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I feel like during stage 6, for me personally, battery should be kept full at all costs.
So here is me today, usually fully charged by 09H15 or so. A bit of cloud, but I went ahead regardless, still had breakfast and made hot water. Batteries descended to 45%. Now I am at 83%, no worries.Even if i had 1000 panels today it'll do nothing. I need rain panels.
Paranoia is a bitt less after i told myself i'll be eskom dependent untill i have more batteries.
If lithium battery, connect the can cable and let the inverter and battery sort themselves out. If LA you're going to have to give a lot more detail, or just ditch the LA and get lithium.
Lithium SMD batteries all the way
On the system work mode screen you set how low it will go (or up to where it will charge) when there is grid present. On the battery setting page you set how low it will go when using battery.
SMD = Solar MD? Do you have the can bus (cat5 cable) connection between battery and inverter?
You can set 90% in the work mode screen, for any of the timeslots. Bear in mind that you can only control charge from grid or genny. If you have solar panels, the system will use solar power to charge past 90%.
Charging and discharging on a lithium battery is largely dictated by the battery and its BMS. You can set the Deye inverter not to exceed these charge / discharge limits. What is your battery make and model, and can you provide its specifications?
Are you able to share your yaml for the automation?
1x Solar MD 7.4 Kwh SMD4074
How are the two batteries connected? Using a busbar? Do they come with documentation? What does the battery manufacturer recommend (charge / discharge) when they are connected this way?
Hmm interesting. My understanding is that you need to parallel the same battery type and capacity... I wonder if the Solar MD Logger v2 can manage a combination of different Solar MD products:
www.solarmd.com
I've had the 7.4kwh version for a year now. Initially comms was only supported through the logger, but the most recent update enables direct comms with my sunsynk ( so assuming similar with deye). Also not sure about the wall mount versions - the rack mounted ones eg. Ss202 are paralleled via an internal busbar in the cabinetHmm interesting. My understanding is that you need to parallel the same battery type and capacity... I wonder if the Solar MD Logger v2 can manage a combination of different Solar MD products:
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Does that mean that any timeslots where you don't tick Grid/Gen are meaningless? Or do that have some purpose?
Where you don't tick grid/gen the inverter still won't discharge the battery below the value. It won't charge from the grid/gen either though.
Not meaningless. Depending on the SoC of the battery, the inverter will either use battery to service loads until the desired state is reached, or charge battery (from grid / genny) when grid / genny is ticked. Overriding the last one is excess solar, if it exists, it will charge batteries with it.
Correct. The grid tick box is to indicate whether it should use the grid to charge up to the set value. It won't use battery below the set value if there is grid available but if grid becomes unavailable it'll use battery up to the limit set in the battery settings.
