On 6/21/2024 11:13 AM, Randall Smith via KRnet wrote:
I have one of those installed in my thorp T18. I left the master on
and ran it dead. I could not get it to charge on a regular charger
after that.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
I learned the lesson the hard way years ago and it has been re-enforced
with my hours at the battery store. Any (most all) chargers that claim
to be "automatic" will not start charging a "totally dead battery", zero
or less than a volt. The circuitry in the charger needs to recognize
that it is connected to a battery. The best type of charger is a manual
/ automatic combination charger. Start the dead battery on manual
setting then switch to automatic. A plan B for a dead battery with an
automatic charger is to hook up the automatic charger to the battery and
plug it in. At that point simply "jump" the battery with another
battery so the charger turns on and then remove the "jump". The charger
output will remain on to charge the battery once it's output is activated.
Store employees told customers that the battery had to have at least 4
volts to turn on the charger. I questioned that based on personal
observations so I called the manufacturer. They indicated that almost
any voltage would turn on the charger, they just picked 4 volts to be
conservative.
So, totally dead battery, automatic charger, just hook up the charger
and do a momentary jump on the battery. Be advised that each and any
time a battery is drained to near zero volts it's life has been
shortened by some percent.
Larry Flesner
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