Battery options for 2200 (model: SUA2200UXI)

[rajesh.cn_apc]

This was originally posted on APC forums on 12/23/2015

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Hi,

I am in need of longer backup and planning to connect 4 numbers of 100Ah batteries to SUA2200UXI system.

I would like to confirm that this system can take 4 numbers of 100Ah batteries.

If it is not possible to use 100Ah batteries , can I connect 4 numbers of 85Ah batteries?

Regards,

Rajesh CN

[MarkC_apc · Accepted solution]

This was originally posted on APC forums on 12/27/2015

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I have actual experience using a SUA3000RM2U with TWO battery banks of 4-155 AH batteries each, for over 8 hours continuously.  This set up for emergency power only and requires close monitoring of both the UPS (NMC) and batteries (actual voltage and/or specific gravity).  The charging circuit of the UPS is not designed to recharge such a large bank of batteries and the UPS "smarts" will lose track of the battery charge conditions.  This will require that you ignore alarms and to also have an alternate method of charging the batteries.

IMO, these are amazingly robust units and can be utilized with larger battery systems.  However, for use in the services that they were intended (backup power for sensitive electronics), you should use extended run units with properly designed added battery packs and the UPS itself properly configured for the actual number of added battery packs.  This will allow you to confidently leave the system unattended for it's intended purpose.