Old automotive battery charger question

Gdetrailer wrote:

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.

:R

NO, not ALL old school chargers have or had "timers".

Perhaps you can point out WHERE the "timer" is on mine?


Click For Full-Size Image.

You can't, because there is no timer knob on the outside..

And NO, there is NO "timer" inside it either.

That IS pretty much the same charger design that my Dad owned since the 1950s, the internals are the same, a transformer, a rectifier, a self reseting breaker, and the one switch for 6/12V, another in the case of mine for deep cycle/regular.. Those just change what secondary "taps" from the transformer are being used which raises or lowers the voltage.

Now if you are thinking of those 150 lb service station chargers on wheels with 150A starting boost then yeah, those often had a "timer" that you turned which would charge only the time you set it to.. But those were COMMERCIAL chargers, not CONSUMER chargers.