HE-10 stackable 10.24 kWh home battery

Two 5.12 kWh modules on a floor-stand rack — the configuration for households with a heat pump or an electric vehicle, where a single wall unit would cycle too deeply every day.

Brand: HighIdea
Type: 51.2 V residential ESS, two-module stack
Typical applications: Households with heat pump or EV, larger daily cycling
Models in range: HE-10 two-module stack, HE-15 three-module stack, HE-10B black enclosure, OEM branding
Category: Energy Storage Systems

Depth of discharge is the number that decides the warranty position

A 10.24 kWh pack cycled from 90 % to 20 % every day uses 7.2 kWh and sits comfortably inside the design duty. The same pack discharged to empty every night uses 9.2 kWh and will not reach its rated cycle count, because cycle life is specified at a defined depth.

In practice, the difference between a ten-year battery and a six-year battery is often not the cell — it is whether the system was sized so that daily cycling stays shallow.

Serviceability is designed in

Each module in the stack is a complete unit with its own BMS. If one fails, it is isolated, disconnected and replaced without disturbing the others. That matters ten years after installation, when the original installer may no longer be trading and the replacement has to be done by whoever is available.

The inter-module busbars are accessible from the front, and the replacement procedure is published as a document rather than a phone call.

Key Features

10.24 kWh rated, approximately 9.2 kWh usable at 90 % depth of discharge
Two 5.12 kWh modules on a floor-stand rack with inter-module busbars
Expand to three, four, five or six modules without changing the inverter
Each module individually replaceable — a failure does not require removing the stack
CAN, RS485 and Bluetooth communication
6,000 cycle life at 80 % depth of discharge
10-year warranty or stated throughput

Specifications

Nominal voltage	51.2 V (16S per module)
Rated energy	10.24 kWh (2 × 5.12 kWh)
Usable energy	approximately 9.2 kWh at 90 % depth of discharge
Continuous discharge current	100 A per module
Communication	CAN
Cycle life	6
Operating temperature	0 °C to +50 °C recommended
Enclosure	steel module
Footprint	600 × 420 mm per stack of two
Mass	approximately 112 kg per two-module stack
Warranty	10 years or stated throughput

Specifications subject to the latest factory data. Final configuration is sized against the actual load, backup runtime and site power conditions — this table is for pre-selection only.

Applications

Household with a heat pump

Evening and overnight heating load of 8–12 kWh is covered without deep daily discharge, which is what preserves the cycle life.

Overnight EV charging

Stores daytime solar and discharges into an overnight charge window, reducing the grid import at peak tariff.

Larger household with backup

Combined with a hybrid inverter, covers essential circuits through a grid outage for a full day.

FAQ

Why stack modules rather than one larger unit?

Three reasons: handling, service and expansion. Each module is around 52 kg and can be lifted by two people; a failed module is replaced on its own; and capacity can be added later without removing anything that is already installed. The trade-off is a larger footprint and more inter-module connections to make off.

How deep will it cycle?

That depends on your consumption and the array. We aim for a duty cycle that stays within 90 % depth of discharge and preferably within 80 %, because cycle life is measured at a stated depth. A system that consistently discharges to 100 % every day will not reach its rated cycle count, whatever the datasheet says.

Can a stack be partly outdoors?

No. These modules are IP20 and designed for an indoor or sheltered location. Where the installation has to be outside, use the HE-5W outdoor variant, which is IP65 and includes low-temperature charge cut-off.

What preparation should happen at installation?

Decide the final capacity now if you can. Cable route, breaker rating and the floor space for future modules are much cheaper to allow for at the first installation than to retrofit. The modules themselves can be added later without any change to the inverter.

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