chrisk Posted November 28, 2016 Share Posted November 28, 2016 Hi, Hope someone can advise me of a solution to this particular problem. I have a 2008 Knaus sun -ti 650. The leisure battery is only 6 months old and is not receiving a charge from the alternator. The vehicle battery charges fine and the leisure battery charges fine on the 240V supply. Any ideas please? Thanks Link to comment Share on other sites More sharing options...
Derek Uzzell Posted November 29, 2016 Share Posted November 29, 2016 Welcome to the Out&AboutLive forums, Chris. It might be useful if you could confirm that the leisure-battery used to be charged by the alternator OK and the present problem suddenly appeared (which could indicate that the cause is something simple like a fuse failure). The age of the battery should not matter, but identifying the most likely reasons for the leisure-battery not being charged by the alternator will depend on knowing the make/type of electrical equipment Knaus fitted to your motorhome. Being German-made, there’s a good chance that the system will include a Schaudt Electroblock, but there’s no guarantee that this is the case. Without knowing what electriclal equipment your motorhome has, advice will be based more on educated guesswork. Link to comment Share on other sites More sharing options...
aandncaravan Posted November 29, 2016 Share Posted November 29, 2016 I assume it is fitted with a Calira 38/20 or 30/20?? Is it possible the old batteries overloaded the charging circuits as they died, prior to being replaced, or is it much more recent? As a start point, have a look for 'add on' style maxi fuses next to/above the Starter battery and see if any have failed? These won't be part of the vehicle fuse set, usually just a pair of 'loose' fuses, 50A and a 2amp. Sometimes a third fuse, a 20A. If there is any sign of corrosion on the Fuse 'legs', suggest you replace them as a matter of course rather than clean them? Link to comment Share on other sites More sharing options...
monique.hubrechtsgm Posted December 3, 2016 Share Posted December 3, 2016 How did you check the load current when engine running at idle or driving? Can you read out the charge current on the panel or other? Was the battery under 10.5 V? Is your fridge working on 12V when driving? Do you have the original circuit diagram? Is it a fiat ducato? Are any fuses blown? Link to comment Share on other sites More sharing options...
Derek Uzzell Posted December 4, 2016 Share Posted December 4, 2016 A 2008 Knaus Sun Ti 650 would be based on a Renault Master - example here http://www.practicalmotorhome.com/reviews/motorhome/30086-knaus-sun-ti-650-mf Link to comment Share on other sites More sharing options...
monique.hubrechtsgm Posted December 6, 2016 Share Posted December 6, 2016 I am bad on this but carry always some spare fuses. And get used to of the slots in your mobile. The charge currents of main shore supply, solar, alternator can be read out. In our club dead batteries are common even new ones after six months. Charge them and unload and repeat that is the question. To keep them alive. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.