Charging batteries (1 Viewer)

Feb 22, 2023
56
17
Funster No
94,173
MH
Autotrail navajo
Hi we have a 2010 Autotrail frontier navajo.
Been in storage with a solar panel trickle charge in the vehicle battery. Leisure battery connected but everything switched off.
Got it out if storage started no problem.
So at home vehicle battery read 12.6 volts leisure battery read 13.8 volts, both batteries connected but nothing switched on. So started engine to check charge to batteries at vehicle battery 11.2 volts at leisure battery 14.6volts.
Does the charging system with the engine running charge the vehicle and leisure battery?
Or could someone please explain what should happen so I can check everything working OK.
 
Dec 24, 2014
9,318
48,096
Hurstpierpoint. Mid Sussex.
Funster No
34,553
MH
Compass Navigator
Exp
Ever since lighting was by Calor gas.
Your Profile doesn't give any indication of where you are (update it with at least your county) but on this sunny day in Sussex the 14.6 at the leisure battery is probably the input voltage to the battery from the the solar panel.
To check whether the engine charges both batteries note their voltage after an hour with no EHU and engine off ( at night or cover solar panels so no solar). Now start engine and check voltage reading at batteries. They should read higher than previously if being charged by the engine. It's more reliable to check voltages at the battery terminals with a multimeter rather than rely on the dial on your m/h anxiety panel.
 
Last edited:
Apr 6, 2019
3,814
7,563
Eye, Peterborough, UK
Funster No
59,702
MH
RV
Exp
FourWinds Windsport 6.8L V10
Difficult to measure with multiple inputs . Turn everything off and disconnect solar earth for 30 Minutes. Measure your batteries directly. Then start engine and measure again. Should be over 13 volts if charge being sent.
Some vans charge both, some only engine. Some are switchable.
 
Dec 2, 2019
3,641
7,862
Amersham
Funster No
67,145
MH
van conversion
Exp
Since 2019
It could be you split charge system taking power from starter to leisure battery.
 
Oct 14, 2007
4,034
6,357
Rochester
Funster No
619
MH
Auto-Trail Mohawk
Exp
17 fun filled years
I can change how my 2013 Auto trail Mohawk charges the leisure and cab batteries, using the menu on the panel.

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