Flat Camper Trailer Battery How To Recharge ?

Have you run a voltmeter over it to see if there is any charge in it at all..?

I am thinking if it was in your MDC, was it still wired/connected to the electrical system?.

Was there a discharge occurring if this is so ?

I don't hold great hopes that your battery is going to be resurrectable.

In future when storing the camper, maybe disconnect the battery, and give it a top up charge every month or so.

Hi Brett
If the battery voltage is too low most chargers won't charge them. Jump starting is similar to jump starting a vehicle, hook up jump leads to a fully charged battery , (the one in your vehicle) this gets some voltage for the charger to activate, leave all hooked up for maybe 30 minutes then the flat battery will be taking charge, you can then unhook the jumper leads , the "flat" battery should be taking charge from the charger, if not after this time it is probably no good.
A battery that is below 12.4 volts will be deteriorating,especially being flat for long periods they will be damaged irreversibly. In use they will handle being down but usually are recharged straight away, so doesn't have bad affect.So the battery may be stuffed, but may still perform , but I wouldn't want to rely on it.
I use charge and maintain chargers for my motorcycles etc they keep batteries fully charged and have the ability to float charge, so you leave them on full time while in storage, well worth the investment.
Cheers hope this helps

HI
Batteries degenerate very little if u use a good 7-10amp smart charger . Remember typically a charger of lesser capacity will only be able to maintenance charge not charge from flat . Either leave it attached permanently or week on week off . A digital voltage display may be a good idea .
Does the camper come equipped with a battery charger ?? Is it a decent unit ??
swampfox

I had a car battery discharge to 1.6V Took it to Battery World who charged it over 4 days. That was in Nov 2013. Car still starts every morning no probs.

If you havent got a charger I suggest you try them.

They didnt charge me to do it either

Brett,
Do you have a charging connection between your car and the camper?
If so then hook up the car and start charging at idle speed. At the same time, plug in the 240v power lead to the camper to operate your charger. With the car alternator providing a charging voltage to the camper battery the mains charger should begin charging and the car can now be disconnected. This is essentially the same as 'jump starting' but more convenient.