APC Smart-UPS SRT 48V 1kVA 1.5kVA Battery Pack
PRODUCT DESCRIPTION
APC Smart-UPS SRT 48V 1kVA 1.5kVA Battery Pack (SRT48BP) - 2 Years Local Warranty
Extended Runtime for APC Smart-UPS SRT 1 kVA and 1.5 kVA models
The APC APC Smart-UPS SRT 48V 1kVA 1.5kVA Battery Pack (SRT48BP) is an external battery pack for the APC Smart-UPS On-Line SRT range. It connects to the UPS 48V DC battery bus and extends how long the protected load stays up during a mains failure — the difference between a graceful shutdown and a rack full of servers dropping mid-write. APC's installation guide confirms this pack is used with Smart-UPS SRT 1 kVA and 1.5 kVA models. It is a runtime accessory, not a standalone power source: it has no outlets of its own and must be connected to a compatible SRT UPS.
Connect Up To Ten Packs on One UPS
APC states that the UPS will recognise as many as ten external battery packs. Runtime scales close to linearly with each pack added, so a single SRT can be built out from minutes of autonomy to hours where a site has no generator. Bear in mind that recharge time increases with every pack added — a bank that has been fully discharged takes correspondingly longer to return to full capacity, which matters if your site sees repeated outages in a single storm.
User-Replaceable VRLA Battery Modules
The SRT48BP carries two sealed, maintenance-free, valve-regulated lead-acid (VRLA) battery modules that slide out on handles for replacement, and the replacement cartridge part number is APCRBC155. APC rates the batteries at two to five years of typical service life and recommends replacement at least every five years. In Singapore, ambient temperature is the dominant factor: a pack sitting in an unconditioned comms cupboard will not last as long as one in a cooled server room, so plan cartridge budget accordingly.
Tower Format for Offices and Comms Cupboards
The SRT48BP is the tower build, supplied with stabiliser bracket hardware, and measures 432 mm (H) x 85 mm (W) x 536 mm (D). It suits an SME office, a small comms cupboard or any site without a 19-inch cabinet. Where the installation is racked, the SRT48RMBP rackmount variant is the matching order.
Supplied Locally with GST Invoice
SourceIT supplies the SRT48BP from Singapore with a GST invoice and local warranty support. Ordering the battery pack together with the UPS is usually the sensible approach — it avoids a second delivery and a second rack visit, and lets the whole bank be commissioned and load-tested in one go.
APC SRT48BP Datasheet — Technical Specifications
General
| Part Number (SKU) | SRT48BP |
| Manufacturer Product Name | APC Smart-UPS SRT 48V 1kVA 1.5kVA Battery Pack |
| Brand | APC by Schneider Electric |
| Product Type | External battery pack (extended runtime) for Smart-UPS On-Line SRT |
| Form Factor | Tower |
| GTIN / UPC | 731304298231 |
Battery Specifications
| Nominal Battery Voltage | 48 V DC |
| Battery Type | Sealed, maintenance-free, valve-regulated lead-acid (VRLA) |
| Battery Modules | 2, user-replaceable |
| Replacement Battery Cartridge | APCRBC155 |
| Typical Service Life | 2 to 5 years; APC recommends replacement at least every 5 years |
| Maximum Packs per UPS | Up to 10 recognised by the UPS |
| Compatible UPS Models | Smart-UPS SRT 1 kVA and 1.5 kVA models |
Physical & Environmental
| Dimensions (H x W x D) | 432 mm (H) x 85 mm (W) x 536 mm (D) |
| Net Weight | 31.3 kg (installation guide JGNY-AAY9G9, without packaging); the SRT48BP product datasheet states 29.9 kg |
| Rail Kit / Brackets | Stabiliser bracket hardware included (tower) |
| Operating Temperature | 0 to 40 °C |
| Storage Temperature | -15 to 45 °C |
| Operating Relative Humidity | 0 to 95%, non-condensing |
| Operating Altitude | 0 to 3,000 m (0 to 10,000 ft) |
| Ingress Protection | IP20 |
| Manufacturer Warranty | 3 years UPS electronics / 2 years battery (APC by Schneider Electric) |
| Local Warranty (Singapore) | 2 years, supplied and supported by SourceIT Pte Ltd |
Compatibility & Runtime
Which UPS models does the SRT48BP fit? APC's installation guide specifies this pack for Smart-UPS SRT 1 kVA and 1.5 kVA models. In the SourceIT catalogue that is:
| SRT1000XLI | 1,000 VA / 1,000 W · Tower |
| SRT1000RMXLI | 1,000 VA / 1,000 W · Rackmount 2U |
| SRT1500XLI | 1,500 VA / 1,500 W · Tower |
| SRT1500RMXLI | 1,500 VA / 1,500 W · Rackmount 2U |
It will not work with SRT units on a different battery bus voltage — the 3 kVA models use 96V (SRT96BP / SRT96RMBP) and the 5 kVA and larger models use 192V (SRT192BP family). Match the pack to the UPS battery voltage, not to the physical size of the cabinet.
