installed between the E-Ling connection and the magnetic connector of the helmet. Accuracy: When powering your communications system, make sure your heat control is at maximum, then you can adjust your level.