Friday, Aug 17, 2007 at 10:49
Fleggy, I am not saying the Extreme is not of fantastic build "quality" as it's an excellent Starting battery for most ppl.
However, the Extreme will revert to only 6 months warranty when used as a deep cycle only or Accessory battery.
The warranty expressed on the battery is only for starting purposes both commercially (18 months) and private (24 months) The hybrid design that allows for cycle duty is within the function of the vehicle electrics, many large transporters have multiple electric devices that draw
battery power with the vehicle running and this is the intended purpose of the hybrid design.
Whereas a deep cycle design caters for supplying power with no alternator running into it. It will supply power for a designated time depending on the amp draw rate.
Any battery used out of the specified application (heavy duty cranking) could have the warranty totally voided, the Extreme does have the potential for light cycle duty and is naturally a very robust starting battery.
AGM's are more expencive than conventional wet cel batteries, and are more useful as Accessory batteries because of their very low internal resistance they will recharge faster and more complete than wetcel batteries.
Wetcels are more suited to hot engine bay conditions because the battery acid can be replaced via the 6 filler plugs however this is not possible in sealed batteries and causes premature failures.
As to brand, look for long warranty and high CCA rating when looking for Cranking batteries, and Extreme fits this extremely well with it's 2 year warranty if you happy to pay the price and only need 620cca, as it's suitable for 6cyl Landcruiser diesel motors.
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