Maintaining UPS/car batteries

[talhawaleed]

Itni jaldi drum khatam bhi ho gaya :o

Yes, you may need two of these to fill two pheonic 220 batteries.

[talhawaleed]

would water from purification plant work?

I will still recommend distilled water, I experimented it with filtered water but again backup time was down in 15 days. I had to flush the batteries and fill new electrolyte in-order to recover the backup time.

Depends how well the water is filtered but anyway we want mineral free water, no impurities etc.

P.S: its water anyway we top up the batteries with but we want it in most purified form and best purification methods known to humans is distillation.

[mfdarvesh]

mfdarvesh

I cant exactly tell you the name as every shop keeper has put his own name on UPS. They have simple generic casings where all other components are attached separately such as Inverter, Transformer, UPS cards and it looks like this.

Look for 2000Watt UPS and attach two batteries of Pheonix 220 and rest you can run your entire house on this UPS which will include two lights and a fan for every room.

P.S: let these batteries guys laugh as all they care is that your batteries dies quickly so you have to buy a new one.

Thanks brother

The Option for UPS was Ecostar, pure sign wave having capacity of 1000 Watts output. Its power factor is 0.8 and this UPS was 1.2 KVA. I like this UPS very much but its retail price was Rs 20,000 - 21,000.

So I opted for CyberPower, it is modified sign wave and has 640 Watts output, good enough for 3 fans and 7 CFLs and also it has replace warranty instead of normal repair warranty.

For batteries, I have ordered Phoenix XP 175, these batteries are short in these days so a guy will arrange one for me with special discount.

[qwertypoiu]

My AGS battries have lasted 3 years and still going strong and on the other hand Exide last 1 year hardly. What could be the reason? Yes ups are different but how does it make this much difference..

Sent from my A8 using PakWheels Forums mobile app

[faizanahmad]

I am surprised that PRYOCHEM is selling electrolyte in 30kg drum, then it must be of goof quality. This seems like a cheaper option to buy 30kg prepared electrolyte for Rs 650. Can you please tell us where can other users buy this product from. Your reply will help many and off-course batteries will last longer with this electrolyte. did you check the gravity??? what was it

Yes i checked the gravity and it was exact 1250 on gravity meter. I ordered it from their office in Bank square market model town Lahore and they delivered it the next day.

[talhawaleed]

My AGS battries have lasted 3 years and still going strong and on the other hand Exide last 1 year hardly. What could be the reason? Yes ups are different but how does it make this much difference..

Sent from my A8 using PakWheels Forums mobile app

Bad adjustments on UPS, wrong cutoff Voltages , wrong charging rates, battery filled with dirty electrolyte all can contribute.

UPS manufacturer does not knows sort of battery you will attach for backup, frequency of load shedding in your area which we know, like slow charging may not even prepare the batteries for next load shedding and result is that batteries will die earlier due to sulfation or very high charging rate which defies the given formula for maximum charging rate such as AMP-HR rating/10 = ?? maximum current. All these factors does affect. battery already achieved its cutoff but UPS simply does not stops charging the battery or cutoff set to a lower limit such as battery is not able to charge its self fully.

[talhawaleed]

Thanks brother

The Option for UPS was Ecostar, pure sign wave having capacity of 1000 Watts output. Its power factor is 0.8 and this UPS was 1.2 KVA. I like this UPS very much but its retail price was Rs 20,000 - 21,000.

So I opted for CyberPower, it is modified sign wave and has 640 Watts output, good enough for 3 fans and 7 CFLs and also it has replace warranty instead of normal repair warranty.

For batteries, I have ordered Phoenix XP 175, these batteries are short in these days so a guy will arrange one for me with special discount.

seems fine, as far as you know how much backup time you are looking forward to.

[faizanahmad]

Bad adjustments on UPS, wrong cutoff Voltages , wrong charging rates, battery filled with dirty electrolyte all can contribute.

