Andrew Shadow
Site Supporter
With regards to the voltage.
Because it is a 12 volt DC battery intended for a 12 volt DC starter motor.
Less voltage drop does not equal voltage in excess of the design limits of a 12 volt system that are harmful, it equals less voltage drop, nothing more. The battery carries a 12 volt DC rating and is designed for a 12 volt DC starter system. If it produces voltage high enough to cause damage to that system it is misrated as a 12 volt DC starter battery.
With regards to the higher CCA.
The higher CCA does not mean that to much current is pumped in to the starter motor causing damage to it. The current that the starter motor draws is determined by how much force is required to turn the engine over and it's design limits, not by how much current is available to it. Hook a 2,000 CCA bulldozer battery to an ST1300 and its starter motor will still only draw the roughly 125 amps that it needs to turn the engine over. It isn't going to draw 2,000 amps and burn up. That battery will have almost no voltage drop as well because the ST starter motor is like a mosquito on an elephant to that battery.
