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Author: Subject: Altenator. How much can it handle?
Membersnifter
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posted on June 19th, 2005 at 05:38 PM
Altenator. How much can it handle?


I have a 75 kombi with a 55amp alt. 55 amp I think.

I have recently put in two, new, deep cycle aux batterys, in parallel. These are connected to the main battery + (new) by a smart relay. It allows the main batt to be charged up fully before allowing the aux batterys to be charged. It is all fused and works well. Relay and Wire supplied by the proffesionals.

My friend, like myself is a sparky and had concerns that the altenator might no handle the load. We are not auto wise. Should I worry? Should I remove one of the aux batts from the system?

I am running a small fridge, small sound system and two 100watt extra head lights (which I rarely use) What do you think

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Philip
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posted on June 20th, 2005 at 02:10 PM


Quote:
Originally posted by snifter
I have a 75 kombi with a 55amp alt. 55 amp I think.



That's the standard size.

Quote:


I have recently put in two, new, deep cycle aux batterys, in parallel. These are connected to the main battery + (new) by a smart relay. It allows the main batt to be charged up fully before allowing the aux batterys to be charged. It is all fused and works well. Relay and Wire supplied by the proffesionals.

My friend, like myself is a sparky and had concerns that the altenator might no handle the load. We are not auto wise. Should I worry? Should I remove one of the aux batts from the system?



From what you've described you shouldn't have a problem charging those batteries. The rate at which they charge is actually dependent on the wire size. A thinner wire will result in them charging at a lower rate and vice-versa.

Quote:

I am running a small fridge, small sound system and two 100watt extra head lights (which I rarely use) What do you think

Regards

Philip


I think if you had all those things running at once (and the aux batteries were recharging) you would be exceeding the alternator output (about 600w). Check the headlight globes. The stock were something like 45w on high beam so previous owners may have beefed them up. One of mine was 100w/90w! I now have 65/55 headlights and 2 x 50w driving lights and they seem to do the job.

Another thing to do is clean off the last 30yrs of corrosion on the various terminals. The most significant is the one on the solenoid that joins the alternator output to the battery and is the take off point for heaps of other things. By just cleaning this terminal I increased the voltage up the front by 0.5v.
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posted on June 20th, 2005 at 02:51 PM


that sounds way less than i used to run in my last camper..
she'll be right




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