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0 pointschrisBob2y ago0 comments

Big heavy batteries for my home would be fine. I want big heavy batteries for my house, but they are still so expensive right now. The Anker batteries seems like one of the best deals around to do a home battery system right now, but I get about 2kWh/$. When I bought my IONIQ6 I got about 2kWh/$, and it came with the rest of a car! I really don't understand the economics of home batteries right now.

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6 comments · 5 top-level

yuliyp2y ago· 1 in thread

Something is very wrong about that 2 kWh / $ price: that seems closer to the cost of electricity rather than the cost of battery capacity.

GaggiX2y ago

He meant 2Wh/$.

briffle2y ago

They get much cheaper when you look things that are modular, and not all tied up in a pretty package.. These batteries have been very popular this year [0]. But then you have to buy a charger/inverter, that maybe works with your solar, and is then certified to work with your power company, etc.

And cables, and a rack to hold them, and a tool to crimp those big huge cables, etc.

For professional installers, they can install these pretty easily, or install the more 'integrated' systems with a much, much larger margin for faster..

[0] https://www.currentconnected.com/product/eg4-ll-48v-100ah-se...

yardie2y ago

1. Economies of scale. The market for an EV is going to be much higher than a whole house battery solution. And most of these solutions are relying on a network of independent contractors to sell and service these batteries. Unlike dealerships, they also aren't buying them at scale.

2. Financing. Most likely you are driving a EV financed by a bank. They've got the process so streamlined you can know within minutes if your 4-wheeled battery bank is coming home with you or not. Trying to get a house battery financed is such a convoluted mess. If it was advertised like a dealership, "Come down to Big Al's Battery Barn. We'll set you up with a 10kWh bank with 0% financing!", I imagine these things would fly off the shelf. Leading back to 1.

turtlebits2y ago

Any all in one solution, ie Anker, Bluetooth, Delta is going to have the most expensive $/kWh price.

Standalone batteries will be in the low $200/kwh and DIY in the low $100s.

GaggiX2y ago

You should look into server rack batteries: EG4, SOK etc...

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