JMB Additions offer a unique specialist motor caravan alarm installation service.

Many motor caravans are left for long periods especially in the winter months. During this time when the motor home is not in use, the drain on the battery from the installed equipment (clock, memory for the digital radio, flashing security lights and security systems) can be fatal for a vehicle battery.

Many people simply do not know that if a conventional battery is left to go flat, it will never be the same again and, in most cases, should be replaced.

Although none of the items mentioned above draw very much current it is, however small, significant over a period of time. Add to this the fact that a lead acid battery (conventional type) will naturally lose power when left.

It is also fair to assume in this day and age that when you buy a sophisticated motor caravan that has a built-in charging system for the leisure battery, this will also take care of the engine battery. However, the sad fact is that most converters do not make any provision for this.

The main reason that the charging system in the motor home is not wired to charge the engine battery is the serious risk of damaging the electrical components in the engine. This is why it is common knowledge that you must disconnect the engine battery terminals before attempting to charge the battery. Battery Master completely eliminates this problem electronically taking excess current from the leisure battery filtering out anything nasty and regulating the charging current to an acceptable 1.1amp.

Battery Master (installed price)