Hey Everyone,
Thank you for taking the time to reply.
I noticed today, on a rare sunny day, the battery was only 97% fully charged. Normally, I see 100% charge on bright days, and then excess energy going to the grid (octopus), but today it seems more excess is going to the grid, and the battery has not moved from 97%, and no more than 22w of charge is going to it.
Any ideas, please?
Thank you
Wayne
In Self-use, it tends to "bounce" between say 96-100%
You can use Feed-in as your work mode, and then it won't charge up the battery, it goes for max export.
If you PV generation is above your export limit, and house load is not exceeded, then in Feed-in, the battery will take the overspill.
Let's say you are making 6kW of solar, with 4kW of export, and house load is 0.5kW, the remaining 1.5kW will be mopped up by the battery if it has less than 100% SoC.
You can use Feed-in as your work mode, and then it won't charge up the battery, it goes for max export.
If you PV generation is above your export limit, and house load is not exceeded, then in Feed-in, the battery will take the overspill.
Let's say you are making 6kW of solar, with 4kW of export, and house load is 0.5kW, the remaining 1.5kW will be mopped up by the battery if it has less than 100% SoC.
MaterialBarracuda48 - thank you.
If I understand you, what you're saying is all ok, and it's correct?
I only mentioned this because, in spring/summer, I've only ever seen it at 100%, so this was 'new' for me today.
If I understand you, what you're saying is all ok, and it's correct?
I only mentioned this because, in spring/summer, I've only ever seen it at 100%, so this was 'new' for me today.
The BMS is most likely taking control, or the Inverter to shed some power and protect the battery cells.
They don't like being stuck at 100% for any length of time, it shortens the overall battery life.
I myself, have to use Feed-in, and will soon program the battery to dump power in the mornings, to mop up the late morning/early afternoon peak. I have over 6kWp of panels, and 3.9kW of export, so I will be capped. So by making room, I can mop up the excess solar (otherwise it is lost £)
They don't like being stuck at 100% for any length of time, it shortens the overall battery life.
I myself, have to use Feed-in, and will soon program the battery to dump power in the mornings, to mop up the late morning/early afternoon peak. I have over 6kWp of panels, and 3.9kW of export, so I will be capped. So by making room, I can mop up the excess solar (otherwise it is lost £)