4a Power Battery Charger

4a Power Battery Charger
I want to charge a 12V battery using an AC to DC adapter. Do I need to have some sort of charger controller?

It’s a 12V battery, same as the ones used in childrens’ toy cars, ATVs, etc. I’m installing a battery in a machine at my shop that’s used to evacuate fluids. We usually have to clamp the machine to a car battery to power the pump in the machine. It doesn’t need that big of a battery to work. The machine uses 12V, 4A. I don’t know much about charging circuits, but I’ve read that you can just connect an AC to DC adapter and it will only charge at whatever rate that the adapter will output and when the battery is full, it will simply stop pulling current from the adapter. 1) If the battery was drained, could it attempt to draw more current than the adapter can handle and cause the adapter to burn out? 2) Is it true that it will simply stop pulling current once the battery is charged?

get a delco voltage regulator and wire it in plugged in without a switching transistor the batteries will explode or pop.I have done that exact thing. once they are fully charged they will act as direct short/resistance and overheat. i recommend installing a diode in line on – side between battery and- lead with diode wired as such ->I-batt+. This will stop electrons from flowing when + happens at – end of group. I have not tried this so I dont know how it will work I do know the gate should open in the diode and follow the path through the device and not the cells.try and lmk. it is kind of fun to pop batteries anyway but the acid is acid so be careful. A cb radio type power supply 7-10amp will definately be youre best bet.

IMAX B6 charging Stun Power battery with 1C / 2A