Forgot to mention - be sure to get a charger that is intended for use
with sealed batteries! A charger intended for flooded batteries may be
set to too high a voltage, and could damage a sealed battery.
- Jim, KL7CC
On 4/8/2013 8:15 AM, Vic K2VCO wrote:
I know there are those on this list who can help me.
I have a 5 kW generator at my house. It runs automatically once a week
for a half hour to charge the (sealed) battery. The first battery
lasted for about 10 years! The present battery is about 2 years old.
Some months ago, I noticed that it wasn't running. I found the battery
dead. I took the battery back to Batteries Plus where I got it; they
charged it overnight and tested it under load. They said the battery
was OK. When I started the generator and checked the charging voltage,
it was 13.8V which I thought was marginal, so I replaced it.
Yesterday the generator would not start. The battery voltage with no
load was 11.5V. I left it on the charger all day. Then this morning I
checked the voltage and it was 13.5V. The generator started up and the
charging voltage was 14.5V.
Do I have a bad battery?
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