Original batteries of these are 8x4Ah in 4s2p configuration. That gives a capacity of 8Ah. I intent to upgrade one of these with 64 LiFePo4 6Ah cells in 16s4p configuration which will give me a capacity of 24Ah, 3 times the original.
should not be done with these low frequency transformer based ups. The transformers waste a lot of energy and heat up a lot. They strategically choose battery capacity and transformer metrial to just have enough battery capacity that runs out before the transformer overheats. If higher capacity battery is installed and the ups is ran at full load for extended time the transformer overheats and the thermal fuse inside it melts. I had bx1100 & upgraded the original 7ah x2 leadacid battery to 12ah 25.6v Lifepo4. At 300w the ups ran fine for 1hour. At 600w the ups ran for 10mins before the transformer overheated and melted. According to apc it should only run for 1min at full load😂. I repaired the transformer and it runs normal but i have made a lower capacity 6ah 25.6v battery for it now. I use the 12ah 25.6v Lifepo4 battery with apc br1000g that i bought used without battery for 20$. It runs 300w load for 45mins which it was originally made to do when using the external battery pack that had 28ah of 24v vrla battery. For 50$ worth of Lifepo4 cells i am more than happy with their performance in these 4 years of use they have not lost any capacity. Lifepo4 upgrade should only be done to ups that uses smps style inverter. Like the br1000g. Those are more efficient and transformers don't melt. Even better if you can get an online ups they would run forever with whatever battery capacity you install.
@@KuntalGhoshthis is able to run with 2700 watts for very long time- it is true that some ups-es are not designed for long term battery use, but it is in the specs. this is smaller industrial ups - you are able to connect on the back external battery packs and run it all day long. you can google it up and you are going to find the similar looking boxes what are fully packed with batteries+ you can connect multiple packs to each other usually- personally i believe for strategic and long term long life use it would need a load balancer(actually datacenters about 10 years ago when they started using smarter pdus -they started to use battery balancer per battery level on the battery units- those are boxes what you just slide in to the serverrack and it connects directly to the busbar of the back- and those servers do not have power supplies , all connects to the busbar and gets 48 volts) - the reason in theory it would need because if 1 battery is dying it impacts all the batteries. but back to your subject-this will not die or burn after 1 hour of working from battery. another thing is what you need to look up is the working type(generally 3 different ups exist) and thisone is constantly working while yours is the type what kicks in in few ms after power goes out- verry big difference is that in that case yours is incative when you have power like bypass, while thisone constantly transforming it to dc and transforming bac in to sinusoidal AC output. also if you will do this research take a look at the efficiency -thisone is 90+% the non online upses usually 60%(look at the VA rating and the W rating)
The original batteries are CSB 1227 so they are 12V 5,5Ah 8 pieces (2serial x 4parallel (1+1 )x4 ) so the original result would be 48V -11Ah ... you are downgrading a bit (10%) and plus prolink batteries are inferior in materials than CSB so basically from 48V-11Ah u went 48V-10Ah ok... a cheap solution i guess
series- it is easy: all accus are 12 volts + the ups works at 48 - you need 4 in series to get that voltage -originally you had 2 series lines of 4 pack in paralel and that gives you also 48 volts but double the amps- and 1 more thing with 2 lines it goes 2 fuses so in case 1 line of battery goes to hell fataly it will still not mean that the ups will be down just half capacity. personally, i think it is really a cheaty way to do this . i mean if you are on a budget and you dont need it to run critical yea but otherwise rebuild the pack normally or if you think that small batteries are expensive and you do this just to have the ups start up then get external batteries and connect it on the back so you have more juice on hand
If it Had 8 12v 5ah Battery's & You Replace it With 4 12v 10ah Battery's You Effectively just Cut The UPS By Half Capacity ! It Should Be 96V Total Not 48v ..It Is In Gimp Mode with Half its Voltage ! Or Am I Just Completely Missing Something ? ? The Voltage Is The Only Thing To Worry About..12v is 12v The AH 5 OR 25 Dont Mater The More The Better !
Battery tray clearly states "48 volt battery". Eight (8) 12V batteries wired series-parallel is 48 volts. Four (4) 12 volt batteries wired in series is 48 volts. He's using four (4) 12 volt batteries with the same AH capacity as two (2) of the 12 volt batteries replaced (well, almost if u look at the vid). PSS
Super helpful with the disconnects so its easy to reverse engineer.
Original batteries of these are 8x4Ah in 4s2p configuration. That gives a capacity of 8Ah. I intent to upgrade one of these with 64 LiFePo4 6Ah cells in 16s4p configuration which will give me a capacity of 24Ah, 3 times the original.
I have 4 x 12V 150Ah batteries inteded to be connected in a 4s config. Will be interesting to see whether this UPS can keep them charged :-D
@@tamastabar5526 It can.
should not be done with these low frequency transformer based ups. The transformers waste a lot of energy and heat up a lot. They strategically choose battery capacity and transformer metrial to just have enough battery capacity that runs out before the transformer overheats. If higher capacity battery is installed and the ups is ran at full load for extended time the transformer overheats and the thermal fuse inside it melts.
