How do you charge a battery on 240v if its on a solar system?

Submitted: Friday, Mar 05, 2010 at 21:17
ThreadID: 76592 Views:4071 Replies:4 FollowUps:7
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Have just set the caravan up with a solar power system, 130w panels and 100ah deep cycle agm battery.
The regulator for the solar is rated to 20a.
Do I need to disconnect the solar to run the 240v charger?

Thanks for you're help.
Bushy
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Reply By: Maîneÿ . . .- Friday, Mar 05, 2010 at 21:24

Friday, Mar 05, 2010 at 21:24
Bushy,
Just connect the battery charger alligator clips to the battery you want to charge, turn on the charger and charge it as usual.


BUT ..........

now you have a solar power system you can sell the 240v charger to someone unfortunate enough NOT to have the pleasure of solar power because you will never have to use it again :)

Maîneÿ . . .
AnswerID: 407457

Reply By: CJ - Friday, Mar 05, 2010 at 21:54

Friday, Mar 05, 2010 at 21:54
Bad advice

Do not do what he says

Keep your charger

Never say never
AnswerID: 407461

Follow Up By: Maîneÿ . . .- Friday, Mar 05, 2010 at 21:59

Friday, Mar 05, 2010 at 21:59
CJ,
what type of solar system do you use ??

Maîneÿ . . .
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FollowupID: 677374

Follow Up By: Isuzumu - Friday, Mar 05, 2010 at 22:08

Friday, Mar 05, 2010 at 22:08
Have not seen the sun for three weeks, lucky I have that cheap Chinese genny hey LOL
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FollowupID: 677375

Follow Up By: That Troopy Bloke (SA) - Friday, Mar 05, 2010 at 22:16

Friday, Mar 05, 2010 at 22:16
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Follow Up By: CSeaJay - Saturday, Mar 06, 2010 at 09:51

Saturday, Mar 06, 2010 at 09:51
Mainey

I am after one that works in my garage DUH

It is coded 240V

CJ
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FollowupID: 677404

Follow Up By: Maîneÿ . . .- Saturday, Mar 06, 2010 at 18:45

Saturday, Mar 06, 2010 at 18:45
CJ,
so just stick it on the roof, my security light is situated where there is no 240v and it works at night

Maîneÿ . . .
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FollowupID: 677477

Reply By: Ozhumvee - Saturday, Mar 06, 2010 at 11:14

Saturday, Mar 06, 2010 at 11:14
Yep just connect it to the batteries and charge away.
Depending on where you live, travel and the time of year and how you travel will depend on whether you can rely on a solar system.
If you have a large van or motorhome to allow solar generating capacity and battery in excess of your needs then yes you probably can rely on the solar year round pretty much anywhere.
If you travel in the northern half of the country during the cooler months with virtually cloudless blue skies for six months then yes you probably can rely on solar.
BUT if you are like plenty of people that travel without the luxury of a huge roof expanse to mount solar panels and plenty of space and carrying capacity for large battery banks then you either need to regularly connect to 240v in a van park or have an alternative energy source ie gennie to provide the recharging facility during inclement weather and periods of short distance/small engine running times needed to recharge batteries.
Yes we do have a small solar panel (50w) which does keep up with the Autofridge and the one CF globe we run at night. During fine weather and our normal travelling regime of several days of continuous travelling and then a max of one or two stationary the dual battery combined with the panel will allow us to camp continuously without flattening the battery.
But if we travel very slowly/only a couple of hours a day and the panel is not put out due to rain/cloud etc etc then after a week the aux battery is flat!
We encountered this scenario on our last trip to WA, all was fine till we went south of Port Headland and encountered weeks of 10/10ths cloud, rain and short travelling times and distances. With the vehicle not being run more than an hour or two a day and no solar input we found that anything past 24 hours would result in all batteries flat and us going nowhere.
After much deliberation we bought a 1kva Yammie gennie and a 25 amp Ctek which means that we can charge the batteries very quickly if needed. The 7 amp Ctek works well but means long run times for the gennie to charge the batteries.
Buying more solar capacity was preferable but raised two problems, still reduced/no generation when full cloud cover and rain periods and where do you carry the panels?
We tend to free camp mostly so having to stay in van parks/cabins was also a downer never mind the expense.
AnswerID: 407495

Reply By: Member - Dave and Shaz - Saturday, Mar 06, 2010 at 18:04

Saturday, Mar 06, 2010 at 18:04
We have 80W solar panels to charge our 110amp battery that runs the Fridgemate perfectly, plus a 12V light at night when we are bush, but we would never dream of getting rid of the battery charger just in case. Which is just as well after our 5 week trip in Tassie this time last year - 3 sunny days in all that time. We also have a Honda 20 generator for extra backup!
AnswerID: 407541

Follow Up By: Maîneÿ . . .- Saturday, Mar 06, 2010 at 18:47

Saturday, Mar 06, 2010 at 18:47
Perth has had no real rain this century, no wonder I love living in WA

Maîneÿ . . .
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FollowupID: 677478

Follow Up By: Member - Dave and Shaz - Saturday, Mar 06, 2010 at 18:59

Saturday, Mar 06, 2010 at 18:59
Definitely better for "sun hours"! My Dad lives in Sth Perth so get good weather reports from him. Good to hear you love it there, my Dad wouldn't leave Perth for anything
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FollowupID: 677479

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