- Lithium-ion 1U external battery pack designed for APC Smart-UPS Ultra SRTL 2.2kVA and 3kVA models
- Up to 5 units can be chained per UPS for significantly extended runtime autonomy
- Lithium-ion chemistry delivers up to 3x the usable lifespan of traditional lead-acid battery packs
- Compact 1U form factor minimizes rack space consumed by extended battery capacity
- 5-year warranty on battery pack and lithium-ion cells
Product Highlights
Documents
Description
APC Smart-UPS Ultra Li-Ion External Battery Pack 1U — SRTL50RMBP1U-LI
The SRTL50RMBP1U-LI is the lithium-ion external battery pack for APC Smart-UPS Ultra SRTL 2.2kVA and 3kVA systems. Designed to complement the compact, lightweight form factor of the SRTL 2U rackmount UPS, this 1U battery pack adds meaningful runtime without the weight and bulk of lead-acid alternatives. Up to five units can be cascaded per UPS, giving operators the flexibility to dial in the exact runtime buffer required for their application — from a few minutes of bridge power to extended autonomy during prolonged outages.
Why Lithium-Ion vs. Lead-Acid External Battery Packs?
| Factor | Lead-Acid XBP | Li-Ion XBP (SRTL50RMBP1U-LI) |
|---|---|---|
| Battery Lifespan | 3–5 years | Up to 10 years |
| Weight | Heavier per kWh stored | Significantly lighter |
| Recharge Time | 4–8 hours | Approximately 3 hours |
| Replacement Cycles (10 years) | 2–3 times | 0–1 times |
| Temperature Tolerance | Narrow range | Wider operating range |
Key Features
- Lithium-ion battery chemistry with up to 3x the lifespan of VRLA lead-acid packs
- 1U rack form factor — space-efficient when stacking multiple packs below the UPS
- Up to 5 units per SRTL 2.2kVA or 3kVA UPS for configurable extended runtime
- 5-year warranty on battery pack — matches the SRTL UPS warranty period
- Compatible with SRTL 2kVA and 3kVA Smart-UPS Ultra models only — not interchangeable with SRTL 5kW XBP
Technical Specifications
| Specification | Detail |
|---|---|
| Compatible UPS | SRTL 2.2kVA and 3kVA Smart-UPS Ultra models (SRTL2K2, SRTL3K series) |
| Battery Type | Lithium-ion |
| Form Factor | 1U Rackmount |
| Max Units Per UPS | 5 (cascaded) |
| Warranty | 5 years repair or replace |
Ideal Applications and Industries
Small data closets, branch offices, and edge server rooms running SRTL 2.2kVA or 3kVA UPS units benefit from this 1U XBP when runtime requirements exceed the internal battery capacity. Government agencies and healthcare networks running remote site infrastructure particularly value the reduced maintenance burden — fewer battery replacements over the 10-year deployment window translates directly to lower operational cost and fewer service calls to remote locations. Financial services firms with tight rack density constraints also benefit from the 1U form factor when planning extended runtime without sacrificing valuable rack space.
Reduce Battery Maintenance Across Your Fleet
Questyme helps organizations operating multiple SRTL 2.2kVA and 3kVA UPS systems determine the right number of SRTL50RMBP1U-LI packs per unit to meet their runtime requirements. If you are planning a multi-site rollout or evaluating lithium-ion versus lead-acid total cost of ownership, contact Questyme for a runtime calculation and TCO comparison tailored to your environment.
Specifications
Overview
Model
APC Smart-UPS Ultra 1U RM Lithium-Ion Battery Pack
Main
Battery Type
Li-Ion (Lithium Ion)
Removable Battery
User replaceable
Physical
Color
Silver grey
Mounting Mode
Rack-mounted with kit, Tower-mounted with kit
Product Line
SMART-UPS ON-LINE
Shipping Dimensions
Height: 7.8Width: 22.2Length: 30.08
Shipping Weight
53.99 lb
UPC Code
731304414377
Lead time
Usually in Stock
Provided Equipment
Rack Mounting brackets
Vertical mounting brackets
Vertical mounting brackets
Product Certifications
43.0 lb
Environmental
Packaging Made with Recycled Cardboard
No
Packaging without Single Use Plastics
No
Ambient Air Temperature for Operation
32-104 ?F (0-40 ?C)
Ambient Air Temperature for Storage
5-113 ?F (-15-45 ?C)
Relative Humidity
0-95 % non-condensing
Storage Relative Humidity
0-95 % non-condensing
Operating Altitude
0-10000 ft
Storage Altitude
0-50000 ft (0.0000000000-15240.0000000000 m)
Packaging / Certifications
Unit Type of Package 1
PCE
Packaging Made with Recycled Cardboard
No
Packaging without Single Use Plastics
No
WEEE
The product must be disposed on European Union markets following specific waste collection and never end up in rubbish bins.
Take-back
No
EU RoHS Directive
Compliant with Exemptions