DeManiak 🇿🇦Mar 19

Mains power went out between 02:30 and 03:00 #Today .

House battery at 8%, #PV only at 20W so far..

Will the sun get up far enough before 0% batts?
Will the mains come back before 0% batts?

Such exciting questions!

#SouthAfrica #Tshwane

Show threadDeManiak 🇿🇦Mar 19
28W, 8% batts
Show threadDeManiak 🇿🇦Mar 19

30W, 7%

This feels like a "nice" problem for differential equations (I got kinda nauseous just thinking about calculous from years past)

Show threadDeManiak 🇿🇦Mar 19

35W,7%

updates struggling a bit...

Show threadDeManiak 🇿🇦Mar 19
40W, 6%
Show threadDeManiak 🇿🇦Mar 19
50-60W, 6%
Show threadDeManiak 🇿🇦Mar 19
Touching 80W, 6% batts
Show threadDeManiak 🇿🇦Mar 19

120W, 6%.

ok, I think we pulled through.
PV picks up fast from this point.

phew

Show threadDeManiak 🇿🇦

urg, back to 60W (6%).

guess we got some haze or something

Mar 19 at 5:05amWeb
Show threadDeManiak 🇿🇦Mar 19

90W, 5%

I kinda gotta leave, but don't want to open garage door/motor gate until we got positive flow going..

Show threadDeManiak 🇿🇦Mar 19
Touching 100W again, batts still 5%
Show threadDeManiak 🇿🇦Mar 19

seeing 130W.
Need at least 250W

5% batts

Show threadDeManiak 🇿🇦Mar 19

whoop!
270W

Right on schedule based on yesterday's PV yield graph.

Show threadDeManiak 🇿🇦Mar 19

need about 300W I think before battery might actually charge tho.

currently idle at 5%

Show threadDeManiak 🇿🇦Mar 19

yup! 300W was the magic number.
batts charging.

phew!

Show threadJungle George 🌬️🍃🐉Mar 19
@kaasbaas that was close...
Show threadDeManiak 🇿🇦Mar 19

@junglegeorge yeah.

USUALY we get through the night at 30% left in the tank.
But SOME household members are REALLY wanting fans to be running during the night.

The extra +-100W load makes a huge difderence.

Show threadJungle George 🌬️🍃🐉Mar 19
@kaasbaas we only once had a close call like that and the next morning was (Murphy's law) very overcast luckily the municipal power came back in the nick of time 🤞