Fortress Power PES-ESS-BTS-0281: Specs & Datasheet
MPN: PES-ESS-BTS-0281The Fortress Power PES-ESS-BTS-0281 is listed under portable lithium-ion battery packs in the Fortress Power catalog at Portlandia Electric Supply. Contractors and buyers searching “PES-ESS-BTS-0281” for specifications or the datasheet land here: below are the published specifications we have on file for this exact part number, plus compatibility and sourcing notes.
Specifications
| Manufacturer | Fortress Power |
|---|---|
| MPN | PES-ESS-BTS-0281 |
| Model | eFlex 5.4 |
| Battery Type | Lithium Ferro Phosphate (LiFePO₄) |
| Nominal Energy | 5.374 kWh |
| Nominal Voltage | 51.2 V DC |
| Nominal Capacity | 105 Ah |
| Usable Energy | ≈ 5.1 kWh (95% DoD) |
| Round Trip Efficiency | > 98% |
| Cycle Life | ≥ 6,000 cycles @ 80% DoD |
| Continuous Discharge Current | 100 A |
| Peak Discharge Current (5s) | 200 A |
| Parallel Capability | Up to 15 units (≈ 80.6 kWh) |
| Communication Interface | CAN / RS485 |
| Enclosure Rating | IP65 (Indoor/Outdoor Rated) |
| Operating Temperature | –4°F to 131°F (–20°C to 55°C) |
| Cooling Method | Natural Convection |
| Certifications | UL 1973, UL 9540A, UN38.3, UL 9540 |
Compatible With / Used In
- Portable Lithium-Ion Battery Packs applications — manufacturer-listed product category for this part number
- Exact part-number replacements — this page covers MPN PES-ESS-BTS-0281 only — confirm the full part number on your unit, quote, or datasheet before ordering
- Contractor and installer sourcing — quantity pricing and nationwide shipping from Portlandia Electric Supply — call (502) 790-0600
Datasheet Availability
Fortress Power publishes datasheets and installation documents through its official website. For the PES-ESS-BTS-0281 datasheet PDF specifically, call (502) 790-0600 and we will include it with your quote.
View the PES-ESS-BTS-0281 product page →Get a quote →
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Frequently Asked Questions
What are the specs of the Fortress Power PES-ESS-BTS-0281?
Key published specs — Model: eFlex 5.4; Battery Type: Lithium Ferro Phosphate (LiFePO₄); Nominal Energy: 5.374 kWh; Nominal Voltage: 51.2 V DC. The full specification table above lists every value we have on file; values marked “vendor listing” are from our supplier feed and pending manufacturer verification.
Where can I get the PES-ESS-BTS-0281 datasheet?
Fortress Power publishes datasheets and installation documents through its official website. For the PES-ESS-BTS-0281 datasheet PDF specifically, call (502) 790-0600 and we will include it with your quote.
Is the Fortress Power PES-ESS-BTS-0281 in stock?
Yes — in stock at Portlandia Electric Supply with nationwide shipping. Call (502) 790-0600 for pricing and lead time.
How do I make sure the PES-ESS-BTS-0281 is the right part?
Match the full part number PES-ESS-BTS-0281 exactly against your unit, quote, or existing datasheet — part-number families differ in ratings. Call (502) 790-0600 and our team will verify it before you order.
Specifications sourced from the manufacturer listing data maintained by Portlandia Electric Supply. Where a value is not published, it is marked as such — we do not estimate specifications. Questions: call (502) 790-0600. Portlandia Electric Supply, Louisville, KY — 12+ US distribution hubs.