Battery Help...
Submitted: Saturday, Jul 11, 2009 at 20:29
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greg86
Hello
I have a set of anderson plugs with is connected to my car and trailer (which i can disconnect). Than i have a 12v plug on the end. which my fridge is connected too. I want to add another battery to my trailer so when im on my camping trips i can disconnect the trailer and still have the fridge running. I just need an rough idea if i can charge my second battery (on my trailer) whilst using the fridge which is connected to my car.
I have a set of anderson plugs with is connected to my car and trailer (which i can disconnect). Than i have a 12v plug on the end. which my fridge is connected too. I want to add another battery to my trailer so when im on my camping trips i can disconnect the trailer and still have the fridge running. I just need an rough idea if i can charge my second battery (on my trailer) whilst using the fridge which is connected to my car.
I have an diagram
http://tinyurl.com/kqzmwr
its the set up but i need to add the fridge between the car and trailer.
Reply By: ABR - SIDEWINDER - Saturday, Jul 11, 2009 at 20:36
Saturday, Jul 11, 2009 at 20:36
Perhaps this will help.
Regards
Derek from ABR
AnswerID:
374099
Reply By: obee1212 - Saturday, Jul 11, 2009 at 21:00
Saturday, Jul 11, 2009 at 21:00
I am a bit confused whether the fridge is in the car or the trailer but no matter. If you are running anything on the circuit you can add a charger to the circuit but it really needs to be a regulated supply in my opinion. The cheapie chargers can be putting out 16v and above (depending on how much the circuit is pulling the voltage down) and I am not sure if the fridge motor and electronic circuit will handle it.
A good gennie puts out regulated dc as does your car. If you want to fast charge (higher volt supply) you should disconnect/turn off the fridge I think. I would anyway.
Another consideration with cheap chargers is the choppy nature of the dc.
Now you have my opinion, drop by at an auto electrician's and get some good advice!
Owen
AnswerID:
374103
Follow Up By: Member - Johny boy (NSW) - Sunday, Jul 12, 2009 at 08:40
Sunday, Jul 12, 2009 at 08:40
Hey Owen I thought that was good advice !!
Yeah spikes are what can kill components ,I have seen many things give up the ghost due to using cheap
Inverters or generators .
Cheers.
FollowupID:
641351
Reply By: Maîneÿ . . .- Sunday, Jul 12, 2009 at 11:05
Sunday, Jul 12, 2009 at 11:05
Greg states:
"can I charge my second battery (on my trailer) whilst using the fridge which is connected to my car?"
I believe, the 2nd battery and the fridge are both in the trailer
the 2nd battery is connected via an Anderson plug to the car
If the 2nd battery is to be charged by any other method I would consider the quality of the charging device used, as mentioned above.
Image Could Not Be FoundMaîneÿ . . .
AnswerID:
374173
Reply By: Member - Mike DID - Sunday, Jul 12, 2009 at 18:05
Sunday, Jul 12, 2009 at 18:05
If you're talking about charging the Trailer Battery from the Alternator while the trailer Fridge is running, it depends -
- is the fridge a compressor type drawing 5amps for 50% of the time, or 3-way drawing up to 15 amps most of the time.
- how thick is the cable from Engine compartment to trailer battery
The battery will only charge if the voltage is high enough - voltage drop in the wiring will reduce the charge rate - the continuous load from the fridge may cause so much voltage drop the battery never gets to charge.
AnswerID:
374210