I need a DC power supply, bigger than what I've got. Any reason why I can't connect two automobile battery chargers in parallel to suply the same vehicle?
Let's say one puts out 13.8 volts and the other 14.2. Is the first one really going to be a load on the second?
What happens if they are both connected to a discharged lead acid battery that's now putting out 4 or 8 volts**? Won't that lower the voltage of the 14.2 charger to where it's not backcharging the 13.8 charger? And won't the battery charge at rate of the sum of the two chargers, 2 (or 10) amps and 10 amps?
**Or if they are both connected to motor scooter whose starter motor is engaged.A separate question: The charger I'm using now has 2 amp and 10 amp settings. It was on 2 amps, to charge a sealed burglar alarm style lead acid gel battery, used in place of a motorcycle battery in a motorscooter I'm working on. When I pressed the starter button to electrically crank the engine, the ammeter on the charger went immediately all the way to the right, 10 amps or more. But it was not enough to crank the engine. It made an effort, a little noise, and stopped immediately.
Given the way chargers are usually wire, will setting the charger on
10 amps provide more starting power than setting it on 2 amps? I would have assumed the answer was yes, but the ammeter went to 10 amps even in the 2 amp setting.And before anyone brings it up, I've been testing the kick starter too, and the ignition and fuel systems. I'm making mulitples tests, in order to test all the systems. Before I recommend spending money on a battery and a couple other parts.