UPS manufacturer does not knows sort of battery you will attach for backup, frequency of load shedding in your area which we know, like slow charging may not even prepare the batteries for next load shedding and result is that batteries will die earlier due to sulfation or very high charging rate which defies the given formula for maximum charging rate such as AMP-HR rating/10 = ?? maximum current. All these factors does affect. battery already achieved its cutoff but UPS simply does not stops charging the battery or cutoff set to a lower limit such as battery is not able to charge its self fully.

is there any formula for slow charging rate?

[HassanS]

and how do i fill up the water? Do i have to turn off the ups or something? Is it dangerous? Any risks of electric shock?

[whiteangel]

and how do i fill up the water? Do i have to turn off the ups or something? Is it dangerous? Any risks of electric shock?

As long as you're not filling the battery while taking a shower, I think you have nothing to worry about

Just open the battery vent caps and fill with distilled water up to the maximum mark indicated on the battery case.

[Sdogar]

Dear talha,

I have an aurora UPS 1000 VA, i checked the charging voltage by it and it was 3.6 Amperes, my battery is of 185 AH, AGS. Is this charging volatge correct ? In discharging state the battery shows 12A discharge rate.There is loadshedding of one hour after every hour(12 hour loadshedding in 24 hours).I use generator in day time for 3-4 hours but the state of charge on UPS display never shows it to be full.My questions :

1. Is this charging rate OK (3-4 Amperes)?
2. If not OK, then how can the charging rate be increased as the UPS has no adjustment option.
   3.Is it not good for battery to remain in charging state of 40-80% ???(no full charging and no deep discharge,UPS manual mentions deep discharge protection)

[whiteangel]

I also have two Aurora UPS and yes the charging rate is slow. It varies between 2 Amps to 10 Amps depending on the charge status of the battery. If the battery remains on low charge it leads to sulphation of the plates which will reduce backup time.

You cannot adjust the charging rate.

I bought an external 20Amp automatic charger yesterday. I will use that to charge the battery fully and then reconnect it to the UPS. In the meantime, I will shift all load to the first UPS.

[talhawaleed]

is there any formula for slow charging rate?

Well, AMP-HR rating/15, AMP-HR rating/18, AMP-HR rating/20, AMP-HR rating/25 can be termed as slow charging.

[talhawaleed]

and how do i fill up the water? Do i have to turn off the ups or something? Is it dangerous? Any risks of electric shock?

NO, you can fill distilled water even if batteries are charging or discharging. Don’t over flow the batteries, otherwise you should be ok as we do it all the time and never experience any issues.

[talhawaleed]

Dear talha,

I have an aurora UPS 1000 VA, i checked the charging voltage by it and it was 3.6 Amperes, my battery is of 185 AH, AGS. Is this charging volatge correct ? In discharging state the battery shows 12A discharge rate.There is loadshedding of one hour after every hour(12 hour loadshedding in 24 hours).I use generator in day time for 3-4 hours but the state of charge on UPS display never shows it to be full.My questions :

1. Is this charging rate OK (3-4 Amperes)?
2. If not OK, then how can the charging rate be increased as the UPS has no adjustment option.
3.Is it not good for battery to remain in charging state of 40-80% ???(no full charging and no deep discharge,UPS manual mentions deep discharge protection)

1. No, charging rate is way too less for 185 AMP-HR battery and whiteangle said that you cannot even adjust it on this UPS. Under current circumstance where load shedding occurs after every hour, its not ok at all. Yes if you live in an area where load shedding occurs once or twice a day then its ok.
2. Why not full charging, what are they trying to protect the batteries from. Check the manual carefully to see which batteries have they designed the UPS for.

[talhawaleed]

I also have two Aurora UPS and yes the charging rate is slow. It varies between 2 Amps to 10 Amps depending on the charge status of the battery. If the battery remains on low charge it leads to sulphation of the plates which will reduce backup time.

You cannot adjust the charging rate.

I bought an external 20Amp automatic charger yesterday. I will use that to charge the battery fully and then reconnect it to the UPS. In the meantime, I will shift all load to the first UPS.

Its ok, that you have bought the external charger but my UPS is a local one so I can easily adjust the charging rate so don’t feel the need for an external charger. Even if I have to charge the car batteries then I attach it in parallel configuration and same UPS does a good job.

