Quote:
Originally Posted by hassmaschine
jeeze, 30ah? Seems really small. I just swapped in the old battery from our X5, which i think is 100ah, because my 330i couldn't run the radio for more than a couple minutes with the engine off anymore - and the fan was starting to run crazy at low speeds due to lack of power. I knew the battery was on it's way out for a while (measures consistently under 12v) but the fan not running properly was the last straw, especially when I want the AC to be functioning.
But damn, is it heavy. The hardest part of swapping it was muscling it in place without damaging anything.
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There’s something weird about these anti gravity batteries that they crank much stronger than the AH would lead you to believe. This is from their website:
“ Models Available in 24Ah, 30Ah, 40Ah, 60Ah
but Cranking Performance better than a 90Ah Lead Battery”
I would say this is true. My car has never cranked as hard as it does now and I had a new diehard gold 60a/h AGM as my last battery before I started playing with lightweight batteries. Also using the battery monitoring software included with the battery the longest my car has sat since install was 5 days and it didn’t drop below 99% charged during that time. That’s with comfort access and the oem alarm activated too.