Sigenergy SigenStor BAT
The LFP battery module of the SigenStor system: 314 Ah cells, 100% depth of discharge, IP66 and a 10-year warranty with a stated throughput limit.
- Best for modular hybrid systems
- Installed battery
- 5.2-8.76 kWh usable
- 10-year warranty
- Made by Sigenergy.
- Energy: Sigenergy's specification page lists 6.02 or 9.04 kWh total energy capacity for the battery; its warranty letter lists usable energy of 5.2, 5.84, 7.8 and 8.76 kWh for the BAT 5.0, 6.0, 8.0 and 10.0. The two sources use different model sizes.
- Part of the SigenStor system: the battery works with a Sigen Energy Controller (the hybrid inverter), which takes 1 to 6 battery modules.
- IP66, natural convection cooling, floor-standing or wall-mounted; Sigenergy gives 100% depth of discharge for the usable energy.
- Maximum charge and discharge power is listed as 3,000 / 4,600 W. Sigenergy does not give dimensions or weight on the pages we read.
Not tested by us
We have not tested the Sigenergy SigenStor BAT. The figures on this page come from the sources listed at the end of the page, checked on 11 November 2026, and we do not show prices. "Best for" is based on what the maker says the product is designed for, not on our own tests.
Key figures
5.2-8.76 kWh
Usable energy (warranty letter)
IP66
Protection rating
10 years
Warranty
Specifications
Last checked on 11 November 2026. The grey text under each name explains what the value means.
| Specification | Value |
|---|---|
| Storage | |
| CapacityHow much energy the battery stores. Bigger means longer runtime or more of your own solar power used later. | Total energy capacity 6.02 / 9.04 kWh (specification page); the warranty letter names BAT 5.0 / 6.0 / 8.0 / 10.0 |
| Usable capacityThe part of the stored energy you can actually use. It is lower than the nominal capacity. | 5.2 kWh (BAT 5.0), 5.84 kWh (BAT 6.0), 7.8 kWh (BAT 8.0), 8.76 kWh (BAT 10.0); the 5.84 kWh figure also applies to the Neo BAT 6.0 |
| Depth of dischargeHow much of the battery can be emptied without harming it. 90% means 10% is kept in reserve. | 100%, for the usable energy capacity |
| Battery chemistryLFP (lithium iron phosphate) cells are known for long life and stable behaviour with heat. | Lithium iron phosphate (LiFePO4), 314 Ah cells |
| Cycle lifeHow many full charge and discharge cycles the cells are rated for before they hold less than the stated share of their original capacity. | Not stated as a cycle number; the warranty uses a throughput limit (BAT 5.0: 18.20 MWh, BAT 6.0: 20.44 MWh, BAT 8.0: 27.30 MWh, BAT 10.0: 30.66 MWh) |
| ExpansionExtra battery units that add storage to the same system. | 1 to 6 battery modules per Sigen Energy Controller |
| Power | |
| Charge and discharge powerHow fast the battery can take in and give out energy. It sets how many devices it can serve at once. | Maximum 3,000 / 4,600 W, as listed on the specification page (the page does not say which size each figure belongs to) |
| Round-trip efficiencyThe share of the energy you put in that comes back out. The rest is lost as heat. | Not stated in the sources we read |
| Backup in a power cutWhether it can keep selected circuits running during a grid outage. | Not stated for the battery itself; Sigenergy describes '0 ms' load-side disruption for the SigenStor system |
| Solar | |
| Solar inverterTurns the DC power from solar panels into AC for the home. Built in means no separate solar inverter is needed. | None in the battery itself. The SigenStor system combines solar inverter, battery PCS, battery pack, EV DC charger and EMS in one: the battery is the pack part, the Sigen Energy Controller is the inverter part |
| Connection and housing | |
| Grid connectionThe supply type it is built for. Check it matches your home's supply. | Not applicable: the battery connects to a Sigen Energy Controller (single-phase 3 to 12 kW or three-phase 5 to 30 kW) |
| Dimensions (H × W × D)Check the wall or floor space before you buy, including room for airflow and cables. | Not stated in the sources we read |
| WeightMatters for lifting, wall mounting and moving it. | Not stated in the sources we read |
