Deye BOS-G45

41.47 kWh usable LFP High voltage

Compare with closest alternative Datasheet PDF

Usable (kWh)

41.47

Strong · top 16%

Round-trip (%)

Not published

Power (kW)

Not published

Cycles

6000

Typical · median 6000

Weight (kg)

420.0

Typical · median 310.0 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

29 batteries from 20 to 50 kWh

Metric This battery Median Position in class Rank in class

Round-trip efficiency - 95.0% Not published -

Power per kWh - 0.51 Not published -

Cycle life 6000 6000 Typical 2

Weight per kWh 10.1 11.1 Typical 11

Warranty 10 yrs 10 yrs Typical 2

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

See 44 Deye offers

Specifications

Open datasheet PDF

Usable energy 41.47 kWh What the battery delivers, full to empty

Nominal energy 46.08 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 460.8 V

Operating voltage 374 to 526 V

Cell technology LFP LiFePO4

Cell management Cobalt-free

Dimensions 1629 × 530 × 602 mm Height × width × depth

Weight 420.0 kg 10.1 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-G45 41.47 kWh - - High voltage You are here

BOS-G40 36.86 kWh - - HV -4.6 kWh

BOS-G50 46.08 kWh - - HV +4.6 kWh

BOS-G40 Pro 36.86 kWh - 41.0 kW HV -4.6 kWh

BOS-A (7 modules in series) 48.38 kWh - - HV +6.9 kWh

BOS-G55 50.68 kWh - - HV +9.2 kWh

BOS-G35 32.25 kWh - - HV -9.2 kWh

SigenStor BAT stack (5 modules) 40.3 kWh - 20.0 kW - -1.2 kWh

SigenStor BAT 8.0 system (5 modules) 39 kWh - 20.0 kW - -2.5 kWh

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