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| TECH/MECH GENERAL Discuss anything technical or mechanical that doesnt easily fit into the other sections. |
04-12-2009, 16:26
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#1 (permalink)
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Funster
Funster No : 9561
Join Date: Dec 2009
Location: Isle of Man
MH Type: C Class
MH Model: Bessacarr E445
Years Motorhoming: 3
Posts: 21
Thanks: 13
Thanked 1 Time in 1 Post
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Battery Charger
Just got myself an 06 Bessacarr E445, well pleased with it but the leisure battery is shot :-( Dealer has replaced it under warranty with a Numax 113Ah so chuffed with that. The question I have is about the onboard charger.
I have heard that leaving the van permanently on EHU when at home will boil the battery and shouldn't be done. Is this correct even for the newer vehicles ?
If this is the case I was wondering whether to change the charger for one that is designed to be left permanently connected but today saw on a website selling the Numax (which is designed to be left connected all the time) that the Numax can not be used as a replacement for the onboard charger?
Can anyone help? am I missing something obvious here ?
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04-12-2009, 16:32
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#2 (permalink)
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Funster
Funster No : 2913
Join Date: May 2008
Location: Ilfracombe, Devon
Interests: Motorhoming, smallholder, ham radio
MH Type: coachbuilt
MH Model: Mercedes Newlander
Years Motorhoming: 45
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I would suspect that the numax has a very low charge rate so using it to replace the onboard charger would result in flat batteries when the van is in use, whilst used as a a top up for natural wastage on a stored vehicle however would be fine. I hope I have made myself clear.
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The Following User Says Thank You to Wildman For This Useful Post:
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04-12-2009, 16:38
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#3 (permalink)
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Funster
Funster No : 9561
Join Date: Dec 2009
Location: Isle of Man
MH Type: C Class
MH Model: Bessacarr E445
Years Motorhoming: 3
Posts: 21
Thanks: 13
Thanked 1 Time in 1 Post
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the numax is rated at 10A if that means anything?
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04-12-2009, 16:41
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#4 (permalink)
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Funster
Funster No : 5089
Join Date: Dec 2008
Location: Just South of Manchester
Interests: MH, Biking, watching bike racing.
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MH Model: Burstner 530
Years Motorhoming: From Aug 2007
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Quote:
Originally Posted by nic
I have heard that leaving the van permanently on EHU when at home will boil the battery and shouldn't be done. Is this correct even for the newer vehicles ??
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Certainly should NOT be.
It's voltmeter time. Leave it on charge a few days, measure the voltage whilst connected and get back to us. Though if you see anything over 14.5V shut down immediately.
Ours is on month after month, I do have to top up the battery but only every other month or when I remember and the battery is 6 years old now. German Quality !!
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Brian.
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04-12-2009, 16:45
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#5 (permalink)
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Funster
Funster No : 9561
Join Date: Dec 2009
Location: Isle of Man
MH Type: C Class
MH Model: Bessacarr E445
Years Motorhoming: 3
Posts: 21
Thanks: 13
Thanked 1 Time in 1 Post
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Will be going up the van tomorrow, its been on hook up all week so will get my meter out, I never thought of that obvious solution !
Cheers.
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04-12-2009, 17:27
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#6 (permalink)
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Funster
Funster No : 172
Join Date: Aug 2007
Location: scarborough, nth yorks
About Me: Waiting for Tommorrow
Interests: beer,tv and motorhoming
MH Type: coachbuilt
MH Model: swift kon-tiki
Years Motorhoming: 5 years
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the cheapest way when on hookup in storage is a timer.
assuming you store the van at home then just a simple plugin household timer is fine.
set it to 15 minutes per day and forget about it.
the other option is turn the charger off and switch back on for a few hours once a fortnight. just remember to turn it off again.
the most efficient route is a 3 or 4 stage charger/power supply....they are designed to be left permenantly connected and will trickle charge when no load is applied.
i use one of these.....AMPOROR CHARGER
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04-12-2009, 18:35
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#7 (permalink)
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Funster
Funster No : 15
Join Date: Jul 2007
Location: Suffolk Coast
Interests: Guitar,Travel, Photography
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Quote:
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the most efficient route is a 3 or 4 stage charger/power supply....they are designed to be left permenantly connected and will trickle charge when no load is applied.
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I agree, but the model you point to John isn't a combined charger/power supply unit ..
( been here before I think )
Sterling do a range .. https://sslrelay.com/s74222713.onean...dex.shopscript
search the ProBudget 20A model..
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04-12-2009, 19:18
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#8 (permalink)
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Funster
Funster No : 172
Join Date: Aug 2007
Location: scarborough, nth yorks
About Me: Waiting for Tommorrow
Interests: beer,tv and motorhoming
MH Type: coachbuilt
MH Model: swift kon-tiki
Years Motorhoming: 5 years
Posts: 8,910
Thanks: 493
Thanked 1,709 Times in 1,388 Posts
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Quote:
Originally Posted by ScotJimland
I agree, but the model you point to John isn't a combined charger/power supply unit ..
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maybe so Jim, but what difference does it really make.
the original item it replaced was only a charger, not combined, so it charges the battery as battery power is used on the 12v circuits.
ok...if you want to run 12v stuff independant of a battery you will need a power supply/ charger but how many eurovans actually run 12v from a power supply ?
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-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- I'm trying to see it from your point of view but i cant get my head that far up my ass _-_-_-_-_-_-_-_-_-_-_-_
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