12V auto reset circuit breakers. This automotive circuit breaker is auto reset, providing continued operation during an overcurrent condition in DC applications. Commonly referred to as a type 1 breaker.
The B3 Compact charger is a very simple to use charger for 7.4 2S and 11.1 3S battery packs. No need for additional power supplies or 12v batteries as this little unit has its own built in power supply that can be powered with 100-240v.