| Protection ratingIP ratings show protection from dust and water. IP55 and IP65 are rated for outdoor-style exposure; check the installation guidance. | IP66; natural convection cooling; floor-standing or wall-mounted |
| Operating temperatureThe range it is rated to work in. Cold and heat can reduce performance. | Ambient -20 to 55 °C during operation (warranty condition); storage -25 to 35 °C |
| ConnectivityHow you monitor and control it, usually through an app. | Not stated for the battery; the system is monitored with the mySigen app |
| Warranty | |
| WarrantyThe period the maker covers. Read the terms: conditions and capacity guarantees differ. | 10 years for SigenStor BAT 5.0 / 6.0 / 8.0 / 10.0 installed on or after 1 June 2023. A performance warranty guarantees 60% of usable energy after 10 years or the minimum throughput energy, whichever comes first |
Compatible with
What Sigenergy says this product works with. Anything not listed here is not confirmed.
- Controller
- Works with the Sigen Energy Controller of the SigenStor system, 1 to 6 battery modules per controller. Sigenergy does not describe use with other brands' inverters on the pages we read.
- Mounting
- Floor-standing or wall-mounted.
Rules where you live
An installed battery normally needs a qualified electrician, and in many countries you must also tell your grid operator, especially if it can export. This is not a plug-in battery. Rules, incentives and tax treatment differ by country: see our country guides for what applies where you live.
Strengths and things to check
Strengths
- 100% depth of discharge for the usable energy, as stated by Sigenergy
- IP66, so it can be installed outdoors
- 10-year warranty with a stated performance guarantee
- Part of an integrated system with 1 to 6 modules per controller
Worth checking before you buy
- Part of the SigenStor system: it is not sold as a stand-alone battery for other inverters, as far as the sources say
- No dimensions, weight or cycle rating on the pages we read
- The specification page and the warranty letter list different sizes
- No round-trip efficiency figure
Change log
We record changes to this page here, so you can see when figures such as the warranty were last updated.
- 11 November 2026
- Page published. Warranty at publication: 10 years, with a performance warranty (60% of usable energy or the minimum throughput energy). Figures are from Sigenergy's SigenStor specification page and the Europe warranty letter dated July 2026; the two list different battery sizes, and Sigenergy's SigenStor download page showed no datasheet. This page does not cover the Neo BAT or the EV DC variants.
Where this information comes from
We have not tested this battery. Every figure above comes from Sigenergy's SigenStor product and specification pages and its Factory Limited Warranty for SigenStor (Europe, July 2026), last checked on 11 November 2026. A value that the sources do not state is shown as not stated.
We do not show prices, because they depend on the installer's quote.
- Manufacturer Sigenergy SigenStor specifications (Sigen Battery)
- Manufacturer Sigenergy Factory Limited Warranty for SigenStor (Europe, English)
- Manufacturer Sigenergy SigenStor product page
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Common questions about Sigenergy SigenStor BAT
How much does the Sigenergy SigenStor BAT store?
Sigenergy's warranty letter lists usable energy of 5.2, 5.84, 7.8 and 8.76 kWh for the BAT 5.0, 6.0, 8.0 and 10.0. Its specification page lists 6.02 and 9.04 kWh total capacity, so confirm the exact size with your installer.
Does it include an inverter?
The battery module does not. The SigenStor system pairs it with a Sigen Energy Controller, which is the hybrid inverter and takes 1 to 6 battery modules.
How long is the warranty?
Sigenergy states 10 years for the BAT 5.0 to 10.0 installed on or after 1 June 2023, with a guarantee of 60% of usable energy after 10 years or the minimum throughput energy, whichever comes first.
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