I'm trying to recommend an UPS for a non profit that I support.  Their current UPS is a Cyberpower CP1500AVRLCDa which is a total POS. (1500VA, 900W, 24V Battery).  I've read that this particular model reports the battery as good even when it isn't, which seems to be the case for me. (I monitor it remotely and the server goes off during power outages that last seconds).

 

I've read that Eaton are the best UPS.  From my research they seem to be good so I looked up all the 1500VA models that do 1350W.  Two include network modules which make them more expensive, I'm going to recommend those two and then throw in some cheaper non network models (still have USB).  

 

My main questions are, there is a Lithium Ion battery model, it's the most expensive.  Should I even bother with that?  Any benefit to Lithium Ion?

 

Of the rest of the models, there are 36V and 48V batteries, obviously the 48V are more expensive, but either is going to be an upgrade over the current 24V in the Cyberpower.

 

36V battery:

SMART1500RM2U 1500VA, 1350W, Line-Interactive, Lead Acid 36V Battery, Rackmount, $758
SM1500RMXL2UTAA 1500VA, 1350W, Line-Interactive, Lead Acid 36V Battery, Rackmount, $827
SMART1500RM2UN 1500VA, 1350W, Line-Interactive, Lead Acid 36V Battery, Rackmount, $1114, Network

 

48V battery:

SU1500XLCD 1500VA, 1350W, On-Line, Lead Acid 48V Battery, Tower, $974
SU1500RTXLCD2U 1500VA, 1350W, On-Line, Lead Acid 48V Battery, Rackmount, $1051
SU1500RTXLCD2UTAA 1500VA, 1350W, On-Line, Lead Acid 48V Battery, Rackmount, $1051

SU1500RTXLCDN 1500VA, 1350W, On-Line, Lead Acid 48V Battery, Rackmount, $1403, Network

 

48V Lithium Ion battery:

SMART1500RM2UL 1500VA, 1440W, Line-Interactive, Lithium Ion 48V Battery, Rackmount, $1388

 

Any thoughts on these models?  Unless someone has other opinions, I'm going to recommend the one of the two with network and then the cheapest 36V if they want to save money (although they said money isn't a problem).

 

The server on the UPS is a Dell R730xd with 384gb ECC ram, 7 3.5 HDD, 2 2.5 SSD, 4 NVMe SSD and obviously 2 Xeon processors. According to the CyberPower UPS, it's pulling 350W on average with like 25% CPU load.

Edited March 15, 20251 yr by nerbonne
fixed output wattage

Lithium battery have far more power density then Leadacid battery, almost up to 3x. I also expect Lithium have longer life in general. But it have higher fire risk and no matter what you do.

 

The significant different of above product in fact are the footprint size and overall weight due to different battery use. ( I haven't compare all deeply )

Edited March 15, 20251 yr by Vr2Io

4 minutes ago, Vr2Io said:

Lithium battery have far more power density then Leadacid battery, almost up to 3x. I also expect Lithium have longer life in general. But it have higher fire risk and no matter what you do.

 

The significant different of above product in fact are the footprint size and overall weight. ( I haven't compare all deeply )

Yes the Lithium Ion battery model does 1440W vs the 1350W of the others.  Longer life seems good since this is a remote site but higher risk of fire sounds terrible.  Hmm...

Yes, so hard to select.

 

PS : I DIY use Lithium currentlly and limit charge the battery in ~80% ..... this make me think safe more but who know

Edited March 15, 20251 yr by Vr2Io