nickh7 Posted June 20, 2012 Share Posted June 20, 2012 Friends got a tilt bead trailer but want to keep the batery charged as he drives along Whats the best way to wire it up ? Its only single plug at prseent . I am going to wire it up weekend after next so want to make sure i've all the bits ready Nick h Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted June 20, 2012 Member Share Posted June 20, 2012 Do you already have a "cigar lighter" socket on the 7? What type of trailer plug do you have? 13 pin Euro? Jonathan Link to comment Share on other sites More sharing options...
richy Posted June 20, 2012 Share Posted June 20, 2012 Cheapest/easiest? Connect a small solar trickle charger to the battery - Maplin do a few different ones and they work in quite dull conditions too. here Richy Link to comment Share on other sites More sharing options...
shn7 Posted June 20, 2012 Share Posted June 20, 2012 Is this a battery to drive the tilt or the battery of the vehicle being towed that needs to be charged? If the latter I really can't see the need to bother. If it's the former then I'm sure there must be a way to pick up a feed from the tow vehicle socket. Pin out above suggests pins 10 and 11 will provide power when tow vehicle ignition is on. Link to comment Share on other sites More sharing options...
Grubbster Posted June 20, 2012 Share Posted June 20, 2012 Something like this I suspect is the answer. Link to comment Share on other sites More sharing options...
nickh7 Posted June 20, 2012 Author Share Posted June 20, 2012 Its a battery on the trailer that powers the the tilt bed (not car related its for hauling logs) Its a single socket I'll ask if its 13 pin Thanks for the links Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted June 20, 2012 Member Share Posted June 20, 2012 Some of those relays are interesting. Is there plenty of time to charge the battery on the trailer while it's connected to the towing vehicle? Jonathan Link to comment Share on other sites More sharing options...
Roger Ford Posted June 21, 2012 Share Posted June 21, 2012 A split charge relay is normally used for caravans, to ensure that the caravan battery can charge from the car alternator, but prevent the caravan electrics from draining the car battery when static by cutting the connection at a certain voltage. Sounds like overkill in this situation, since there's little chance of tilt bed draining the car battery. So a simple direct 12v connection from the car to the trailer battery should be sufficient. A single old-style trailer socket doesn't carry a fixed 12v feed, so you'd need to wire a separate dedicated connection, or a double-socket layout, or use the newer 13 pin Euro socket. Link to comment Share on other sites More sharing options...
rj Posted June 21, 2012 Share Posted June 21, 2012 Best way IMHO will be a CTEK d250s (Google it, being in Denmark the answers I get are in Danish, and I suppose that's no good for you.) It will ensure the battery is fully charged, and will compensate for the voltage drop caused by the length of the wires. They still need to be proper though. Link to comment Share on other sites More sharing options...
Roger Ford Posted June 21, 2012 Share Posted June 21, 2012 Hmm, 10 quid for a solid-state split charge relay from Towsure, or over £200 for the CTEK device. I know which I'd choose! Link to comment Share on other sites More sharing options...
Nigel Fox Posted June 21, 2012 Share Posted June 21, 2012 You need a split charge relay. If you connect direct to the car, when you crank the the car the voltage will drop and the trailer battery will try contribute to the starter motor current. This will fry the low current trailer wiring. Link to comment Share on other sites More sharing options...
Roger Ford Posted June 21, 2012 Share Posted June 21, 2012 Ah, good point, hadn't thought of that. Link to comment Share on other sites More sharing options...
elie boone Posted June 21, 2012 Share Posted June 21, 2012 let the jockey weel run on the ground and connect it with a v belt to an alternator 😬 Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted June 21, 2012 Member Share Posted June 21, 2012 Quoting Nigel Fox: You need a split charge relay. If you connect direct to the car, when you crank the the car the voltage will drop and the trailer battery will try contribute to the starter motor current. This will fry the low current trailer wiring. I see the logic. Does it happen in practice? Jonathan Link to comment Share on other sites More sharing options...
Nigel Fox Posted June 21, 2012 Share Posted June 21, 2012 I haven't tried it, but I that's how batteries connected in parallel will behave. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now