As wooferhound and ghurd pointed out, one light and fan should not be killing your battery. 12v * 145ah = 1,700watt/hr USP are not efficient lightly loaded, my 3kw unit draws 50w no load, your battery should run it for hours and hours...
So what is the wattage of the light and Fan? What model UPS? (need its specifications)
Have fun, Scott.
They gave away the UPS (to me) thinking it was no good. I spent $100 putting two big sla's in it and it worked fine at home for years after backing up my personal computer and ink-jet printer. It was a 1300 va Best Fortress that in a former life backed up an AS400 in the front office. [ Parent ]
The specification of the UPS i can't ever get for you because its locally made and sold heere in the market without any details of it. No mention of what type batterries we should attched to it. Everyone uses wet batteries because deep cycle ones are really expensive here and old stuff that has been in the shelves for years. Even if i do buy it, it won't run for more than a year or at most two. So in that cost i can get 3 wet batterries of the same amperage and run them for 3-4 years easily.
The UPS is 600watts and it can run 4 fans and 4 tubelights. Each fan is 80w and each tubelight is 40w. That is what the UPS was made for, it did give me 1 and half hours of backup for 3 fans and a light when the battery was new, but its just year old and the backup is so low. I know that it won't be able to charge again this early because as i told you all that electricity goes for 2 hours 3 times a day. So i can se why the less backup, but the amazing thing is that the UPS says the battery is fully charged and still the same backup. At most when fully charged it gives me 1 hour backup for 2 fans and then i have to close one fan and it run for half an hour more, and with it two small energy saver bulbs of 11w each.
The UPS is on 12v, 600w output. Its also eating up my electricity bill because its always on charging with minimum or no efficiency at all. The only problem i can see is that the battery is fine but the UPS's own efficiency is not giving the backup. The same battery as you all rightly mentioned give 4 hours of backup if attached to a normal 650va, 390w APC or PCM UPS which i have. But those are just 400w and the problem is that the built in charger takes 4-6 hours just to charge a 7AH battery how will it charge the 145ah battery and give results.
The UPS business is hot here because of the electricity problem and the prices are sky high and quality very very low. The things that are being imported here are c grade chinese ups. That you all will call junk. But due to monopoly and the cost of working here people are not ready to import the good stuff because they won't be able to sell it.
I myself imported good quality UPS for computers about 2 years ago and the problems i faced only i know, the junk was being sold like cakes and even if i presented my good quality UPS to them they were not ready to buy from me at my cost price even becuase of the cut they got from the other suppliers.
As for the "free" battery part, Yes free but new.
Yeah atlast we are going to get a new President, hope things work out now but really can't hope too much.
I think i have cleared many points i could, now please can anyone help. I thought of changing the UPS too but the next one will be same too as only those are available here and i don't have more money for a new one again. All i can do is work with the things i have, also trying to build a wind turbine hope it gets ready and works well just to charge the battery and atleast save me from the charges of the UPS's charger eating up my bills.
Thanks in advance to all of you.[ Parent ]
The 600w UPS can charge fast. (Seems to). Problem:
My APC 1000w supports changing the batteries while in operation, have tested to verify.
Not the greatest solution, may work for your situation.
Have fun, Scott. [ Parent ]
Problems in Pakistan are always unique : ), coming back to serious point.
The solution you told me can be done but i can't just keep switching things from here to there all day 3 times. I am not home most of the time and my family can't do that.
Yes the 600w locally made UPS charges very fast, even if electricity goes 3 times for 2 hours it seems to give same backup everytime. My APC 1000w is not supporting the big wet battery, starts beeping when connected to it. Should i put thick wires in the PCB for battery? maybe the thin wires are not supporting the 145AH battery?[ Parent ]
You might be able to do something like that with relays.
AGS is a battery manufacture, they specialize in SLA type used in UPS. Should work if connected correctly to APC UPS. I connected a flooded Lead Acid battery and it worked.
If not then more information will be necessary to figure out why. Battery voltage when connected, How doe the newer ones work with it ect. Many more.
