Which battery is best for UPS?

[roboxx]

Aoa. I have an APC 1000VA UPS with 2 AGS 85AH batteries which are now to be replaced with new batteries. I'm researching on Daewoo Deep Cycle Battery (they're low maintenance and good quality) and Phoenix Tall Tubular battery (with prolonged lifespan and efficiency). Both provide 1year warranty.
Kindly anyone guide which batteries should I buy.

[nfssaad]

i have used both these brands.

phoenix hands down is much better. currently have tx2500, for the past 2 years

daewoo gave out after 1.5 years

[roboxx]

You have non-solar simple UPS? Which capacity UPS?

[nfssaad]

i am using a pure sine wave inverter, which has solar option, but i am not using the solar option.

in case of daewoo, i was using SAKO simple ups.

the issue is to check the charging voltage of the ups. is it overcharging the battery?

also must avoid deep discharging the battery.

[roboxx]

I'm using APC UPS which is pure sinewave. Now the question is if I go for Phoenix tubular battery, the calibration of APC UPS is different for Tubular battery?

[nfssaad]

it depends on your ups. does it have separate setting for different battery types?

my inverter has option of selecting battery type. either lead acid, agm, lithium, and also has setting for float charge, bulk charge voltages.

phoenix battery came with a small table defining what voltages to set

[margallar]

did you check the date of manufacture and voltage at time of purchase?

did the daewoo have electrolyte from the factory?

i am genuinely curious because i was expecting better from daewoo

i did see a charging voltage table on their website when i was buying one for my car

[roboxx]

Like this

But I don't know how to calibrate the APC UPS.

[nfssaad]

yes. looked at everything and bought from main supplier at the time. daewoo was not common in market then

[nfssaad]

what model ups is it?

[nfssaad]

deep cycle, tubular, come ready to use, filled with electrolyte

[roboxx]

It's APC 1000VA pure sine wave UPS. They come as refurbished and reprogrammed and modified for use as household UPS. I bought it in 2012.

Like this.

[nfssaad]

what you can do is measure the output charging voltage of this ups.

if it matches the battery requirements, you can use it

[roboxx]

I went to an APC dealer/workshop who also deals in different kind of batteries. I purchased DIB-110 Daewoo batteries as they advised. And they did the Reprogramming of my APC UPS according to the new batteries. Now it's working fine.

[OgRe1985]

Which ups is best to buy now a days? Where to buy APC ups in Lahore?

[roboxx]

APC UPS are reliable. I'm using one from last 12 years.
Inverex, Homage are also reliable.

[pwuser162557941033]

I purchased a SIMTEK Pure Sine Wave UPS that is manufactured locally. Black chassis, called 6+6 or 4+4 ("chaar pankhe, chaar laiet") with a fake VA rating, comes in 12V and 24V versions. The owner has told me quite straightforwardly that their 1500VA UPS is actually only 800W capable, rated deceptively so that people buy it and it actually sells.

They've made it clear that lying is necessary to succeed in the marketplace, because everyone's lying anyway, so I lol'ed and bought it because of his honesty.

Have not tested the efficiency, or whether it is capable of its rated maximum output.

It does output a pure sine wave, though, and seems to charge the attached battery correctly - 15A bulk current, 14.7V until absorption stage ends (timed based on length of bulk stage, according to them) and 13.8V floating until the next time a charge cycle is triggered by mains loss.

I've been using it for 2 years, and it works fine. Battery cables are decent quality with properly crimped lugs, has a 92mm fan, and a large transformer that makes up most of its weight. Blue backlit display shows percentage values for battery state of charge (voltage-based only, sags under load) and inverter load.

[roboxx]

Most of the locally made UPS are with fake rating.