Solar Wireless Bridge 2 camera recommendations

[biggen]

The BMS in my LiFePO4 batteries will only let the charge level go down to 20%. I don't know if this is common or not. Additionally, the charging slows down a lot when the charge level goes over 90%. With my BMS, a 100Ah battery has a real life usable capacity of about 750Ah.

My 4000 watts of panels produced 203 kWh this past January. Scaled to a 100 watt panel the production would have been 5.057 kWh, about half of your estimate. Of course a lot depends on location, mine being in a mid-sunny part of Oregon, not the gloomy coast or Willamette Valley. Over 15 years, the lowest January production was 118 kWh, and the highest 306 kWh, so there's a lot of weather dependency. In some years, December was lower than January, but still within the 118-306 bounds.

Yeah, I was giving theoretically numbers for 100% discharge. No one is doing that because the voltage level would drop below what the equipment needs to run before the battery even reaches 100% discharge. Or, as you say, the software in batteries themselves won't even let you go that low before they turn them off. I think you meant 75Ah useable and not 750Ah for a 100Ah battery.

I'm located in Florida so I'm going to get a ton more sun than you. Plugging in a random Oregon zip code (Eugene) to Pvwatts, that shows a 100w panel will produce 5kWh for the month of December which tracks with your numbers. I get double the amount of irradiance at my latitude and weather than you do.

 

[ron351]

The BMS in my LiFePO4 batteries will only let the charge level go down to 20%. I don't know if this is common or not. Additionally, the charging slows down a lot when the charge level goes over 90%. With my BMS, a 100Ah battery has a real life usable capacity of about 750Ah.


What is a 100Ah panel?


My 4000 watts of panels produced 203 kWh this past January. Scaled to a 100 watt panel the production would have been 5.057 kWh, about half of your estimate. Of course a lot depends on location, mine being in a mid-sunny part of Oregon, not the gloomy coast or Willamette Valley. Over 15 years, the lowest January production was 118 kWh, and the highest 306 kWh, so there's a lot of weather dependency. In some years, December was lower than January, but still within the 118-306 bounds.

Guess I meant 100 watt panel. not 100Ah panel.