12v battery protection diode
I already tried the circuit whose provided by KOKY, which using Diode 1N4007. For your info, I changed the diode from 1N4007 to 1N4001. This circuit is worked only without any load. But when I switched on my computer, the UPS indicated Baterry Low and my computer straight away shuting down.
So, is it because of the diode that I'm using? I changed the diode from 1N4007 to 1N4001 is because accordinh to thesalesman, the 1N4007 is just capable to 400V 1A, but 1N4001 its can reache 600V 1A.
Hope to hear from you all soon.