BESS comparison
AlphaESS Aster 5000 vs LG Energy Solution JF2 AC LINK (2HR / 4HR)
Both columns come from what AlphaESS and LG Energy Solution publish. Fields either maker does not publish are marked «not published»; we do not estimate or rank.
AlphaESS
Aster 5000
5.016 MWh
20 ft containerliquid-cooledLFPshipping
LG Energy Solution
JF2 AC LINK (2HR / 4HR)
5.11 MWh
modular blockliquid-cooledLFPshipping
Specifications side by side
| Field | AlphaESS Aster 5000 | LG Energy Solution JF2 AC LINK (2HR / 4HR) |
|---|---|---|
| Max energy per enclosure | 5.016 MWh | 5.11 MWh |
| Max power per enclosure | 2.508 MW | 2.55 MW |
| Published durations | 2 h | 2 h · 4 h |
| Segment | utility-scale | utility-scale |
| Status | shipping | shipping |
| Cell chemistry | LFP | LFP |
| Cell capacity | not published | not published |
| Cell configuration | not published | 14 packs in series × 6 racks in parallel (2HR) |
| Cell supplier | not published | not published |
| Form factor | 20 ft container | modular block |
| Block type | DC block | AC block (PCS integrated) |
| PCS integrated | no | yes |
| DC voltage | 1331.2 (rated) V | not published |
| Cooling | liquid-cooled | liquid-cooled |
| Ingress protection | IP55 | IP55 |
| Operating temperature | -40…50 (battery module) °C | -30…50 °C |
| Dimensions (L × W × H) | 6058 × 2438 × 2896 mm | 7020 × 2570 × 2900 mm |
| Weight | 43 t | 48 t |
| Energy density | not published | not published |
| Round-trip efficiency | not published | not published |
| Cycle life | not published | not published |
| Calendar life | not published | not published |
| Warranty | not published | not published |
| Fire suppression | aerosol + sprinkler (redundant dual-extinguishing) + explosion relief panel | gas detection and active venting system, fire detection and alarm system |
| Generation | V01 (2025-05) | 2024 |
| Announced | not published | 2024-11 |
| Certifications | IEC 61000, IEC 62477, IEC 62619, IEC 62933, NFPA 69, UL 1973, UL 9540A | IEEE1547, IFC/CFC, NFPA 69, NFPA 72, NFPA 855, UL1642, UL1741 (SA, SB), UL1973, UL9540, UL9540A and large-scale fire testing, UN 38.3 |
| Public datasheet | yes | yes |
Where they differ
Only fields both manufacturers publish and where the values are not identical. Not a judgement — the right choice depends on the project.
- Max energy per enclosure: Aster 5000 — 5.016 MWh; JF2 AC LINK (2HR / 4HR) — 5.11 MWh
- Max power per enclosure: Aster 5000 — 2.508 MW; JF2 AC LINK (2HR / 4HR) — 2.55 MW
- Published durations: Aster 5000 — 2 h; JF2 AC LINK (2HR / 4HR) — 2 h · 4 h
- Form factor: Aster 5000 — 20 ft container; JF2 AC LINK (2HR / 4HR) — modular block
- Block type: Aster 5000 — DC block; JF2 AC LINK (2HR / 4HR) — AC block (PCS integrated)
- PCS integrated: Aster 5000 — no; JF2 AC LINK (2HR / 4HR) — yes
- Operating temperature: Aster 5000 — -40…50 (battery module) °C; JF2 AC LINK (2HR / 4HR) — -30…50 °C
- Dimensions (L × W × H): Aster 5000 — 6058 × 2438 × 2896 mm; JF2 AC LINK (2HR / 4HR) — 7020 × 2570 × 2900 mm
- Weight: Aster 5000 — 43 t; JF2 AC LINK (2HR / 4HR) — 48 t
- Fire suppression: Aster 5000 — aerosol + sprinkler (redundant dual-extinguishing) + explosion relief panel; JF2 AC LINK (2HR / 4HR) — gas detection and active venting system, fire detection and alarm system
- Generation: Aster 5000 — V01 (2025-05); JF2 AC LINK (2HR / 4HR) — 2024
- Certifications: Aster 5000 — IEC 61000, IEC 62477, IEC 62619, IEC 62933, NFPA 69, UL 1973, UL 9540A; JF2 AC LINK (2HR / 4HR) — IEEE1547, IFC/CFC, NFPA 69, NFPA 72, NFPA 855, UL1642, UL1741 (SA, SB), UL1973, UL9540, UL9540A and large-scale fire testing, UN 38.3
Published by only one of the two: Cell configuration, DC voltage, Announced.
Variants
AlphaESS Aster 5000 variants
| Variants | Energy | Power | Duration |
|---|---|---|---|
| Aster 5000 (AlphaCS-H20-DC-LC-EX, 12 clusters, 0.5 P) | 5.016 MWh | 2.508 MW | 2 h |
LG Energy Solution JF2 AC LINK (2HR / 4HR) variants
| Variants | Energy | Power | Duration |
|---|---|---|---|
| JF2 2HR AC LINK — 5.11 MWh / 2.55 MW, 690 Vrms, 0.5 CP | 5.11 MWh | 2.55 MW | 2 h |
| JF2 4HR AC LINK — 5.11 MWh / 1.32 MW (6 × 220 kVA), 690 Vrms, 0.25 CP | 5.11 MWh | 1.32 MW | 4 h |
Full model cards
Open AlphaESS Aster 5000 →Open LG Energy Solution JF2 AC LINK (2HR / 4HR) →
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