---
title: "Deye WD-G12100 1.28 kWh Battery: Specs & Datasheet | ComparePV"
description: "Deye WD-G12100 1.28 kWh home battery. Specs: 1.2 kW continuous, 11.0 kg, 5 yrs warranty."
source: "https://comparepv.com/battery/wd-g12100"
updated: 2026-01-10
---

# Deye WD-G12100


## Identity

- **Manufacturer:** Deye
- **Model:** WD-G12100
- **Series:** Autumn \| Stack-Mounted Battery (LV) / Residential ESS Solution
- **Usable energy:** 1.28 kWh
- **Voltage class:** Low voltage


## How it compares

Compared against 27 batteries up to 6 kWh. Ranks are within that class.


| Measure | This battery | Class median | Standing | Rank in class |
| --- | --- | --- | --- | --- |
| Round-trip efficiency | - | 95.0% |  |  |
| Power per kWh | 0.94 | 0.98 | Typical | 12 |
| Cycle life | - | 6000 |  |  |
| Weight per kWh | 8.6 | 11.1 | Strong - top 6% | 2 |
| Warranty | 5 yrs | 10 yrs | Weak - bottom 9% | 15 |


## Specification


### Capacity

- **Usable energy:** 1.28 kWh
- **Nominal energy:** 1.28 kWh
- **Max system capacity:** 12.8 kWh
- **Units in parallel:** 10


### Power

- **Continuous discharge power:** 1.20 kW


### Cells and voltage

- **Voltage class:** Low voltage
- **Nominal voltage:** 12.8 V


### Physical

- **Dimensions:** 600 × 300 × 285 mm
- **Weight:** 11.0 kg
- **Enclosure:** IP20
- **Mounting:** floor
- **Operating temperature:** -20 to 55 °C


### Compatibility

- **Protocols:** RS485 (firmware updates mentioned)


### Warranty and certificates

- **Warranty:** 5 years


## About this series

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.


## Datasheet

[Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/batteries/wd-g12100-g12200-b6b1341fdeff.pdf)


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Source: https://comparepv.com/battery/wd-g12100