battery fighter (charger)

These chargers are designed for small batterys like the ones used in alarms and other 12 volt small current draw applications.

More suited for 12 volt batterys up to 20 amps.

They will keep a car battery charged if the vehicle has not be used for a while.

There are a true 3 stage.

You would be better off buying a Ctek 7 or 15 amps charger.

We use a Ctek 25 amp for the camper trailer, can be used as a charger and when the battery is full it will float, also it can be used as a25 amp power supply.

The down side to the charger you just got is if the battery is down it will be working very hard to charge the battery up,you might find it has a timer built in to to stop charging to bigger batterys.

We also have a Redarc 5 amp battery charge for charging car batterys and that will turn itself off after about 12 hours of charging.

>1) am I right in thinking it would take 4 hours to put 3 amps into my battery?

Yes.

What you have bought is really a maintenance charger for a battery which is already close to full charge and will be left sitting for a period of time - the charger has little other use. For $20 it's a good buy.

Mike Harding