Most motorhomes have a split charging system of sorts. A common install is simple relay that joins the rear batteries to the front, as soon as the engine is started (normally on small gauge wire). This ensures charge is travelling to the batteries and is adequate for light use, but we expect more and more from our batteries these days. Did you know the more batteries you have on your vehicle the charge rate is split between the batteries? e.g two batteries receiving a 10 amp charge will be split 5 amps into each. The Sterling Battery to Battery Charger is a four stage charger. This means it can adjust the way it charges (much like a battery charger that plugs into the mains). Charging in this way will not only charge your batteries up to five times faster, but also condition them to help sustain long battery life. With a 50 Amp split charging system such as the Sterling Battery To Battery Charger you can ensure you batteries are receiving a good charge. Even with two batteries, it is possible to charge them at 22.5amps each, a much higher charge rate than your average mains battery charger.
We recommend this system to be fitted by someone who is competent in auto-electrics. Connections need to be made to both engine and leisure batteries, temp sensors fitted to leisure battery and alternator (to prevent overheating). With the correct installation a genuine 50 amp charge can be achieved to the batteries. (See Video) Fitted prices will vary depending on your vehicle (amount of time, cable and consumables required for the job will differ). An overall fitted cost would typically be between £500 - £600