Huawei LUNA2000 S1
A modular LiFePO4 home battery from 5 to 20.7 kWh usable, built from 5 kWh and 6.9 kWh modules that work with compatible Huawei inverters.
- Best for Huawei solar systems
- Installed battery
- 5 to 20.7 kWh
- Up to 15-year warranty
- Made by Huawei.
- Energy: 5, 6.9, 10, 11.9, 13.8, 15, 16.9, 18.8 or 20.7 kWh usable, from one to three battery modules on one power module.
- Power: 3.5 kW with one battery module, 7 kW with two and 10.5 kW with three.
- This is the S1 series; Huawei's older LUNA2000-5/10/15-S0 is a different model and is not covered here.
- Huawei says the warranty is up to 15 years and points to a warranty letter for the details.
Not tested by us
We have not tested the Huawei LUNA2000 S1. The figures on this page come from the sources listed at the end of the page, checked on 10 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
5-20.7 kWh
Usable energy, by module count
10.5 kW
Max. power with three modules
Up to 15 years
Warranty (see warranty letter)
Specifications
Last checked on 10 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. | Battery modules of 5 kWh (LUNA2000-5-E1) and 6.9 kWh (LUNA2000-7-E1); one to three modules per system |
| Usable capacityThe part of the stored energy you can actually use. It is lower than the nominal capacity. | 5, 6.9, 10, 11.9, 13.8, 15, 16.9, 18.8 or 20.7 kWh depending on the modules, at 100% depth of discharge |
| Depth of dischargeHow much of the battery can be emptied without harming it. 90% means 10% is kept in reserve. | 100% (test condition: 0.2C at 25 °C, start of life) |
| Battery chemistryLFP (lithium iron phosphate) cells are known for long life and stable behaviour with heat. | Lithium iron phosphate (LiFePO4) |
| 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 in the sources we read |
| ExpansionExtra battery units that add storage to the same system. | One power module plus up to three battery modules; up to four systems in parallel with an MB0 inverter (252 kWh at most, with three MB0 inverters and 12 systems) |
| 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. | 3.5 kW with one battery module, 7 kW with two, 10.5 kW with three (per system) |
| 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 in the sources we read |
| 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: it connects to a compatible Huawei inverter |
| Connection and housing | |
| Grid connectionThe supply type it is built for. Check it matches your home's supply. | Not applicable: the battery connects to an inverter (operating voltage 350-560 V in single-phase systems, 600-980 V in three-phase systems, DC) |
| Dimensions (W × H × D)Width, height and depth of the unit, so you can check that it fits. | 590 × 510 × 255 mm with one battery module; 870 mm high with two and 1,230 mm with three |
| WeightMatters for lifting, wall mounting and moving it. | 80 kg with one battery module (floor stand toolkit included); 148 kg with two and 216 kg with three |
| Protection ratingIP ratings show protection from dust and water. IP55 and IP65 are rated for outdoor-style exposure; check the installation guidance. | IP66, outdoor or indoor; floor stand as standard, wall mount optional; natural convection cooling |
| Operating temperatureThe range it is rated to work in. Cold and heat can reduce performance. | -20 to +55 °C, with output derating at temperature extremes |
| Noise levelFan noise while working. | Under 29 dB (Huawei lab figure at 1 m) |
| ConnectivityHow you monitor and control it, usually through an app. | RS485, FE and CAN (CAN is for communication between systems in parallel only; FE launch time not yet set); managed in the FusionSolar app |
| CertificationsSafety and grid standards the maker says the product meets. | CE, RCM, CEC, VDE2510-50, IEC62619, UN38.3, ISO13849, REACH, RoHS |
| Warranty | |
| WarrantyThe period the maker covers. Read the terms: conditions and capacity guarantees differ. | Up to 15 years; Huawei refers to its warranty letter for the details |
Compatible with
What Huawei says this product works with. Anything not listed here is not confirmed.
- Single-phase inverters
- SUN2000-2/3/3.68/4/4.6/5/6KTL-L1, SUN2000-3/3.68/4/4.6/5/6K-LB0, SUN2000-8/10K-LC0 and SUN5000-3/6K-LB0, as listed by Huawei.
- Three-phase and larger inverters
- SUN2000-3/4/5/6/8/10KTL-M1, SUN2000-5/6/8/10/12K-MAP0, SUN2000-12/15/17/20/25K-MB0, SUN5000-8/12K-MAP0 and SUN5000-17/25K-MB0, as listed by Huawei.
- Parallel systems
- Up to four systems in parallel, only with the MB0 inverter.
Rules where you live
This is not a plug-in battery. An installed battery normally needs a qualified electrician, and in many countries you must also tell your grid operator, especially if it can export. Rules, incentives and tax treatment differ by country: see our country guides for what applies where you live.
Strengths and things to check
Strengths
- Nine capacity options from 5 to 20.7 kWh in one series
- Up to 10.5 kW per system
- IP66, indoor or outdoor, quiet at under 29 dB
- Wide temperature range of -20 to +55 °C
- Warranty of up to 15 years per Huawei
Worth checking before you buy
- Only works with the Huawei inverters listed
- Heavy: 80 to 216 kg depending on the number of modules
- No efficiency, cycle life or backup figure on the pages we read
- The warranty terms are in a separate letter, so check them before you buy
Change log
We record changes to this page here, so you can see when figures such as the warranty were last updated.
- 10 November 2026
- Page published. Warranty at publication: up to 15 years (Huawei S1 product page). This page covers the S1 series, not the older LUNA2000-5/10/15-S0.
Where this information comes from
We have not tested this battery. Every figure above comes from Huawei's LUNA2000-S1 product page and its specification page, last checked on 10 November 2026. Huawei's figures are lab values and may differ in use. A value that these pages do not state is shown as not stated.
We do not show prices, because they depend on the installer's quote.
- Manufacturer Huawei LUNA2000-S1 specifications
- Manufacturer Huawei LUNA2000-S1 product page
Spotted an error?
Tell us through the contact form on our About Us page.
Common questions about Huawei LUNA2000 S1
How much does the Huawei LUNA2000 S1 store?
Huawei lists 5 to 20.7 kWh usable at 100% depth of discharge, depending on whether you use one, two or three battery modules of 5 or 6.9 kWh.
Which inverter does it need?
A compatible Huawei inverter. Huawei lists single-phase and three-phase SUN2000 and SUN5000 models on its specification page, so check the exact model with your installer.
How long is the warranty?
Huawei says up to 15 years and refers to a warranty letter for the conditions. Ask your installer for that letter before you buy.
Related guides
Does a home battery fit your home?
Our calculator uses your own usage and tariff to estimate what a home battery could save, with conservative assumptions.