Huawei Luna Battery
The new Huawei LUNA2000-5/10/15-S0 solar storage battery looks very stylish.
The Huawei Luna battery expands with 5kWh modules up to 15kWh and can then be doubled with a second parallel battery to 30kWh.
The initial 5kWh battery module charges and discharges at 2.5kW, but once you expand beyond that the rate increases to 5kW.
The default installation for the battery is floor mounted, but a wall-mount bracket option is available too.
The battery is always 670mm wide, a very skinny 150mm deep, and grows from 600mm (5kWh) to 960mm (10kWh) to 1320mm (15kWh). The Huawei battery is already released in Europe but has been slightly delayed pending a 15 home field trial over East.
Supplies are now expected in Perth, May 2021.
We are still not sure of pricing.
We expect it to be about $3,500 per 5kWh module, plus $500 for the battery management unit, plus installation and configuration.
If that's the case and we allow $500 for install, it may be $8,000 installed for 10kWh or $11,500 for 15kWh...and there again, it may be more, or less !
We'll know soon, probably not until May, and when we do, it will be posted here.
Back-up during blackouts
When your grid power goes out, and you have a battery connected, the Huawei will provided limited emergency power to the house from the battery. If the sun is shining at the time, then the inverter will continue to charge the battery from the solar panels.
Huawei decided not to build this 20A (5kW) backup into the inverter, instead opting for an optional extra $660 Backup Box-B1 EPS box. It's a sensible marketing move, giving people a choice, because many people don't want or need backup as they get so few power outages.
The chemistry of the Huawei Luna battery is Lithium Iron Phosphate (LiFEPO4), the safest type of lithium battery chemistry.
LiFePO4 does not overheat and the electrolyte is not flammable. When punctured or otherwise damaged, they do not burst into flames.
By contract the similar sounding, but entirely different Lithium Ion technology has caused several house fires and at time of writing, a major battery brand is doing a safety related product recall of their Lithium Ion batteries in Australia.
We hear the term 'abundance of caution' a lot these days, often relating to measures around Covid 19, but it should also apply to a home battery. Get Lithium Iron Phosphate batteries and be safe.
The disadvantage of LiFePO4 is a little less energy per kg, but this is not a battery in a car where weight matters, it's fixed to the wall in a house, usually in the garage, and weight makes no difference.