97 SL500, 98 E320 Wagon, 2002 ML500 - former W108/W112/W114/W123/W124/W126/W140/W220
Absolutely. I suspect I had a shorted or intermittently shorted cell in the old battery. It had sat in the car for over a year unused, so it was no doubt heavily sulfated. I used a "recovery" charger on it for a length of time, which probably knocked some of the crud off the plates, which then fell off and shorted them.Stable power supply is the key. No dips on startup, no alternator going over 15V trying to recharge the brick.
At least that's my hypothesis. The FLAPS battery tester just said it was bad, but I know my FLAPS guy well and I accused him of the tester always saying that no matter what the battery's condition so they could sell new batteries....