3rd batt in hilux

Hi Damien,

As far as I can see you should have no problem in charging both auxiliary batteries from the 240 volt charger powered by the generator, as they are linked together. In parallel I assume.

If an isolator is included in the "dual" battery system, everything will work to keep all batteries charged by the alternator, or separately the two auxiliary batteries by the 240 volt charger.
While travelling, the alternator will first charge the starting battery until it has reached a sufficient voltage level, then the isolator will connect the two auxiliary batteries into the charging circuit.
This is how all "smart" dual battery systems work, firstly to ensure the starting battery is given priority and secondly to keep it separate from high current drain from the auxiliary circuits. (fridges, etc.)


Bill.

Damien,

yes, you can charge any number of batteries by alternator (well at least three ;)
And yes again, you can use your gennie/charger combo for recharging the two deep cycle batteries.

If your two Engels will consume 3 amps time averaged, then that's a daily charge of 72 Ah which needs to be replaced.
If you're planning on getting a 25A quality charger, you'll have to run your gennie a minimum of 4 hours every day while camped.

Best regards, Peter

Thanks men, I thought it would be OK but just needed to be sure.
Damien

Damian,

I run three Batteries in the Patrol with the 3rd mounted in the area immediately behind the front passengers seat. Just make sure that if the aux batteries are distant from each other, or are together a distance from the power source (dual battery system or isolator), use the biggest cable you can find to run the power down to them or they will never get peak charging from the altenator.

Cheers Mick

I run 3 batteries in my hilux with no issues.
Starter n70, 2nd is a n55 under bonnet, and the 3rd is an agm 120ah in the tub on a cradle over the wheel arch. Use a standard 100a solenoid on the starter to the 2nd, and a redarc for the 3rd, which can be turned off manually as well.
works a treat.

Trains