"Larry" wrote

Hmm...Interesting. The only way I know of it making a "voltage spike" is
if it is connected to a battery with an open cell. Batteries absorb the
spikes, normally. It's how they charge...(c;


I think they were talking about higher than normal charger output voltages
in 15+v range that some chargers may put out under certain conditions.

Regarding spikes - Don't we get a "spike" when we turn on the charger?
Instead of say 11.5v, we suddenly have 14.5 or whatever. Anyway, that's
what my voltmeter tells me!

GBM

If the batteries suddenly spike from 11.5V to 14.5V when connected to the
charger, that is an indication that the batteries are worn out. A battery
that is good takes time to discharge and little longer to charge. There
are a lot of variables, such as the size of batteries vs. size of charger.
Generally batteries should be kept above 12.2V, otherwise they have short
life. Thousands of boats have A/B fridge systems (including mine), all
have battery chargers, they work reliably without add'tl equipment.
Lee Haefele
Nauticat 33 Alesto
"GBM" wrote in message
news

"Larry" wrote

Hmm...Interesting. The only way I know of it making a "voltage spike" is
if it is connected to a battery with an open cell. Batteries absorb the
spikes, normally. It's how they charge...(c;


I think they were talking about higher than normal charger output voltages
in 15+v range that some chargers may put out under certain conditions.

Regarding spikes - Don't we get a "spike" when we turn on the charger?
Instead of say 11.5v, we suddenly have 14.5 or whatever. Anyway, that's
what my voltmeter tells me!

GBM