Which trickle charger should I purchase?

I would not be buying a trickle charger but a decent smart charger so it can better maintain the battery and ensure it gets a full charge.

I use several with two CTEK units and two Aldi budget offerings to keep my vehicle and camping batteries as healthy as possible.

The CTEK 5 amp job would be an excellent choice handling anything you are likely to have, but if Aldi have an offer on their 4 Amp budget charger at about £15 this would also be quite adequate.

This is an example but prices could be better elsewhere:

https://www.amazon.co.uk/CTEK-MXS-5-0-Temperature-Compensation/dp/B00FC42HAA/ref=sr_1_1?ie=UTF8&qid=1472883584&sr=8-1&keywords=ctek+chargers

C-Tech chargers are the ones most will advise you are the best.

peedee

When we had our caravan we had 2 110ah batteries we used to cycle keeping 1 on charge in the garage and never had an issue. Like others we have a ctek smart charger so it keeps battery in tip top condition. 

Still have the 2 batteries so if anyone us interested in buying let me know. 

I bought a Numax connect and forget, smart battery charger, as I cycle two batteries, as we have a tracker. Seems to work very well, £55 to £65 depending on where  purchased.

Thanks for the great advice, I will definitely be purchasing a smart charger. Am I right in saying that these chargers plug straight into your household mains socket and don't need an adapter?

You are correct, at home connect to the battery first, then plug into the mains and watch. The smart chargers have a selection of different phases and will do what the battery needs. Don't put your battery on a cold floor, if going on the floor put some wood underneath it, and also in a reasonably ventilated space, no naked flames.

Yes , those retailed in the UK should come with a conventional 3 pin 13 Amp mains plug prefitted.

Couple the battery's leads to the battery as directed then plug in switch on. On most chargers you will then need to index to some icon showing a "car" or 12 volts, but it is very intuitive. Then with a decent charger you can if you want leave it connected till you need to use the battery.

As a slight alternative, have you considered getting a solar panel fitted to the caravan? Assuming you aren't storing your caravan inside, this would keep the battery topped up, mean that you don't have to take it out to charge, and also mean you can more easily venture places without EHU!

Halfords do a smart charge, it charges the battery then automatically turns onto maintenance.

Bought the ctek mxs5.0,  I went to remove battery to charge at home, then realised that when my wife told me it was flat with no voltage that she hadn't flicked the switch from car to van! The battery is absolutely fine and nearly fully charged. Oh well I guess I should've checked myself, I will use the charger ar some point anyway to recon the battery so not a pointless purchase. Thanks again for the advice