AC200P Watts Low Charging with Solar Panels

Product Discussion BLUETTI AC Series
1

When I received my AC200P I topped off the change to 100% with AC. I then discharged it to 96% testing out the various outputs.

I then hooked it up to 3 SP200s in series to charge verify that the solar charge was working. I tested each panel for volts and was getting around 24V each. In series I was getting 70V. When I hooked up to the AC200P, the charge started and showed 71V but quickly dropped to around 40V. Also, the Watts ran around 210 - 220. I would have expected more.

Is this because the unit is close to fully charged and starts to pull less energy? If so, at what discharge level might I see the full use of the watts available from the panels?

I want to test to make sure all is good.

Thanks.

2

yes it will slow down charging about 90% to 100%
recommend you run your ac200p down to less than 20% .Then recharge with ac to say 70% then pv charge the remaining with good sun and see what it reads.ps-you can charge it up from Pv the whole way too.It does it on my 2 bluettis the same way -ac200p/eb55.the last 5% will drop to 0% then shut off.pv

3

The 3 SP200’s should give you about 400-450 watts in good conditions. My 200 watt fixed panel Renogy’s do 15-20 watts better per panel. I suspect that’s because the Renogys run cooler as the SP200’s back is covered in black material and the Renogys back is open air.

4

I will give that a try this week. We are suppose to have good sun all week.

Thanks.

5

400 - 450 was what I was expecting today as the sun was really good. I will see if running the generator down most of the way first allows more watts to be pulled. Thanks!

1 Like
6

So I ran the unit down to 19% and hooked everything up. I am getting about 58V and between 385 and 395 Watts with three SP200s. 66% efficiency? Is this good in August in southern PA at 1:00PM? Full Sun?

Will see how long it takes to charge.

7

See my test of the SP200’s here: Bluetti SP200 portable panel vs Renogy 200 watt fixed panel
I was getting around 140 watts per panel so yours are in the ballpark. Mine were perfectly aimed both azimuth and elevation, not sure if that makes much difference.

8

That is exactly what I received with 4 Sp200 connected in series in perfect conditions 140w per panel, for a total of 560w. I was connected to a ac200p. When I tried just 1 connected to a EB70, I received a total of 155w. I believe you reduce the wattage with the more wiring and I did use a 30 ft mc4 extention wire for the 4.