Outer Limits 4x4 Board

Seems as though no one lists the Ah capacity for their cranking batteries.

Does anyone have an idea of how many Ah you would typically get from your standard large 4WD battery — like a 700CCA Centaury N70ZZL or something similar?

Just trying to decide wether I should buy a deep cycle for my fridge and accessories or whether I can get away with a faster charging starting battery.

Deep cycle would be the way to go. Crankers are not made with thick enough plates to do more than several deep cycles before they start to fail.

Look at a decent AGM in any of their construction methods (spiral Optima or flat plate Odyssey) as you generally get better depth of discharge and repetitions values, and with the Odyssey's you dont need to limit the inrush charging current, only keep it to 14.2-14.7 volts.

The Century NS70ZZ4wd battery has 700 CCA & rc of 170AH.

I use this battery for my starting battery, which (when not running) powers the cd, UHF and rock lights, as well as everthing which is standard on the lux.

My 2nd battery is a sealed semi deep cycle, about the same size of the NS70ZZ, with rc of 220AH. it can run the fridge and other lights (camping) overnight without drama

BundyBrumby wrote:The Century NS70ZZ4wd battery has 700 CCA & rc of 170AH.

I use this battery for my starting battery, which (when not running) powers the cd, UHF and rock lights, as well as everthing which is standard on the lux.

My 2nd battery is a sealed semi deep cycle, about the same size of the NS70ZZ, with rc of 220AH. it can run the fridge and other lights (camping) overnight without drama

Reserve capacity is measured in minutes, not Amp-hours. See here for more information on how it's measured.

the exide extreme N70 battery has an 80 amp/hr capacity. it is marketed as a 'dual' starting/cycling battery and comes with a 2year waranty. from what i have been told, it is a VERY similar construction to the deep cycle battery which carries a one year waranty(i dont know this fact for certain!).
cookie monster

DAMKIA wrote:Deep cycle would be the way to go. Crankers are not made with thick enough plates to do more than several deep cycles before they start to fail.

Look at a decent AGM in any of their construction methods (spiral Optima or flat plate Odyssey) as you generally get better depth of discharge and repetitions values, and with the Odyssey's you dont need to limit the inrush charging current, only keep it to 14.2-14.7 volts.

Thanks guys, I think that I'll go with a basic 80Ah deep cycle. Can't really afford an AGM type and a deep cycle should be a little more robust than a standard one if it gets run low from time to time.

Hi John, should you ever need a jump start, you can still use the deep cycle battery and not do any harm to it. I wouldn’t recommend you do it all the time but every now and again, is not going to have a dramatic effect on the deep cycle battery’s life span.

Cheers