Description
Phoenix Contact UNO-UPS/24DC/24DC/60W Battery Replacement Set (2905907 Compatible)
If your Phoenix Contact UNO-UPS/24DC/24DC/60W (Order No. 2905907) no longer delivers the backup runtime you expect, battery aging is usually the reason. That’s why this compatible replacement battery set helps restore dependable 24V DC ride-through power during short outages, brownouts, and supply interruptions. Set of 2 12 Volt batteries with JST connector.
In addition, the UNO-UPS/24DC/24DC/60W is a space-saving DIN-rail UPS that uses an integrated battery with lead AGM / VRLA technology in a 24V DC system format. Because of that, it uses a 2-battery set (two batteries in series to create a 24V battery string).
Reference: Phoenix Contact describes this UPS with an integrated battery, lead AGM/VRLA technology, and a 24V DC battery system with 2x 0.8 Ah.
Confirm Correct Fit Before Ordering (Important)
Before you buy, verify these details so you get the correct replacement set:
- UPS model must match: UNO-UPS/24DC/24DC/60W
- Order number: 2905907
- Battery set format: Requires two batteries per UPS (matched set)
- Chemistry: Sealed lead AGM / VRLA (match the UPS integrated battery type)
- Terminals / connector: Compare your battery terminal style/fitment before ordering
What’s Included
Specifically, this listing includes:
- (2) Compatible replacement batteries for one UPS (UNO-UPS/24DC/24DC/60W)
Typical Applications (Where This UPS Is Used)
This product supports a DIN-rail industrial UPS. For example, many users install it to back up 24V DC control power in:
- Industrial automation panels (PLC, relays, I/O)
- Process control and instrumentation
- Security, access control, and monitoring equipment
- Network/communications equipment that runs on 24V DC
- Other critical 24V DC devices that need short ride-through support
Battery / UPS Reference Specs (For Search & Cross-Checking)
To help you double-check, here are common reference identifiers:
- UPS: Phoenix Contact UNO-UPS/24DC/24DC/60W
- Order No.: 2905907
- Technology: Integrated battery, lead AGM / VRLA
- System voltage: 24V DC battery system (2-battery set)
- Battery rating listed: 2x 0.8 Ah
Why Buy a Matched 2-Battery Set?
In a 24V UPS that uses two batteries in series, replacing only one battery often causes uneven performance and shorter runtime. As a result, a matched replacement set helps keep the battery string balanced and restores more consistent buffering performance.
Tip: If you’re unsure, send a photo of your UPS label and the internal battery/terminal style. That way, you can confirm compatibility before ordering.
Important clarification: The UNO-UPS/24DC/24DC/60W is primarily an industrial DIN-rail UPS for 24V DC control power systems—not a standard “exit sign battery pack.”
However, you may see it installed in control panels or DC systems that support building equipment (including some emergency lighting controllers or centralized DC equipment) when those systems run on 24V DC. On the other hand, if you have a traditional exit sign or emergency light fixture with a small battery pack and lamp/driver, this is usually not the correct product.
Frequently Asked Questions (FAQ)
Is this for the Phoenix Contact UNO-UPS/24DC/24DC/60W (2905907)?
Yes. In short, this page is for a compatible replacement battery set for the Phoenix Contact UNO-UPS/24DC/24DC/60W, Order No. 2905907.
How many batteries are needed for one UPS?
The UNO-UPS/24DC/24DC/60W uses a 2-battery set. Therefore, this listing includes the set needed to service one unit.
What battery type does this UPS use?
Phoenix Contact specifies an integrated battery using lead AGM / VRLA technology for this UPS model.
My UPS runs but the runtime is short—does replacing the batteries usually fix it?
In many cases, yes. For instance, battery aging often reduces ride-through time. So replacing both batteries as a matched set helps restore consistent performance.
How do I confirm this is the correct replacement?
First, match the UPS model and order number on the label (UNO-UPS/24DC/24DC/60W, 2905907). Next, compare terminal/fitment inside the unit.
Information Gain: How to Verify You’re Ordering the Right UNO-UPS Battery Set
- First, check the label: Confirm your UPS is UNO-UPS/24DC/24DC/60W and/or Order No. 2905907.
- Next, confirm the battery system: This model uses a 2-battery series set (24V string).
- Then, match chemistry type: The UPS uses lead AGM / VRLA internal energy storage.
- After that, compare fitment: Verify terminal style and physical fit before ordering.
- Finally, if unsure: Send a photo of the label and battery compartment for a quick compatibility check.
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