New batteries can hasten GP failures, my experience says.

I put a new battery in my '79 300SD and after the very first start I blew out a GP. I can't imagine this was a coincidence and it makes some sense. If you have some weak GPs and they are running on an older weak battery and then you replace it with a brand new one you might just push them over the edge on that very first start...at least that's what happened in my case.

FWIW I bought a nice big 1000 CCA Bosch brand battery at Pep Boys for it for around $100 and it cranks great even when parked in a 20 degree garage.

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Marty D.

2013 C300 4Matic
1984 BMW 733i
2013 Lincoln MKz