Deye BOS-G55

50.68 kWh usable LFP High voltage

Compare with closest alternative Datasheet PDF

Usable (kWh)

50.68

Weak · bottom 3%

Round-trip (%)

Not published

Power (kW)

Not published

Cycles

6000

Typical · median 6000

Weight (kg)

610.0

Typical · median 1480.0 kg

Warranty (yrs)

Typical · median 10 yrs

The BOS-G series are high-voltage rack-format energy storage units designed for rapid installation and seamless expansion without necessitating a complete system overhaul. Their most distinguishing feature is modular scalability - capacity increases by adding further modules, and the system performs effectively both as a UPS backup and for PV self-consumption in businesses or larger homes.

BOS-G utilizes the LiFePO4 (LFP) chemistry, which, compared to NMC, is typically more thermally stable, better withstands intensive operation, and promotes a long service life. This translates to a high cycle count and long warranty period - meaning predictable costs and reduced risk of performance decline after several seasons for the user.

In practice, an intelligent Battery Management System (BMS) with cell balancing and a comprehensive safety suite, along with communication (e.g., CAN/RS485), facilitating integration with inverters and hybrid systems, is also crucial. BOS-G is a suitable choice for grid-connected, hybrid, and specific off-grid scenarios where safety, serviceability, and flexible expansion are key.

Ranking

19 batteries of 50 kWh and up

Metric This battery Median Position in class Rank in class

Round-trip efficiency - 90.5% Not published -

Power per kWh - 0.62 Not published -

Cycle life 6000 6000 Typical 1

Weight per kWh 12.0 11.2 Typical 12

Warranty 10 yrs 10 yrs Typical 1

Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

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Specifications

Open datasheet PDF

Usable energy 50.68 kWh What the battery delivers, full to empty

Nominal energy 56.32 kWh What the cells hold

Depth of discharge 90 %

Module energy 5.12 kWh

Modules per stack 3 to 12

Max system capacity 61.4 kWh

Max discharge current 100 A

Max charge current 100 A

Peak discharge current 125 A

Cycle life 6000 cycles At 90 % depth of discharge

Capacity at end of life 70 %

Voltage class High voltage

Nominal voltage 563.2 V

Operating voltage 458 to 642 V

Cell technology LFP LiFePO4

Cell management Cobalt-free

Dimensions 2219 × 530 × 602 mm Height × width × depth

Weight 610.0 kg 12.0 kg per kWh

Enclosure IP20

Mounting rack

Operating temperature -20 to 55 °C

Compatible inverters Deye (remote upgrade compatible)

Protocols CAN2.0RS485

Warranty 10 years

Certifications CEIEC62619VDE2510-50UL1973UL9540AUN38.3

Alternatives

All Deye batteries

Battery Usable Round-trip Power Voltage Difference

Deye BOS-G55 50.68 kWh - - High voltage You are here

BOS-A (7 modules in series) 48.38 kWh - - HV -2.3 kWh

BOS-G50 46.08 kWh - - HV -4.6 kWh

BOS-G60 55.29 kWh - - HV +4.6 kWh

BOS-G60 Pro 55.3 kWh - 61.4 kW HV +4.6 kWh

BOS-G45 41.47 kWh - - HV -9.2 kWh

GE-F60-EU 61.4 kWh 91.0% 50.0 kW HV +10.7 kWh

SigenStor BAT stack (6 modules) 48.36 kWh - 24.0 kW - -2.3 kWh

SigenStor BAT 8.0 system (6 modules) 46.8 kWh - 24.0 kW - -3.9 kWh

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