Residential Battery Energy Storage Systems

A home battery is a long-term purchase that has to fit a wall, talk to an inverter, and survive a decade in an unheated garage. The specification that matters is rarely the kWh figure on the brochure.

The number that actually matters: usable kWh

A "10 kWh" home battery rarely delivers 10 kWh to the house. Usable energy depends on the depth of discharge the manufacturer allows, the round-trip efficiency of the pack and inverter, and the temperature in the room it is installed in.

For a cold garage in a northern market, a pack that is rated for -10 °C discharge but has no heater will deliver noticeably less in January than in July. If your market includes cold climates, specify heating and be explicit about it in the datasheet — a customer who discovers a winter shortfall will not stay a customer.

Low-voltage or high-voltage

Two architectures dominate, and the choice is usually set by the inverter rather than the battery.

	Low voltage (48 V)	High voltage (100–400 V)
Inverter pairing	Widely available, cheaper	Specific models, higher cost
Cable and current	Thick cables, high current	Thin cables, low current
Expandability	Add a parallel module	Add a series module
Best for	Retrofit and budget builds	New installations, larger systems
Certification effort	Lower	Higher

Low-voltage systems are easier to certify and to expand in the field, which is why most white-label residential products in the 5–15 kWh band use 48 V. High-voltage systems win where the run between battery and inverter is long or the inverter is already high-voltage.

What we handle in an OEM build

For brand owners we deliver a complete product: enclosure design and tooling, BMS selection and firmware, inverter protocol matching, a datasheet with tested figures, and the certification documentation the market requires. Cell and module production stays in our plant, so your specification is not dependent on a third-party assembler.

Standard platforms start at 5 kWh wall-mount and 10 kWh stackable. Above 30 kWh we move to the commercial cabinet platform.

Available models4 series

Model	Type	Typical applications	Notes
HE-5	51.2 V residential ESS module	Single-inverter home storage, retrofit with an existing hybrid inverter	Expand by paralleling; up to 6 units for 30.7 kWh
HE-10	51.2 V residential ESS, two-module stack	Households with heat pump or EV, larger daily cycling	Modules are individually replaceable without removing the stack
HE-15	51.2 V residential ESS, three-module stack	Large households, heat pump plus EV, backup requirement	Same module as the 5 and 10 kWh stacks — spares remain available across the range
Stackable battery module (custom)	Modular battery	Residential retrofit	Parallel up to 16 modules

Models with links have detailed specification pages; unlisted models are also available on request. Capacity and quantity should be sized by our engineers against the actual load — never by nameplate rating alone.

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