Trickle charge

weedkiller replied on 03/12/2021 09:30

Posted on 03/12/2021 09:30

I would like to trickle charge my van battery while it is in situ in the external van battery box. Can this be done by plugging a trickle charger into the onboard cigar lighter socket ?    Can anyone please suggest a method if this wont work.  

SeasideBill replied on 04/12/2021 11:24

Posted on 04/12/2021 10:45 by Amesford

This may be of some interest to you.

https://www.youtube.com/watch?v=O3EKM9Jaav0

Posted on 04/12/2021 11:24

Good video, covers the 8 stages employed by smart charger and direct connection to battery so it can be isolated during charging. 

hitchglitch replied on 04/12/2021 19:34

Posted on 03/12/2021 19:46 by SeasideBill

On board charging systems are generally not very sophisticated and are not best suited to long-term trickle charging. I’m not sure what fits the description of a ‘cheap trickle charger’ as the posts above describe ‘intelligent’ or ‘smart’ battery chargers aka ‘battery conditioners’. Theses are specifically designed to be connected to a battery on a long-term or indefinite basis without overcharging it. They employ a number of variable functions to charge and maintain the battery in optimum condition. I’ve used them on classic cars in the past while in long-term storage. My record is a Halfords battery that was 14 years old and still going strong when I sold the car.

Posted on 04/12/2021 19:34

A “cheap” trickle charger is one like I saw at Halfords a while back which in the small print stated that it was not suitable for permanent connection over prolonged periods. You get what you pay for I guess.

weedkiller replied on 15/12/2021 20:41

Posted on 15/12/2021 20:41

Thank you all for your replies 

My 12v socket is only live with the caravan master switch on 

ideally I would like to be able to connect a trickle charger without disconnecting the battery from the caravan , so that I can use internal lights .   I would switch off the onboard charger at the 240v isolator when using the trickle charger and disconnect power to the trickle charger before using on board services.   I dont want to take the battery out of its locker to charge it and then put it back due to a wacky  Knee.

I did try using the onboard charger but I think over time it could fry the battery I have recently changed the battery so dont want to damage it or the onboard systems.

I asked Ctek for their views but did not get a reply. 

any experts out there who can tell me if I will damage the onboard charger ?? 

JohnM20 replied on 16/12/2021 08:35

Posted on 16/12/2021 08:35

For several years I have given my battery two hours charge each day using a timer on my hook-up cable and using the built in charger. This maintains the battery state as 'Good' on the panel in the caravan. So far (tempting fate) this has worked fine with a good battery report also from my service engineer each year. The battery is approaching 7 years old. I realise this is only any good for people with continual access to power.

near Malvern Hills Club Campsite Member photo by Andrew Cole

Book a late escape

There's still availability at many popular UK Club campsites - find your perfect pitch today for a last minute trip!

Book now
Woman sitting in camping chair by Wastwater in the Lake District with her two dogs and picnic blanket

Follow us on Facebook

Follow the Caravan and Motorhome Club via our official Facebook page for latest news, holiday ideas, events, activities and special offers.

Photo of Wast Water, Lake District by Sue Peace
Visit Facebook