Forum Discussion

Naio's avatar
Naio
Explorer II
May 12, 2018

Is a Johnson AGM starting battery fully charged at 12.68v???

Buying a new chassis battery, it took me forever to find somebody who actually had an AGM one in stock, as opposed to just claiming they did. Got it yesterday. Johnson Control, sold under the Dur...
time2roll's avatar
time2roll
Nomad
May 12, 2018
Bosch AGM @ pep boys $150 group 65 Four year free replacement warranty. I believe prorated after that.

Voltage starts higher and drops over 15 to 30 minutes. Depends on engine (alternator) heat afaik.
Alternator charging is fine fine fine. Should last a decade or a bit more.

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