My car's battery got flat and the car doesn't start any more. I have a table top PSU rated for 0-15 V, 3.5 A max and 1.7 A continuous, and would like to use it to let the car start again. The battery is a Varta 540 126 034 rated as 12 V, 40 Ah, 340 A. Car is a Honda Jazz from 2006.
I am aware that just connecting the battery to the PSU and letting them go is not a good idea, because that might overcharge the battery and damage it. However, I don't need to carge it fully, just enough so that I can put it back on the car and let it start. Then the car alternator will take care of the rest. Is this feasible without specialized equipment? I have voltmeters and ampmeters.
Specifically, which voltage should I give it? Which max current? How much time to reasonably have enough charge to start the car, yet be sure that I am not damaging the battery or doing anything risky?