Deye WD-G12100

1.28 kWh usable Low voltage

Datasheet PDF

Usable (kWh)

1.28

Weak · bottom 2%

Round-trip (%)

Not published

Power (kW)

1.2

Typical · median 3.5 kW

Cycles

Not published

Weight (kg)

11.0

Strong · 40.2 kg below median

Warranty (yrs)

Weak · bottom 9%

The Autumn series are low-voltage energy storage systems of the stack-mounted (modular, multi-tier) type, designed for flexible home installations and small consumer systems. The chemistry used in the cells, LFP (LiFePO4), stands out for its high thermal stability and proven performance compared to NMC - practically, this translates to a lower risk of overheating and greater longevity with daily charging from PV sources. The manufacturer declares a high cycle count, meaning years of real-world operation without a noticeable drop in useful capacity, and the warranty simplifies the planning of service costs and return on investment.

A key advantage is its scalability - the system can be expanded by adding more modules or connecting sets in parallel, allowing the storage to adapt to growing self-consumption or backup needs. Communication via RS485 facilitates integration with inverters and hybrid solutions, while the floor-standing mounting structure is also suitable for off-grid installations.

Ranking

27 batteries up to 6 kWh

Metric This battery Median Position in class Rank in class

Round-trip efficiency - 95.0% Not published -

Power per kWh 0.94 0.98 Typical 12

Cycle life - 6000 Not published -

Weight per kWh 8.6 11.1 Strong · top 6% 2

Warranty 5 yrs 10 yrs Weak · bottom 9% 15

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

See 44 Deye offers

Specifications

Open datasheet PDF

Usable energy 1.28 kWh What the battery delivers, full to empty

Nominal energy 1.28 kWh What the cells hold

Max system capacity 12.8 kWh

Units in parallel 10

Continuous discharge power 1.20 kW 0.94 kW per kWh

Voltage class Low voltage

Nominal voltage 12.8 V

Dimensions 600 × 300 × 285 mm Height × width × depth

Weight 11.0 kg 8.6 kg per kWh

Enclosure IP20

Mounting floor

Operating temperature -20 to 55 °C

Protocols RS485 (firmware updates mentioned)

Warranty 5 years