Old UPS as car battery charger

**Rolly Talingdan** · September 7th, 2017 12:41 PM

Very good idea. Just be aware that not all UPS uses 12volts dc as supply voltage. When absolutely certain that the UPS has 12 volts dc, your car battery will even charge faster if your 220v ac supply into your wall outlet.

**aioshin** · September 20th, 2017 03:22 PM

Originally Posted by Rolly Talingdan

Very good idea. Just be aware that not all UPS uses 12volts dc as supply voltage. When absolutely certain that the UPS has 12 volts dc, your car battery will even charge faster if your 220v ac supply into your wall outlet.

We should always use a Voltmeter so we are certain that it has 12 VDC or even 14VDC available from the charging terminal of the UPS we are going to re-use.

**Ry_Tower** · September 20th, 2017 05:27 PM

Ok ito ah. Meron ako UPS pa naman. Masubukan nga. Hiram lang ako voltmeter.

**jvnj** · September 20th, 2017 06:11 PM

Originally Posted by Ry_Tower

Ok ito ah. Meron ako UPS pa naman. Masubukan nga. Hiram lang ako voltmeter.

Been using this continuously in our gensets for 27 days already and so far so good. Sulit na!

**Ry_Tower** · September 20th, 2017 06:23 PM

Originally Posted by jvnj

Been using this continuously in our gensets for 27 days already and so far so good. Sulit na!

Good try. Hehe[emoji3]

Sent from my LG-H990 using Tsikot Forums mobile app

**12vdc** · September 20th, 2017 07:29 PM

Ok ito kung patapon na ang UPS. Most of the "not charging" fault ng UPS ay dahil sa battery condition either nag short na or
mababa internal resistance. Most UPS SOHO up to 1kVA are designed for not more than 50aH VRLA batteries. Baka rin masira kaagad tuwing aandar ang ATS starter ng genset dahil malaki ang current demand ng motor.