Terence Eden on Nostr: Battery got to about 95% full yesterday. Started discharging at about 20:00. This ...

Battery got to about 95% full yesterday.
Started discharging at about 20:00.
This morning it is 30% full.
That's consistent with our home's ~250W idle usage.
Our electricity costs for last night are £0.00. Which saved us about a quid.
At current prices, this battery will pay for itself in 7 years (obviously it is a lot more complicated than that.)