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HP Tower G4
Complete replacement battery kits for HP Tower G4 UPS: new sealed lead-acid AGM (VRLA) batteries, tested and ready to install with the original connectors. Each kit shows the HP spare battery part number it replaces.
Batteries for HP Tower G4 UPS
Why replace the batteries?
- A sealed lead-acid (AGM / VRLA) UPS battery gradually loses capacity, especially in a warm room: its real service life is generally 3 to 5 years.
- Worn batteries greatly reduce runtime, trigger the « battery » alarm and can make the UPS shut down at the very first power cut, exactly when you need it.
- Replacing the batteries restores your UPS's original protection for a fraction of the price of a new UPS.
How to find the right kit?
- Note the HP part number of your UPS on the rating label (on the back or underneath): for example « Q1F52A », « J2R04A », « AF468A » or, for a Compaq, « 242688-002 ». The model name (T1500 G5, R/T3000 G4…) is also on the front panel.
- You can also note the HP spare battery number printed on the battery pack (for example « 796777-001 »): it appears in the name of our kits.
- Compare it with the table below: each kit includes all the batteries of the UPS, in the same format and with the same terminals.
- If in doubt, open the battery compartment and note the number of batteries, their voltage and capacity (for example 12 V 9 Ah), or send us a photo of the UPS and its batteries: we will tell you the right kit.
Available kits
| Model | Internal batteries | HP spare battery | Kit contents |
|---|---|---|---|
| HP T750 G4 (J2P88A) | 2 x 12 V 7 Ah | 765781-001 | 2 x NP1272F2 (12 V 7.2 Ah) |
| HP T1000 G4 (J2P89A) | 2 x 12 V 9 Ah | 796779-001 | 2 x HR1234WF2 (12 V 9 Ah) |
| HP T1500 G4 (J2P90A) | 3 x 12 V 9 Ah | 796780-001 | 3 x HR1234WF2 (12 V 9 Ah) |
Replacement tips
- Always replace all the batteries at the same time: a new battery combined with worn ones wears out very quickly.
- Switch off and unplug the UPS before working on it (except hot-swap models, according to the manual).
- Reuse the original cables, links and connectors and respect the polarity (red = +, black = −).
- Let the UPS fully recharge (about 8 hours) before relying on the runtime, then run a battery test.
- Used batteries must be taken to a collection point: they are recycled.