points by harikb 1 day ago | 0 comments
The value of a used 24 KWh battery used in, say, an old EV non-tesla car - $2000 (note this still has plenty of life left). Example: a 2013 Nissan Leaf
The value of the same, repurposed to a "powerwall" - $10k per 10 KWh
The value of it once attached to a "movable powerwall" - :) add a few more zeros
Clearly, I am in the wrong business...
[–] trainsarebetter 10 hours ago
Pair a used ev battery with the battery emulator https://dalathegreat.github.io/Battery-Emulator-Wiki/
And you got a budget opensorce powerwall
[–] throwaway85825 1 day ago
Batteries are cheap, an unsafe installation burning your house down, extremely expensive.
Best practice would be to build a separate structure and physically separate the battery from your house.
[–] alex43578 1 day ago
[–] lostlogin 1 day ago
When we got solar we asked for quotes, but ‘No Tesla’. The sales rep said ‘We get that a lot’.
[–] Lio 23 hours ago
I wasn’t interested in hearing any advantages of a Tesla Powerwall, that brand is toxic to me now.
There’s plenty of good alternatives that don’t fund criminals like Tommy Robinson and Russell Brand.
[–] lostlogin 23 hours ago
We have Sigenergy. Are they better than Teslas? Unsure, but at least I have no idea what the owner(s) think.
[–] Lio 13 hours ago
I want a system that doesn't need to be connected to the cloud.
[–] wlesieutre 1 day ago
[–] amscanne 13 hours ago
If you have a string inverter setup, I’m not aware of anything good that is cheaper. If you have micro inverters then sure, but otherwise you have additional hardware cost.