I had bx1100 & upgraded the original 7ah x2 leadacid battery to 12ah 25.6v Lifepo4. At 300w the ups ran fine for 1hour. At 600w the ups ran for 10mins before the transformer overheated and melted. According to apc it should only run for 1min at full load😂.
I repaired the transformer and it runs normal but i have made a lower capacity 6ah 25.6v battery for it now. I use the 12ah 25.6v Lifepo4 battery with apc br1000g that i bought used without battery for 20$.
It runs 300w load for 45mins which it was originally made to do when using the external battery pack that had 28ah of 24v vrla battery.
For 50$ worth of Lifepo4 cells i am more than happy with their performance in these 4 years of use they have not lost any capacity.
Lifepo4 upgrade should only be done to ups that uses smps style inverter. Like the br1000g. Those are more efficient and transformers don't melt. Even better if you can get an online ups they would run forever with whatever battery capacity you install.
@@KuntalGhoshI don't need it to run at full load.
@@KuntalGhoshthis is able to run with 2700 watts for very long time- it is true that some ups-es are not designed for long term battery use, but it is in the specs. this is smaller industrial ups - you are able to connect on the back external battery packs and run it all day long. you can google it up and you are going to find the similar looking boxes what are fully packed with batteries+ you can connect multiple packs to each other usually- personally i believe for strategic and long term long life use it would need a load balancer(actually datacenters about 10 years ago when they started using smarter pdus -they started to use battery balancer per battery level on the battery units- those are boxes what you just slide in to the serverrack and it connects directly to the busbar of the back- and those servers do not have power supplies , all connects to the busbar and gets 48 volts) - the reason in theory it would need because if 1 battery is dying it impacts all the batteries. but back to your subject-this will not die or burn after 1 hour of working from battery.
another thing is what you need to look up is the working type(generally 3 different ups exist) and thisone is constantly working while yours is the type what kicks in in few ms after power goes out- verry big difference is that in that case yours is incative when you have power like bypass, while thisone constantly transforming it to dc and transforming bac in to sinusoidal AC output. also if you will do this research take a look at the efficiency -thisone is 90+% the non online upses usually 60%(look at the VA rating and the W rating)
Anyone know if you can do this while it is powered on, as really don't want to have to down any servers if I can help it!
Yes according to the manual you can disconnect the battery pack it is hot swappable
The original batteries are CSB 1227 so they are 12V 5,5Ah 8 pieces (2serial x 4parallel (1+1 )x4 ) so the original result would be 48V -11Ah ... you are downgrading a bit (10%) and plus prolink batteries are inferior in materials than CSB so basically from 48V-11Ah u went 48V-10Ah ok... a cheap solution i guess
How does the voltage work?
The unit is expecting 120V input
The battery string is 8x12V = 96volt ?
hi, mine is a sua3000, never turn of fan, sometimes works quiet and others louder but never turns off fan, is that bad? thanks, rergads!
nice video how much hours can you last on those battery running 500 watts load make i asked
From 35 to 37 minutes with that load
Wow. Doesn't actually show you how to connect the new cells and put them back in
series- it is easy: all accus are 12 volts + the ups works at 48 - you need 4 in series to get that voltage -originally you had 2 series lines of 4 pack in paralel and that gives you also 48 volts but double the amps- and 1 more thing with 2 lines it goes 2 fuses so in case 1 line of battery goes to hell fataly it will still not mean that the ups will be down just half capacity. personally, i think it is really a cheaty way to do this . i mean if you are on a budget and you dont need it to run critical yea but otherwise rebuild the pack normally or if you think that small batteries are expensive and you do this just to have the ups start up then get external batteries and connect it on the back so you have more juice on hand
Very simple useful and effective thank you
Price of single battery?
The music too bad .
Thank you for this video
48volts 10A
yes 48volts 10A battery Prolink
@@mbtechnology134 how much voltage and capacity of each battery?
10A for 12volts
If it Had 8 12v 5ah Battery's & You Replace it With 4 12v 10ah Battery's You Effectively just Cut The UPS By Half Capacity ! It Should Be 96V Total Not 48v ..It Is In Gimp Mode with Half its Voltage ! Or Am I Just Completely Missing Something ? ? The Voltage Is The Only Thing To Worry About..12v is 12v The AH 5 OR 25 Dont Mater The More The Better !
Yes dear
Battery tray clearly states "48 volt battery". Eight (8) 12V batteries wired series-parallel is 48 volts. Four (4) 12 volt batteries wired in series is 48 volts. He's using four (4) 12 volt batteries with the same AH capacity as two (2) of the 12 volt batteries replaced (well, almost if u look at the vid). PSS
No. The 8 are not in series. They are in 4s2p configuration. See my comment.
No UPS would ever work with half the input voltage it needed! ... The fact that it works means its a 48V system.
like 38