On Mar 16, 5:58�am, "Joseph Meehan"
wrote:
� � Normal variance.

--
Joseph Meehan

�Dia 's Muire duit

"---MIKE---" wrote in message

...



I have two car type batteries that I have in my basement. �One is to
start my generator and the other is a spare. �I charge them once a week
at 1.5A for three hours. �I check the voltage before charging. �One of
them usually reads 12.60 volts and the other 12.76 volts. �I checked the
acid level on the 12.76 volt one and it is OK. �Why would it read so
high?

� � � � � � � � �---MIKE---
In the White Mountains of New Hampshire
(44� 15' �N - Elevation 1580')- Hide quoted text -

- Show quoted text -

altough they are all lead acid, resting voltages vary a little
depending on what chemical besides lead were used. car batteries are
actuall complex designs.

the more important question is what are their load test voltage, after
500 amps at 30 seconds.

lead acid batteries have a realtively short but robust life.