Battery charger regulator

Submitted: Monday, Jun 28, 2004 at 08:22
ThreadID: 14198 Views:1988 Replies:7 FollowUps:7
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Hi all, i've done a search on both archive and active, as well as a google search and didn't find what i wanted, a regulated battery charger for leaving on the battery and keeping it topped up when it is not being used and for keeping in topped when it is being used as well. we don't run a fridge off the battery, only 3 12w nelson energy saving lights 1 to 3ah max and a water pump once or twice a day which runs off the car to have a shower. What i want to do is run an inverter off the battery to run a charger for this, i have been told it can be done but the charger needs to be regulated so as not to cook the battery, is there a charger that does this or is the regulator a seperate item that is attached to the battery and charger to regulate the the charge going to the battery. we have looked at solar panels but it is out of our price range at this time.

Baz.
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Reply By: Flash - Monday, Jun 28, 2004 at 08:37

Monday, Jun 28, 2004 at 08:37
Are you trying to run an inverter/ charger off one battery to charge another??
Very confusing post.
You CAN get regulated chargers, to run off inverters, to charge a separate battery, but the drain on your first battery would be relatively large due to the inefficiency of the inverter and charger.
(I assume you are not trying to charge the battery you are running the inverter from... No Can Do! There is no such thing as free energy- it has to come from somewhere.)
AnswerID: 65464

Follow Up By: Baz (NSW) - Monday, Jun 28, 2004 at 09:20

Monday, Jun 28, 2004 at 09:20
I think i posted too much info maybe, no you assumed right thats what i wanted too do, this is what i have told that is was possible, not being electrically minded only believe what i'm told. Thanks for the advice, would you what brand these chargers are or where i could get one.

Baz.

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Follow Up By: steve - Monday, Jun 28, 2004 at 12:42

Monday, Jun 28, 2004 at 12:42
As Flash said, not possible to charge a battery from itself no matter what system u use. Never ending free electricity, that would be nice!

Steve.
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Reply By: Member - JohnR (Vic) - Monday, Jun 28, 2004 at 09:01

Monday, Jun 28, 2004 at 09:01
Baz,

Shall look at the one I have permanently connected to our standby generator battery. It keeps anything charged that I need and the generator ready to go provided there is a batter connected. LOL

Cheers,
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John

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Follow Up By: Baz (NSW) - Monday, Jun 28, 2004 at 09:08

Monday, Jun 28, 2004 at 09:08
Hey John thanks, i have been told that you can use the battery you want charged to power a charger to charge it, if that makes sence or have i misunderstood what was said and you need another power sorce to charge it, (ie) another batt or 240v outlet
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Follow Up By: Member - JohnR (Vic) - Monday, Jun 28, 2004 at 11:11

Monday, Jun 28, 2004 at 11:11
Baz,

Have an Arlec Automatic set up on the generator. It is supplied by 240v and just switches to charge when it is needed to top up the battery. We also clip other batteries on to the sub-system when we need to charge them for a day or two and it will monitor and charge them as required, or at least that is my understanding of the process.

If Bonz' colleagues can't keep up the supply then the generator is ready to switch in.

We got it from our local garage which also specialises in auto electrical. Got a vere smart guy there. They are also well into 4bys too.
Cheers,
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John

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Reply By: Baz (NSW) - Monday, Jun 28, 2004 at 10:27

Monday, Jun 28, 2004 at 10:27
NEW PIC
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Follow Up By: Member - JohnR (Vic) - Monday, Jun 28, 2004 at 11:29

Monday, Jun 28, 2004 at 11:29
The new pic brought up a server error actually Baz.

Don't run an inverter to run a charger unless it is for different voltages as it will be inefficient.
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John

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Follow Up By: Baz (NSW) - Monday, Jun 28, 2004 at 11:32

Monday, Jun 28, 2004 at 11:32
Yeah the pic is the one you email me it is the wrong format, need to be jpg/gif/png/bmp for it to work.

Baz.
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Reply By: AT4WD ADVENTURES - Monday, Jun 28, 2004 at 10:37

Monday, Jun 28, 2004 at 10:37
Baz,

Not sure about what you are after but would offer the following as way of straightening out your thinking:

1. Think of a battery as a storage device for energy.

2. Charging sources for a 12 volt DC battery are solar via regulator, car alternator via regulator, 240 volts thru a 12 volt dc battery charger or an approriate generator.

3. So you need one of the products in item 2 above to place stored energy into item 1 above.

4. Although charging one battery from another in theory could be down but I can't see the reason for doing so as it would be most inefficent.

5. A battery that self charges from itself doesn't exist and if it did someone would be a rich person.

6. Basically to create stored electrical energy (battery) there needs to be a charging source and except for solar all involve some kind of mechanical motor connected to a generator or alternator (even the large power station which provides electrical energy to you house.)

Hope this irons out your thinking.

Stuart
AnswerID: 65481

Follow Up By: Baz (NSW) - Monday, Jun 28, 2004 at 11:01

Monday, Jun 28, 2004 at 11:01
Wishfull thinking, thanks Stuart we have to get a new charger anyway SWMBO killed my one trying to put a regulator on it.

Baz.

Thanks everyone for your help.
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Reply By: Mick - Monday, Jun 28, 2004 at 12:33

Monday, Jun 28, 2004 at 12:33
How about an Outback Battery Charger, which has the voltage regulator inbuilt!
AnswerID: 65492

Reply By: Sand Man (SA) - Tuesday, Jun 29, 2004 at 01:30

Tuesday, Jun 29, 2004 at 01:30
Baz,

There is a controller available that connects between a battery charger and the battery being charged, which protects the battery from being overcharged.

This is especially good for, (but not limited to) deep cycle batteries.

Check this site out:-
http://www.projecta.com.au/products/index.php/command/viewproduct/productserial/20/categoryserial/10

Cost is about $50.00 I think.

Sand Man
Bill


I'm diagonally parked in a parallel Universe!

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AnswerID: 65622

Reply By: ianmc - Tuesday, Jun 29, 2004 at 13:11

Tuesday, Jun 29, 2004 at 13:11
Still not sure what U want however U can buy for about $40 a 240v 2.5 amp charger which is regulated & when the battery is charged it cuts out to maintenance charge only so no overcharges.
Also for about $20 there is a car to car (or car to battery) device which transfers charge from one 12v battery to another via cig light type sockets & I have used one & carry it most times just in case.
AnswerID: 65652

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