Sunsynk published a news item on 6 June 2023 introducing a 3.07 kWh Mini Battery combined with a 7kW MPPT bi-directional inverter, which it describes as one of its new energy storage products1. The company presents the unit as a paired battery and inverter rather than a battery alone1.
The published specification lists a 7kW MPPT and a 3.07 kWh lithium battery pack1. Sunsynk states the unit ships with all cables included, a built-in battery breaker or fuse, and a built-in solar PV isolator, and that installation is plug and play for faster fitting1. According to the company, only an AC isolator is required on site1.
"This lithium iron phosphate battery and 7kW MPPT Bi-Directional Inverter is one of the new energy storage products developed and produced by Sunsynk."
The announcement gives no price, no dimensions, no cycle life, no usable capacity figure, no warranty terms and no confirmed UK availability date1. It also does not state whether the product is certified for connection under UK installation standards, nor which battery chemistry variants or enclosure ratings are offered1. None of these details have been reported in the item1.
| Item | Detail given |
|---|---|
| Battery capacity | 3.07 kWh |
| Chemistry | Lithium iron phosphate |
| Inverter | 7kW MPPT bi-directional |
| Cables | Included |
| Protection | Built-in battery breaker / fuse |
| Solar isolation | Built-in PV isolator |
| Installation | Plug and play |
| Required on site | AC isolator only |
Why it matters for households
A combined battery and inverter unit of this size sits at the smaller end of the home storage market, where capacity is usually quoted in whole kilowatt hours. A 3.07 kWh pack is modest against typical household evening consumption, so its practical value depends on how it is used: shifting a few hours of solar generation, covering short outages, or adding storage where space and cabling are limited. Sunsynk's emphasis on included cables, built-in isolation and plug and play points to installation time and parts count as the selling points rather than raw capacity1.
For a household weighing up energy independence, the announcement leaves the questions that matter most unanswered. There is no stated usable capacity, no depth of discharge, no round-trip efficiency and no indication of how the unit behaves in a power cut1. The absence of a price and of UK certification detail means the cost and compliance position cannot be assessed from the announcement alone1. Households comparing storage options can read more on home batteries generally, on Sunsynk hybrid inverters and home battery storage specifically, and on all-in-one battery systems where battery, inverter and backup are combined in one unit. Safety questions around lithium iron phosphate packs and their management electronics are covered in how safe home battery storage systems are and in what a battery management system does.
What happens next
No launch date, pricing or UK availability has been reported1. Sunsynk's news page lists later items, including a hybrid inverter range announced in December 2025 and an AC coupling article in February 2026, but the Mini Battery item itself carries no follow-up detail1.
Sources1 cited
- News | Sunsynk | Sunsynk, sunsynk.org