PSI5-10001UBATKIT

Vertiv's Liebert PSI5 datasheet names PSI5-10001UBATKIT as the internal battery kit for the PSI5-1000RM1201UN.

Listed by Vertiv

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What the source says

Vertiv's Liebert PSI5 datasheet names this internal battery kit for this model. The (N) form is the network-card variant of the same kit. Lithium-ion models and external battery cabinets are not covered here. The source doesn't list voltage, chemistry, or connector details.

Source

Liebert PSI5 UPS data sheet
Liebert PSI5 VRLA models named in the Replacement internal battery kits table. The (N) form covers the base model and the network-card variant. Lithium-ion (LI) models are not in this seed. External battery cabinets are not internal kits.
Last checked October 19, 2026.

Other models listed with PSI5-10001UBATKIT

PSI5-1000RM1201U

If a new battery isn't the answer

The warning is still on Common problems Beeping or chirping Triage guide Liebert PSI5 listFamily