Solar PV battery options

Good job! What will be your total kWh capacity when all the batteries are installed? Are you willing to part with that Puredrive battery yet?

Also, what monitoring app are your using? I've a Solis inverter as well, but the app I was given is nowhere near as fancy as that.

Virtually all the inverters have an app of some description to show you the telemetry of what's happening in the system.

All of what you say is possible, without having to write sophisticated custom automation. You can set charge/discharge times on your battery so that it only discharges during day time rates, where it's needed of course. meaning that you can charge it via the solar panels from say 8am to 7pm, and then when it's dark, the battery will keep you going until night time rates kick in (midnight in the summer)

@THE ALM You really should use the default option to specify the battery type. This is really for Lead Acid's, for the inverter to "guesstimate" the SOC%. You really want the inverter being dumb and learning everything from the BMS of the battery modules.

No default option selectable, with the Solis manual and battery manufacturer both stating to select 'User Defined' and input battery parameters.

I'll chase up when the battery will be added to the Solis firmware but all seems to be working well with both the battery and inverter displaying the same readings.

My apologies, I meant User Defined. That is generally for Lead Acid's when you don't have a BMS. The power curve of Lead Acid's is quite different to LiFePO4's.

I expect you have connected the BMS to the inverter, but it will be doing absolutely nothing.

The BMS should tell the inverter about the voltages and the cell capacities.

Did you try various battery types on the inverter, to see if one worked ?

I'm only saying all of this because I started with a HEYO / DALY BMS. The inverter was all over the place with guessing the SOC%. I was really only getting to use about 70% of the batteries capacity. The Seplos changed everything

I'll keep an eye on it and check the readings on the inverter and the battery bms to see how they tally and see what battery capacity we are seeing with the charging and discharging.

Sent a request to Solis to see what they say.

Just ordered 4 of these Seplos kits but the BMS is on back order so hopefully not too much of a delay.

Got fed up waiting on supplies of off the shelf batteries so decided to go down this route after watching Andy's experiences on the Off-Grid Garage YouTube channel.

How big is the battery you're building if you need four of these?

That better be paired with at least 30kw of panels 🤣

Have a look at the ratings for PWOD official store. That will say it all. I wouldn't buy anywhere else tbh