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Great Power Max-20HC-3440
Manufacturer documented GLOBAL verified Sept. 25, 2026
Page 1 of Great Power Corporate & Energy Storage Product Brochure (product specification tables) (https://www.greatpower.net/vancheerfile/files/2026/6/20260603212615034.pdf)
Identity
| category | commercial_ess |
| manufacturer | Great Power |
| model | Max-20HC-3440 |
| product_status | active |
| region | GLOBAL |
| variant | — |
Electrical
| cell_capacity_ah |
280
Great Power Corporate & Energy Storage Product Brochure (product specification tables)
|
| cell_configuration |
1P384S*(10 or 9 or 8)
Great Power Corporate & Energy Storage Product Brochure (product specification tables)
|
| chemistry |
LFP
Great Power Corporate & Energy Storage Product Brochure (product specification tables)
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| continuous_discharge_current_a | 100.0 |
| cooling |
liquid
disputed
Great Power — Large-Scale Energy Storage System
|
| cycle_life | 6000 |
| dc_voltage_max_v |
1500
Great Power Corporate & Energy Storage Product Brochure (product specification tables)
|
| dc_voltage_min_v |
900
Great Power Corporate & Energy Storage Product Brochure (product specification tables)
|
| depth_of_discharge_pct | 95.0 |
| design_life_years |
15
Great Power — Large-Scale Energy Storage System
|
| functional_safety_class |
B
Great Power Corporate & Energy Storage Product Brochure (product specification tables)
|
| max_charge_current_a | 80.0 |
| max_charge_current_spec |
173 A*(10 or 9 or 8)
Great Power Corporate & Energy Storage Product Brochure (product specification tables)
|
| max_discharge_current_a | 100.0 |
| max_discharge_current_spec |
173 A*(10 or 9 or 8)
Great Power Corporate & Energy Storage Product Brochure (product specification tables)
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| nominal_capacity_ah | 100.0 |
| nominal_energy_kwh |
3440
Great Power Corporate & Energy Storage Product Brochure (product specification tables)
|
| nominal_voltage_v | 51.2 |
| official_product_url |
https://www.greatpower.net/en/product/largeenergystorage.html
Great Power — Large-Scale Energy Storage System — inventory record source_url
|
| operating_voltage_max_v | 57.6 |
| operating_voltage_min_v | 44.8 |
| phase_count | 3 |
| rated_power_spec |
180kW*10/1.7MW
Great Power Corporate & Energy Storage Product Brochure (product specification tables)
|
| round_trip_efficiency_dc_percent |
> 95
Great Power — Large-Scale Energy Storage System
|
| topology |
container
Great Power — Large-Scale Energy Storage System
|
Physical / mechanical
| dimensions_mm |
W6058*D2438*H2896
Great Power Corporate & Energy Storage Product Brochure (product specification tables)
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| mounting | 19-inch Rack / Wall-mount |
Environment
| charging_temperature_max_c |
45
Great Power Corporate & Energy Storage Product Brochure (product specification tables)
|
| charging_temperature_min_c |
0
Great Power Corporate & Energy Storage Product Brochure (product specification tables)
|
| discharging_temperature_max_c |
50
Great Power Corporate & Energy Storage Product Brochure (product specification tables)
|
| discharging_temperature_min_c |
-20
Great Power Corporate & Energy Storage Product Brochure (product specification tables)
|
| ip_rating |
IP54
Great Power Corporate & Energy Storage Product Brochure (product specification tables)
|
| operating_temperature_max_c | 60.0 |
| operating_temperature_min_c | -25.0 |
Interfaces & connectors
| communication | CAN, RS485 |
| communications |
CAN, 485, TCP/IP
Great Power Corporate & Energy Storage Product Brochure (product specification tables)
|
Certifications
| certifications |
['UL9540A']
Great Power — Large-Scale Energy Storage System
|
Warranty & service
| warranty_years | 10 |
Documents
product_page
Great Power — Large-Scale Energy Storage System
Recorded conflicts
electrical.cooling Review required
liquid — stored value
Liquid Cooling — Max-20HC-3440 | Cooling Method Liquid Cooling
Detected during import deep-enrich-2026-09-batch07
Additional documented parameters
Recorded verbatim from the source; no schema field exists for these yet.
| builder_completeness | partial |
| region_notes | Listed on Great Power's English (global) product site. Great Power also runs a Chinese-language catalogue whose model list differs; see conflicts. |