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Subject Topic: Battery charging ???? Post Reply Post New Topic
03/10/2012 at 1:37pm
 Location: Tyne & Wear
 Outfit: Elddis Typhoon GT- Nissan X-Trail
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Hi Campers

Brand new to this and just purchased my first van. Could someone tell me when the battery takes a charge. Is it only when hooked to EHU or does ot take a charge when being towed???????????  Thanks

 

PS I have an elddis typhoon gt 2001



03/10/2012 at 1:49pm
 Location: Hants
 Outfit: Fleetwood Heritage 640 EB & ML270
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Both, but don't expect a huge charge when towing.


03/10/2012 at 1:58pm
 Location: Tyne & Wear
 Outfit: Elddis Typhoon GT- Nissan X-Trail
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Thanks, had different advice from others


03/10/2012 at 5:42pm
 Location: Lowestoft Suffolk
 Outfit: Skoda Superb DSG + Elddis Affinity 550
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Quote: Originally posted by Al+Mel on 03/10/2012
Both, but don't expect a huge charge when towing.



Agreed, but you must have the twin towing electrics with the grey 12S socket..


03/10/2012 at 6:22pm
 Location: Lichfield
 Outfit: Coachman Amara 450
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What many fail to understand and the reason why they encounter battery problems in their caravan is they think that the 12 volt charge from the towcar is as powerful as charging by 240 volt mains at home and it's not, far from it. So the idea is to start out with a full charged leisure battery which the current from the car will just keep the battery topped up with a charge without actually over-charging. Even the onboard battery charger or generator won't charge at the same rate taking longer than expected to fully carge the battery so it's vital that the leisure battery is in good condition and fully charged before any trip. If you are out on a site without any electric hook up such as a rally, you have to beware of the power you consume but it's the things you don't notice like leaving the TV power pack switched on that will drain the battery. Even experienced caravanners can have problems at times like I did last year when trying to charge my leisure battery with a generator daily and wondering why it was not holding a charge. First assumption is that the battery was naffed but not having a TV at the time I didn't actually understand what the red light was on the TV/Radio power pack. Once explained by a fellow caravanner I switched it off but it took days to recouperate the charge afterwards by means of a generator. I was quite lucky though because if the charge drops below 12.6 volts you can sometimes have problems kick starting the leisure battery again to which I was rather fortunate that my battery didn't actually die for good.


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03/10/2012 at 6:31pm
 Location: Norwich
 Outfit: Citroen Relay Campervan
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Quote: Originally posted by tango55 on 03/10/2012
I was quite lucky though because if the charge drops below 12.6 volts you can sometimes have problems kick starting the leisure battery again


Sorry Tango but that is wrong. 12.6 volts is almost fully charged and leisure batteries are designed to allow them being drained to a very low state and recharged again. My 5 year old battery has been down to 8.5 volts on many occasions, without causing damage. The damage is mainly caused when they are left flat for a long period.

-------------
Cheers
John


03/10/2012 at 7:30pm
 Location: Tyne & Wear
 Outfit: Elddis Typhoon GT- Nissan X-Trail
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Is the fact that I'm plugged into 240v enough to charge the battery or will there be something I should turn on? Sorry but I am a complete novice....


03/10/2012 at 7:42pm
 Location: West Mids
 Outfit: Swift Ace Statesman & X-Trail 2.0
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Quote: Originally posted by Stephen Bell on 03/10/2012
Is the fact that I'm plugged into 240v enough to charge the battery or will there be something I should turn on? Sorry but I am a complete novice....


Depends on the van but in general, the charger usually engages once you're connected to EHU. Most chargers now are integral to the electric panel/consumer unit and don't have access to switching them on/off, so operation is by-and-large, automatic.

-------------
Paul

Every day's a school day!


03/10/2012 at 7:42pm
 Location: Hants
 Outfit: Fleetwood Heritage 640 EB & ML270
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There is usually a switch on the PDU.


04/10/2012 at 1:34pm
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In my elddis vogue the charger has to be switched on and it sits in the bottom of the clothes cupboard at the back of our van next to the electric trip switches.

-------------
Regards
Karen


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04/10/2012 at 2:40pm
 Location: Tyne & Wear
 Outfit: Elddis Typhoon GT- Nissan X-Trail
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Thanks peeps charger kicks in when connected to EHU


04/10/2012 at 2:40pm
 Location: Somerset
 Outfit: Hobby 560 Prestige +VW Touareg
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Sorry Tango, but I beg to differ regarding the power output from the car's alternator.  Alternators on most modern cars/light trucks are rated at 50-70 Amps, which is considerably higher than the 12-15 (IIRC) my CTEK in the van is capable of, or any other domestic battery charger you might have in the garage.

Not quite sure what you mean by: "Even the onboard battery charger or generator won't charge at the same rate taking longer than expected to fully carge the battery"......same rate as what??

However, for the benefit of the OP, I always plug in the EHU 24 hours before setting out - this to ensure the battery is fully charged for use by the mover, and to get both fridges down to temperature (which in turn ensures I have ice for the G+T as soon as I get on site ).  Also, just having a 12S socket/plug is no guarantee - the van must also be wired up correctly to take the split charge.  Easy to check - plug the van into the car (12S), have someone rev the engine and put a meter across the leisure battery - if you get more than 13 volts, everything is working OK.

Del

 



04/10/2012 at 4:46pm
 Location: Hants
 Outfit: Fleetwood Heritage 640 EB & ML270
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Plenty of poke from the car's alternator true. Isn't the problem that the car's voltage regulator senses that the car battery is charged (pretty much always is) and drops the charge rate so the 'van battery doesn't get much?


04/10/2012 at 5:02pm
 Location: Yeadon Leeds!
 Outfit: Swift Challenger & Defender 110SW
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I usually charge up at home, which gets me 85%, as much as any caravan charger will do, my motor, on a 2 hr trip will then easily top this up to 100% charged.

12.6V is fully charged, 6 cells at 2.1V each
11.8V (ish) would be dead as a dodo for function, as long as not left dead for long periods of time, they will recharge (if left, the lead sulphate builds up, and the battery is knackered.)



04/10/2012 at 6:02pm
 Location: Hants
 Outfit: Fleetwood Heritage 640 EB & ML270
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According to my chart 12.7v is fully charged. 12.58v is 90%.



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