Apr-01-2021 10:57 AM
Apr-02-2021 01:07 PM
Apr-02-2021 01:02 PM
Apr-02-2021 10:32 AM
Apr-02-2021 08:12 AM
time2roll wrote:
Normal. Now put it in a museum and get a modern charger.
Apr-01-2021 05:39 PM
Apr-01-2021 02:30 PM
23hotrodr wrote:
I have an approx. 40 year old 12/6 volt automotive battery charger. When set for 12 volts and not connected to a battery, it reads 12.81 volts. Set to 6 volts and not connected to a battery, it reads 8.1 volts. When I connect to a 12 volt battery, and set for 12 volts and battery fairly well charged I read about 16 volts and the battery starts boiling right away.
Does this seem normal? Should the difference of charger output boltage be that much different when connect to a battery?
Thanks for any info you can provide. -- Mick
Apr-01-2021 02:10 PM
Apr-01-2021 01:20 PM
Apr-01-2021 12:49 PM
Apr-01-2021 12:25 PM
Boon Docker wrote:
I think theoldwizard1 meant to say "should use a timer".
Relax man! :B
Apr-01-2021 12:01 PM
Apr-01-2021 11:53 AM
theoldwizard1 wrote:Gdetrailer wrote:
YES, that is all normal for the old school battery chargers.
Old school chargers (or when using a simple DC power supply) should have a timer. It is very important to make sure the water level is full before starting the charging process.
The boiling is releasing hydrogen which can be explosive in high enough concentrations.
Apr-01-2021 11:51 AM
Apr-01-2021 11:36 AM
Gdetrailer wrote:
YES, that is all normal for the old school battery chargers.
Apr-01-2021 11:36 AM
fourthclassC wrote:Or a known good battery to parallel it with.
I gotta keep an old "dumb" charger around for batteries that are too depleted for my modern smart charger to work.