EndurEnergy ESP-BU20: Specs & Datasheet
MPN: ESP-BU20The EndurEnergy ESP-BU20 is listed under battery storage in the EndurEnergy catalog at Portlandia Electric Supply. Contractors and buyers searching “ESP-BU20” 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 | EndurEnergy |
|---|---|
| MPN | ESP-BU20 |
| Energy | 20.48 kWh (4 × 5.12 kWh ESP-5100) |
| Chemistry | Lithium Iron Phosphate (LFP) |
| Nominal / Working Voltage | 51.2 V / 48–56 V |
| Recommended C-rate | 0.5 C |
| Round-trip efficiency | Up to 97% |
| Recommended DoD | 90% |
| Cycle life | ≈6,000 cycles |
| Enclosure rating | IP55 (outdoor) |
| Dimensions (H × W × D) | 48.2″ × 22.9″ × 14.1″ |
| Weight | ≈535.7 lb (4-pack configuration); enclosure: ≈130 lb |
| Compliance | UL 9540, UL 1973, CEC & SGIP (per datasheet status) |
| What’s included | Outdoor cabinet with integrated BMS and 4 × ESP-5100 LFP battery packs (5.12 kWh each) wired in parallel. |
| 20.48 kWh usable class | from four 5.12 kWh LFP packs; scalable in 5.12 kWh steps. |
| Outdoor-rated cabinet (IP55) | with steel, powder-coated construction. |
| Closed-loop compatible | with popular hybrid inverters (e.g., Sol-Ark family). |
| 10-year warranty | ; long-life LFP chemistry (≥6,000 cycles at recommended DoD). |
Compatible With / Used In
- Battery Storage applications — manufacturer-listed product category for this part number
- Exact part-number replacements — this page covers MPN ESP-BU20 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
EndurEnergy publishes datasheets and installation documents through its official website. For the ESP-BU20 datasheet PDF specifically, call (502) 790-0600 and we will include it with your quote.
View the ESP-BU20 product page →Get a quote →
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Frequently Asked Questions
What are the specs of the EndurEnergy ESP-BU20?
Key published specs — Energy: 20.48 kWh (4 × 5.12 kWh ESP-5100); Chemistry: Lithium Iron Phosphate (LFP); Nominal / Working Voltage: 51.2 V / 48–56 V; Recommended C-rate: 0.5 C. 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 ESP-BU20 datasheet?
EndurEnergy publishes datasheets and installation documents through its official website. For the ESP-BU20 datasheet PDF specifically, call (502) 790-0600 and we will include it with your quote.
Is the EndurEnergy ESP-BU20 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 ESP-BU20 is the right part?
Match the full part number ESP-BU20 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.