Thursday, Mar 02, 2006 at 12:36
Wok, the MF31-930 is a Cranking battery, and according to the battery manufacturer is designed to be used as a Cranking battery - not as a Deep Cycle battery running a fridge etc.
As Mike has said Calcium batteries do charge slowly from an alternator and it's more than probable that the alternator will be the major charging source when your driving in the bush away, from 240v.
These batteries would be good as Cranking batteries due to their massive CCA capacity, however as a 'storage' battery would not be the first choice as a storage battery has to be able to be recharged very quickly and able to be fully charged, not only 70% to 80% charged as is what will happen with an alternator, this matter has been done to death on every 4wd
forum and allways with the same result.
Get an AGM Deep Cycle battery and you will have no problems, you can't recreate the wheel by using a Crank battery as a Storage battery.
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