Originally posted by Bounce
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Earlier this year my daily failed to start. Put it on the CTek that evening and within two hours it said it was okay. Put it back on the car the next morning and it started. That evening it failed to start.
Put it back on the charger and when it reported a full charge I measured the voltage at 12.60V. Disconnected the charger and the next morning I checked the voltage again - it was 11.60V. So it dropped without any load on it at all, which indicated to me that it was time to change it.
I did try the recon program on the CTek, but that didn't help.
I think for maximum battery life you need to keep it constantly above 80% (around 12.45V) to avoid the sulphation, but that is easier said than done for a various reasons.


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