battery again

No eBay APP ID and/or Cert ID defined in Kunena configurationI was looking at this,would it be overkill?

I am an electrician and although vehicle electrics differ, the principles of current flow vs resistance vs voltage dont change.

Reapers philosophy on this subject is sound.

SUGAR DELTA wrote:

supergaz wrote: Yup, just use a split charge system of lesser rating. 60Ah max.

60Ah split charging system,ok why is this please?
If I want to charge a 110Ah don't I need one that's rated for that ?

Cheers =)

This is because your jimny alternator only gives out 60Ah, you only need to trickle charge an auxilary battery.

I am a qualified electrical and electronic engineer and fully agree with Reaper.

I ran two batterys without a split charge and found when winching the alternator struggle to give full power and one battery would drain the other without fully charging both them up.
Go with reapers advise, its nice and simple could even fit some gauges to double check readings.

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SUGAR DELTA wrote: I was looking at this,would it be overkill?

This is not an automatic split charge system it's only a manual relay and a very expensive one at that, you can get the same relay here www.vehicle-wiring-products.eu/VWP-onlin...lays/relays.php#high
for £16 which means you're paying £54 for a couple of fuse holders, a bit of wire and a few cable ties.
I think you're after one of these, can someone confirm it's "big" enough?


John.

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Johnniehec wrote:

SUGAR DELTA wrote: I was looking at this,would it be overkill?

This is not an automatic split charge system it's only a manual relay and a very expensive one at that, you can get the same relay here www.vehicle-wiring-products.eu/VWP-onlin...lays/relays.php#high
for £16 which means you're paying £54 for a couple of fuse holders, a bit of wire and a few cable ties.
I think you're after one of these, can someone confirm it's "big" enough?


John.

Cheers bud,I aint bought anything yet .
I echo can anyone tell me if 30amp is big enough to charge a 110ah leasure battery from the alternator?

What you need is electric system similar to boat system.
The two batteries are not connected but have a split charging system.
One of the batteries is the main battery, used to start the engine and the second battery is for all other consumers.
This way even if you run out of battery you will be able to start.

Cheers all,I like the look of this and at £40 it will do
www.x-eng.co.uk/X-Charge.asp

my dual battery system.
i have make trunk new metal box two battery, i jus cut hole and welding new bigger box.
i have 120amp alternator. battery is 2x72ah and 610amp .

HiJande where did you get 120amp alternator for your jimny.

yes i have 120apm alternator, but i have 1.9tdi vw engine;)