Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations Chriss Miller on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. mdwittler

    UPS Testing

    Hi there, thanks for that. Just wondered how you get 28A? if the two batteries are 17Ah, then you 'add' them as you say 17+17= 34A not 28A ? Anyway that more or less sorts out my question- many thanks for your assistance.
  2. mdwittler

    UPS Testing

    Thanks a lot Kurtheurer, it has been some time since I posted the question and in the absence of a final answer I haven't yet performed any testing on the UPS's - your answer sorts that out! Just a quick (long) question!- My car battery charger (which I would use to charge the UPS's batteries)...
  3. mdwittler

    UPS Testing

    Thanks toolman18 for the link. It was actually a link on that site which has helped me a bit. Firstly though, I don't comprehend why the batteries are charged at 110vac? This is a quote from a website about lead-acid batteries (although not specifically UPS ones). "Chargers: Most garage and...
  4. mdwittler

    UPS Testing

    Thanks for that, when you say 110vac---how can a 12v 7ah or 17ah battery be charged with such a large current 'alternating current'? <--That question may sound rather dumb [ponder] ?????! For example I've seen a 12v 'leasure/GEL battery charger' which appeals (to me at least) as sutiable for...
  5. mdwittler

    UPS Testing

    Hi there, I'm in practically the same situation as you! Except all my UPS's are APC, and I've only got 1 out of 10 to work! From what I've noticed during my 'experiments' with them - is that they only turn on (with the power plugged in) if they have a GOOD FULLY WORKING BATTERY IN THEM! So...

Part and Inventory Search

Back
Top