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Home energy storage system 5-20kWh stackable white LiFePO4 battery cabinets with hybrid inverter

Home Energy Storage System 5-20kWh

The XGW home energy storage system pairs stackable 48V/51.2V LiFePO4 battery modules (5-20kWh) with hybrid inverters from 3kW to 15kW, giving households solar self-consumption, peak shaving and whole-home backup. Wi-Fi app monitoring shows real-time energy flow, while the stackable design lets capacity grow with the household - start at 5kWh, expand to 20kWh by adding modules.

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Key Features

Technical Specifications

Technical specifications
Capacity5kWh - 20kWh (stackable modules)
Nominal Voltage48V / 51.2V
ChemistryLiFePO4
Cycle Life≥ 6,000 cycles @ 80% DoD
Hybrid Inverter3kW / 5kW / 10kW / 15kW
CommunicationRS485, CAN, Wi-Fi, app monitoring
InstallationWall-mount / floor-stack; IP65 outdoor option
Operating Temperature-10°C to +50°C
CertificationsCE, RoHS, UN38.3, IEC 62619
Warranty10 years

Applications

Residential solar self-consumption

Store daytime PV generation for evening use, reducing grid dependency by 60-80%. Stackable modules let capacity grow from 5kWh to 20kWh as household energy needs evolve.

Backup power

Whole-home or essential-circuit backup during grid outages. Hybrid inverter automatically islands the home within milliseconds, supplying critical loads from battery and solar without interruption.

Peak shaving & time-of-use

Discharge during expensive tariff windows and recharge during off-peak hours. Wi-Fi app shows real-time energy flow, enabling homeowners to optimize savings against time-of-use rate structures.

Off-grid living

Hybrid operation with generator backup for remote homes and cabins. LiFePO4 chemistry tolerates partial state-of-charge operation without sulfation damage, unlike lead-acid alternatives.

EV charging support

Buffer high-power EV charging loads against limited grid service capacity. The battery system supplements grid power during fast-charging sessions, avoiding costly electrical service upgrades.

Multi-property & small commercial

Scalable systems for small businesses, farms and multi-unit residential properties. IP65 outdoor-rated options enable installation without dedicated indoor battery rooms.

Residential ESS: AC-coupled vs DC-coupled vs Lead-acid

Home storage is chosen by whether you already have solar and how you want to wire it. Chemistry is now almost always LiFePO4.

Residential ESS AC vs DC vs lead-acid
RetrofitAC-coupled, keeps existing PVDC-coupled, new PVLegacy only
EfficiencySlight inverter lossBest round-tripLower
ChemistryLiFePO4LiFePO4Lead-acid
Best forAdd storage to PVNew installBudget legacy

Choose AC-coupled when adding storage to an existing solar inverter - it keeps your PV untouched. For new builds, DC-coupled wins on efficiency. Compare with the larger C&I ESS in the Battery & ESS hub.

Frequently Asked Questions

What size home ESS do I need?

A typical household starts with 10kWh covering evening consumption; all-electric homes or EV charging usually justify 15-20kWh. Our sizing guide walks through daily kWh usage, PV capacity and outage autonomy targets.

Can I expand the system later?

Yes. The stackable module design lets you start at 5kWh and add modules up to 20kWh without replacing the base unit.

Does the system work during a blackout?

Yes. With a hybrid inverter, the system automatically islands the home and supplies backup power from battery and solar within milliseconds.

Which inverters are compatible?

Our battery modules integrate via CAN/RS485 with major hybrid inverter brands, and we supply matched XGW hybrid inverters (3-15kW) as a complete system.

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Need a Custom Power Solution?

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