barrywi
Free Member
- Sep 25, 2012
- 120
- 28
- Funster No
- 23,021
- MH
- C class
- Exp
- I am a Newbie to motorhomes but have caravaned for years
Time for overwintering so all water drained etc but I get conflicting advice about leaving the mains connected. My van has two leisure batteries (gel type)and a vehicle battery of course. The 12 volt control box and charger charges all of these on my van so does it harm the batteries to leave the van on charge?
I read that caravan / motorhome chargers never charge above 13.8 volts so do not fully charge the batteries to prevent overcharging. A proper battery charger charges at a higher voltage than this to give a full charge but this is not suitable for leaving on all the time unless it is like the CTEK smart charger I keep connected to my little used Jaguar which has a battery drain all the time.This charger intelligently drops the volts when the battery if full.
The alarm on the van would eventually flatten the battery I presume , so any clues as to what to do? The van is under a large car port so I cannot just rely on the roof solar panel.
I read that caravan / motorhome chargers never charge above 13.8 volts so do not fully charge the batteries to prevent overcharging. A proper battery charger charges at a higher voltage than this to give a full charge but this is not suitable for leaving on all the time unless it is like the CTEK smart charger I keep connected to my little used Jaguar which has a battery drain all the time.This charger intelligently drops the volts when the battery if full.
The alarm on the van would eventually flatten the battery I presume , so any clues as to what to do? The van is under a large car port so I cannot just rely on the roof solar panel.