Solar options for home in 2022

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#3488507 7-May-2026 16:57

I have recieved the SDoC today for the 16kWh battery I am going to use at home with Victron inverters and also start selling retail along with Victron gear. If you need to purchase any Victron gear or after a Grade A cells 16kWh battery, please hit me up.

Do whatever you want to do man.

Ge0rge

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#3488515 7-May-2026 17:28

What sort of price are they going for?

billgates

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#3488517 7-May-2026 17:41

I will do limited time GZ special price. $7900 incl GST and free shipping to most regions in North Island. South Island will be an extra charge for shipping. Price per W comes out at 46.25cents at 100% usable 16kWh. The BMS is custom made by Ruixu and not off the shelf and also has fire suppressant system built in.

edit - 2x 16kWh units for $15k

RUiXU Lithi2-16 Unboxing

Do whatever you want to do man.

ScuL

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#3488564 7-May-2026 22:10

billgates:

I have recieved the SDoC today for the 16kWh battery I am going to use at home with Victron inverters and also start selling retail along with Victron gear. If you need to purchase any Victron gear or after a Grade A cells 16kWh battery, please hit me up.

Would you be able to run these as grid-offsetting without an inverter or is a solar inverter a requirement?

I am looking for a ~15kWh-ish battery to use off-peak power during peak hours.

Haere taka mua, taka muri; kaua e wha.

dantheperson

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#3488568 7-May-2026 23:15

ScuL:

billgates:

I have recieved the SDoC today for the 16kWh battery I am going to use at home with Victron inverters and also start selling retail along with Victron gear. If you need to purchase any Victron gear or after a Grade A cells 16kWh battery, please hit me up.

Would you be able to run these as grid-offsetting without an inverter or is a solar inverter a requirement?

I am looking for a ~15kWh-ish battery to use off-peak power during peak hours.

Victron have some very capable and reasonably priced battery charger/inverters. So you run it as an AC coupled battery, no need for solar inverter. Search on victron multiplus

billgates

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#3488591 8-May-2026 07:32

ScuL:

Would you be able to run these as grid-offsetting without an inverter or is a solar inverter a requirement?

I am looking for a ~15kWh-ish battery to use off-peak power during peak hours.

The battery is 48V so you will need a 48V inverter like Victron Multiplus II 5kVA which is approved to be grid connected in NZ. That can keep your battery charged via DC and also provide power to your house via AC without requiring solar panels on the house roof if you wish. This is only really recommended if you have cheap off peak from grid to charge the batteries and use the power from batteries during peak.You can connect multuple 5kVA units in series to double your power output if a single unit cannot handle your peak.

Do whatever you want to do man.

HarmLessSolutions

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#3488874 8-May-2026 17:22

April Ecotricity account landed in my inbox today. A dull month so generation down a bit and consumption increasing as the shorter days roll in so $38 whittled off our accumulated credit overall.

Ecotricity's supply rates have increased marginally but great to see lines company on-peak export credit of 6c/kWh being added to the mix. Effectively this makes our peak export tariff 31.05c with GST included. Definitely worth minimising our morning consumption habits to capitalise on the extra 13c over off peak export tariff.

https://www.harmlesssolutions.co.nz/

Ge0rge

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#3490148 12-May-2026 15:31

billgates:

I will do limited time GZ special price. $7400 incl GST and free shipping to most regions in North Island. South Island will be an extra charge for shipping. Price per W comes out at 46.25cents at 100% usable 16kWh. The BMS is custom made by Ruixu and not off the shelf and also has fire suppressant system built in. Normal RRP will increase to $7950 after few weeks.

edit - 2x 16kWh units for $14k

RUiXU Lithi2-16 Unboxing

I'm rather interested in taking you up on the offer of two batteries. Do you have yours hooked up yet? I'm curious about the accuracy of the BMS in closed loop mode - I have a victron shunt on my current DIY battery, with a JK BMS. The JK is horrendous at tracking the SoC, particularly when very low current is being drawn - often the JK and the victron can be 20% apart.