[whiteangel]

Its ok, that you have bought the external charger but my UPS is a local one so I can easily adjust the charging rate so don’t feel the need for an external charger. Even if I have to charge the car batteries then I attach it in parallel configuration and same UPS does a good job.

Yes the local UPS has an advantage there.

This morning I was checking the charging current of the Aurora UPS and it was showing 17Amps. This was when the battery was in a discharged state. So I guess this UPS is capable of charging the battery at a higher current, but somehow it does not do that very often. Most of the time it is charging between 5-10AMPS. So I guess it depends on the charging algorithm that the UPS uses.

Anyway, I have purchased an external charger now and it seems to be doing a good job. It is a Chinese make and it cost me Rs. 2500. Maximum charging current as stated in the manual is 20Amps, but when I checked with a multimeter it shows between 17-18Amps max. It has a nice analog display which shows the charging amps and they can be adjusted by turning a knob, so that is very handy. Other than that it has a cooling fan, and the manual says it is an automatic charger, so even if you set the knob to 20Amps, as the battery keeps charging, it drops the current automatically. The manual says it has a three and four stage automatic charging circuit, although I don't see any indication on the charger which tells you if is using the three stage or the four stage charging mode.

I have a query...

If I am charging a completely discharged 200AH battery at a charging rate of 20AMPS then it would take 10 hours to completely charge the battery. Am I right?

[talhawaleed]

Yes the local UPS has an advantage there.

This morning I was checking the charging current of the Aurora UPS and it was showing 17Amps. This was when the battery was in a discharged state. So I guess this UPS is capable of charging the battery at a higher current, but somehow it does not do that very often. Most of the time it is charging between 5-10AMPS. So I guess it depends on the charging algorithm that the UPS uses.

Anyway, I have purchased an external charger now and it seems to be doing a good job. It is a Chinese make and it cost me Rs. 2500. Maximum charging current as stated in the manual is 20Amps, but when I checked with a multimeter it shows between 17-18Amps max. It has a nice analog display which shows the charging amps and they can be adjusted by turning a knob, so that is very handy. Other than that it has a cooling fan, and the manual says it is an automatic charger, so even if you set the knob to 20Amps, as the battery keeps charging, it drops the current automatically. The manual says it has a three and four stage automatic charging circuit, although I don't see any indication on the charger which tells you if is using the three stage or the four stage charging mode.

I have a query...

If I am charging a completely discharged 200AH battery at a charging rate of 20AMPS then it would take 10 hours to completely charge the battery. Am I right?

I don?t exactly remember the formula but will try to look for it. No it should be able to charge the battery in maximum 2 hours. Keep an eye on cutoff Voltage.

[Sdogar]

Yes the local UPS has an advantage there.

This morning I was checking the charging current of the Aurora UPS and it was showing 17Amps. This was when the battery was in a discharged state. So I guess this UPS is capable of charging the battery at a higher current, but somehow it does not do that very often. Most of the time it is charging between 5-10AMPS. So I guess it depends on the charging algorithm that the UPS uses.

Anyway, I have purchased an external charger now and it seems to be doing a good job. It is a Chinese make and it cost me Rs. 2500. Maximum charging current as stated in the manual is 20Amps, but when I checked with a multimeter it shows between 17-18Amps max. It has a nice analog display which shows the charging amps and they can be adjusted by turning a knob, so that is very handy. Other than that it has a cooling fan, and the manual says it is an automatic charger, so even if you set the knob to 20Amps, as the battery keeps charging, it drops the current automatically. The manual says it has a three and four stage automatic charging circuit, although I don't see any indication on the charger which tells you if is using the three stage or the four stage charging mode.

I have a query...

If I am charging a completely discharged 200AH battery at a charging rate of 20AMPS then it would take 10 hours to completely charge the battery. Am I right?

If that is the case that it charges at different rates at different times then that is excellent because the best charging for a battery is 3 stage charging, 1. When it is discharged , it will charge at higher rate, then after 90%, it will slow down and on 100, it will charge at a different rate to maintain the charge, if that is the case with aurora, then that is nice.

[HellsGuardian]

@talhawaleed

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