A battery develops voltage from the chemical reaction produced when two unlike materials (e.g. the positive and negative lead terminals) are immersed in electrolyte (a solution of sulphuric acid and water). Vehicle batteries are typically of lead-acid type, whose primarily function is to deliver a short burst of high power to start the engine.

Electricity flows from the battery as soon as there is a circuit between the positive and negative terminals, which happens when any connected part of the circuit (e.g. the engine starter or a vehicle electrical device) needs electricity. This would discharge the battery but when the vehicle is driven, an alternator flows charge into the battery to restore the current.

If a battery discharges significantly, its lead plates become more chemically alike, the acid becomes weaker, and voltage drops. Eventually it will no longer deliver electricity at a useful voltage.
Many electrical devices can operate on minimal voltage but sensitive electronics can be damaged if not operating at the correct voltage. And a vehicle’s starter will typically require significant charge (e.g. 12.1V) to successfully start the engine. This is why many motorists have been in the frustrating position of having left their lights on and then being stranded.

It can take as few as three instances of full drainage to completely diminish the battery’s capability to start the engine – meaning it is dead. It then has to be replaced early, incurring cost, and also impacting the environment.

Battery Brain prevents a dead battery by using patented technology to continually monitor a battery’s charge strength and isolate it from any possible energy drainage, ensuring enough charge is preserved to start the engine.

The Battery Brain unit can be mounted in various configurations on the positive terminal of the vehicle battery. It monitors the voltage in the battery and if this drops below the prescribed level needed to start the vehicle (e.g. 12.1V), a brief timed sequence measures whether this is a temporary drop that recovers quickly.

If not, Battery Brain disconnects the battery from the vehicle’s electrical system to preserve the charge. The battery will then typically recover (e.g. to around 12.6V) but it will at very least retain enough charge to start the engine.
Type I models then only need to be reactivated using a button on the unit under the hood to start the engine. Type II and Type III models are supplied with a remote which reactivates the unit easily to reconnect and start the engine.

Battery Brain’s patented technology comprises a unique conductor that operates in an oxygen-free environment and can tolerate high currents.

It measures temperature, current, voltage and voltage direction and using mathematical logarithms, disconnects the battery at a charge level sufficient to start the engine. It measures temperature, current, voltage and voltage direction and using mathematical logarithms, disconnects the battery at a charge level sufficient to start the engine