kobre98
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hi all,
I want to make a car battery charger that can charge a 12v-110Amp battery
usually this is done using a transformer and some circuitry that can give 12 volt with 20-30 amp
but it cost a lot.
so my question here is
why not using the computer power supply which provide 12 volt with 30 amp and cost a lot less that using a transformer !?
is this possible or not and if not then why ?! it seems reasonable to me that both give the same volt and almost the same amp so they must do the same job
i.e charging the car battery !
does anyone have any clue
thanks a lot guys for your help
now, what I need to know is if I adjust the voltage coming out of the power supply to 13.4 or 13.8 instead of 12
and connect it to the car battery.
is it going to charge it or not
and in a very simple manner plz explain to me why the power supply after modification to give 13.4 volt at 33 amp isn't considered a decent charger ?!!
if u have the required voltage and ampere what could go wrong and in what way it might affect the battery life ?!
Your charger greatly affect to life of your battery; hence it is better to have a good charger.
Followings is about general specifications of those battery charging;
https://www.powerstream.com/SLA.htm
Following has circuits for chargers;
https://www.aaroncake.net/circuits/charger2.asp
https://www.circuitstoday.com/lead-acid-battery-charger
Also if you have a power regulator that can adjust voltage and current, it also can use as a charger.
thanks a lot guys for your help
now, what I need to know is if I adjust the voltage coming out of the power supply to 13.4 or 13.8 instead of 12
and connect it to the car battery.
is it going to charge it or not
and in a very simple manner plz explain to me why the power supply after modification to give 13.4 volt at 33 amp isn't considered a decent charger ?!!
if u have the required voltage and ampere what could go wrong and in what way it might affect the battery life ?!
hi
may anyone post simple circuit to change 12v to 13.8v or high volt like dc\dc converter (using diode and coil....).
Well i modify the computer power supply and now it gives 13.8-14.2 volt but the problem is till there!it is not charging the battery just only few milliampere! plz help any idea!
If you are connecting discharged battery and it is not taking the current it may be limiting the current check that.
thanks
But apparently, the power supply does not give13.8V when a load is connected.Well i modify the computer power supply and now it gives 13.8-14.2 volt
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