How have you found the RUiXU?

fastbike

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#3490158 12-May-2026 16:01

Ge0rge:

billgates:

I will do limited time GZ special price. $7400 incl GST and free shipping to most regions in North Island. South Island will be an extra charge for shipping. Price per W comes out at 46.25cents at 100% usable 16kWh. The BMS is custom made by Ruixu and not off the shelf and also has fire suppressant system built in. Normal RRP will increase to $7950 after few weeks.

edit - 2x 16kWh units for $14k

RUiXU Lithi2-16 Unboxing

I'm rather interested in taking you up on the offer of two batteries. Do you have yours hooked up yet? I'm curious about the accuracy of the BMS in closed loop mode - I have a victron shunt on my current DIY battery, with a JK BMS. The JK is horrendous at tracking the SoC, particularly when very low current is being drawn - often the JK and the victron can be 20% apart.

How have you found the RUiXU?

All BMSs will drift. My battery system has a small shutdown every 24 hours to allow re-calibration to occur, we normally notice a couple % points in what the inverter measures. Today's was a drop from 77 to 72% which you see on the purple/pink line

Otautahi Christchurch

billgates

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#3490629 13-May-2026 17:27

Ge0rge:

I'm rather interested in taking you up on the offer of two batteries. Do you have yours hooked up yet? I'm curious about the accuracy of the BMS in closed loop mode - I have a victron shunt on my current DIY battery, with a JK BMS. The JK is horrendous at tracking the SoC, particularly when very low current is being drawn - often the JK and the victron can be 20% apart.

How have you found the RUiXU?

Thanks @Ge0rge

The batteries are currently loaded onto a truck at Factory and should be loaded onto the boat within a week and then just under 45 days to reach NZ and then my warehouse. I am going to sell the stock first to customers as priority before I take some away for my own personal use. What model battery inverter do you have so I can confirm if closed loop will work or you need to use voltage mode on the inverter. RUiXU's BMS is custom made by them and I have not heard or read of any complaints. It is also user accessible and replacable without opening up the entire battery should it need replacement. I will let you know once the batteries arrive. If you do need any Victron gear or ZJ Beny 250A DC breakers with IP65 case, I can supply those and ship for free as well at competitive prices all with GST invoice included. I have just started to develop a retail website which will take hopefully not a lot of time so will be easy to purchase the gear easily in near future.

Do whatever you want to do man.

Ge0rge

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#3490638 13-May-2026 18:19

Everything I have read so far on the DIY Solar forums and a couple of other places online suggests that these are the batteries to get currently.

I've got a Deye SUN-12K-SG02LP1-AU that I would be looking to connect the RUiXU batteries to.

mark0x01

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#3490778 14-May-2026 09:18

What is a good "over commit" of solar panel to inverter and grid export limit.

Mainpower have approved a 7.0 kW export limit.

The Inverter is rate at 8Kw, but I'll only be getting 7Kw of panels to start and no battery.

Background load is around 1Kw/H for most of the day.

LightbulbNeil

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#3490783 14-May-2026 09:31

mark0x01:

What is a good "over commit" of solar panel to inverter and grid export limit.

Mainpower have approved a 7.0 kW export limit.

The Inverter is rate at 8Kw, but I'll only be getting 7Kw of panels to start and no battery.

Background load is around 1Kw/H for most of the day.

Size your system for winter consumption. With an 8kw inverter , would reccomend 10kw of panels

5kw panels NE and 5Kw NW. This will give you the longest sunshine hours in Winter.

Panels currently are about the cheapest you will see them. Installing more later is not cost effective.

billgates

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#3490784 14-May-2026 09:32

@mark0x01 it is expensive to add panels laters. On a 8kW inverter, you can safely add atleast 10kW of PV array.

Do whatever you want to do man.

razor2000nz

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#3490787 14-May-2026 09:43

Just wanting to get peoples thoughts on deposit amounts, is 50% the norm in this industry? Seems like they use your deposit to buy the product. But if they go bust your deposit is gone as you are unsecured.

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