How many can I connect? Up to ten packs are recognised by the UPS. Runtime scales with each pack added; so does recharge time.
Runtime. Actual runtime depends entirely on the connected load, on battery age and on ambient temperature, so no single figure applies. Schneider publishes per-model runtime tables with one to four packs connected in the SRT brochure linked in the Downloads section below.
Outlets. None. This is a battery pack, not a PDU — the load stays plugged into the UPS.
Rack fit. Tower format, dimensions 432 mm (H) x 85 mm (W) x 536 mm (D), supplied with stabiliser bracket hardware. The matching rackmount variant is the order for a 19-inch cabinet.
Package Contents & Smart-UPS SRT Ordering Information
In the box: Front bezel, ground cable, 2 pan head screws, 2 tie brackets, 4 flat head screws, battery cable connector screw, stabiliser bracket connectors and 4 flat head screws (tower models), user documentation
Smart-UPS SRT external battery pack range
| SRT48BP (this listing) | 48 V, SRT 1 kVA / 1.5 kVA · Tower |
| SRT48RMBP | 48 V, SRT 1 kVA / 1.5 kVA · Rackmount 2U |
| SRT72BP | 72 V, SRT 2.2 kVA · Tower |
| SRT72RMBP | 72 V, SRT 2.2 kVA · Rackmount 2U |
| SRT96BP | 96 V, SRT 3 kVA · Tower |
| SRT96RMBP | 96 V, SRT 3 kVA · Rackmount 2U |
| SRT192BP | 192 V, SRT 5 kVA / 6 kVA · Tower |
| SRT192RMBP | 192 V, SRT 5 kVA / 6 kVA · Rackmount |
| SRT192BP2 | 192 V, SRT 8 kVA / 10 kVA · Tower |
| SRT192RMBP2 | 192 V, SRT 8 kVA / 10 kVA · Rackmount |
Compatible Smart-UPS SRT units at SourceIT
| SRT1000XLI | 1,000 VA / 1,000 W · Tower |
| SRT1000RMXLI | 1,000 VA / 1,000 W · Rackmount 2U |
| SRT1500XLI | 1,500 VA / 1,500 W · Tower |
| SRT1500RMXLI | 1,500 VA / 1,500 W · Rackmount 2U |
Replacement battery cartridge
| APCRBC155 | Replacement battery cartridge for the SRT48BP |
Datasheet & Downloads
Schneider Electric Singapore product page — SRT48BP
Installation Guide — APC Smart-UPS On-Line SRT External Battery Pack SRT48BP / SRT48RMBP
Links open on Schneider Electric's official product and document pages.
Frequently Asked Questions — APC SRT48BP
Which APC UPS models does the SRT48BP work with?
APC specifies it for Smart-UPS SRT 1 kVA and 1.5 kVA models. In our catalogue those are SRT1000XLI, SRT1000RMXLI, SRT1500XLI, SRT1500RMXLI. The pack connects to the UPS 48V DC battery bus — it is not interchangeable with the 96V or 192V packs used by the larger SRT units.
How much extra runtime will one pack give me?
That depends entirely on the load. Runtime roughly scales with the number of packs, but the starting point is your actual wattage draw, so a lightly loaded UPS gains far more minutes than a fully loaded one. Schneider's SRT brochure carries per-model runtime tables for one to four packs; the link is in the Downloads section above.
Can I connect more than one SRT48BP?
Yes — APC states the UPS will recognise as many as ten external battery packs. Remember that recharge time grows with the bank, and that the cabinet needs to carry the weight: battery packs are the heaviest thing in most racks.
Does the SRT48BP have outlets I can plug equipment into?
No. It is a battery pack only. All load equipment stays connected to the UPS; the pack simply extends how long the UPS inverter can keep running.
What replacement battery cartridge does it take, and can I fit it myself?
The SRT48BP uses the APCRBC155 cartridge. The modules are user-replaceable — the front bezel removes and the modules slide out on handles. APC rates typical service life at two to five years and recommends replacement at least every five years.
What is the difference between the SRT48BP and the SRT48RMBP?
Electrically they are the same 48V pack for the same UPS models. The difference is mechanical: the SRT48BP is the tower build with stabiliser hardware, the SRT48RMBP is the rackmount build with rail kit and brackets included. Order the one that matches how the UPS itself is installed.
Is the SRT48BP covered by warranty in Singapore?
Yes. Every APC SRT48BP sold by SourceIT comes with local Singapore warranty and a GST invoice; APC backs the SRT48BP with a 3 years UPS electronics / 2 years battery manufacturer warranty.
