I own an AC200MAX and have connected it with an B300 extension battery.
The AC200MAX also recognizes the B300 and charges both together via solar feed when both are turned on manually.
The solar feed takes place at the AC200MAX.
If I turn off the AC200MAX overnight, the entire AC200MAX and B300 system turns off.
This is correct in my opinion.
However, when the AC200MAX turns back on automatically the next morning due to the solar feed-in, the B300 stays off.
Only the AC200MAX will be charged, but not the B300. The B300 has status standby, the operating light on the B300 remains off. It even does not power on, when the AC200MAX is fully charged
I have the same setup, AC200Max and b230, with solar going direct into the b230 as well as the 200max.
My battery doesnt wake up in the morning either. Thats a major issue, when I get decent sunshine at 5.30AM in the summer…
So if the issue is that the b230 wont wake itself up, once the 200max has turned it off, and there is no fix for that, would it be possible (Bluetti) to change the 200max firmware, so that it doesnt turn the b230 off at night? Would it be an issue for the b230 to be permanently on?
I wondering if there’s some kind of workaround we can do in the meantime.
If you’re happy for the units to stay on 24 hours (I am), then presumably there’s going to be a way to set a little low power device to run periodically to stop the unit from shutting down? Haven’t got as far as thinking what, but I’d have thought it’d work?
The pen drive is now plugged into the b230 (not the 200max) and its little access light is flashing away, so its defo drawing a little power. Both the 200max and b230 are currently on, so we will see what happens later tonight…
The drive is an old one, i dont care if it trashes it…
Result! It worked! So both the AC200MAX and the B230 are both on, first thing this morning, and the battery percentage on the B230 is the same as last night, so there’s your answer… stick a USB pen drive into the B230 to stop it sleeping
Glad I found this thread. I bought my B230 on Dec 21 and it has the same problem, won’t wake from sleep the next morning with solar input to the AC200 MAX. I found out if I leave the DC output ON with no loads connected to the AC200 the B230 will stay awake all night bit it results in a 3% loss of charge. I will try the thumb drive trick tonight. Sounds like an elegant solution. Anybody know if there is a downside to leaving the system powered up 24/7 ?
@Dalders: “The pen drive is now plugged into the b230 (not the 200max) and its little access light is flashing away, so its defo drawing a little power”
Do you mean that you see lights even without the DC power being turned on on the b230? If so, how is your power percentage the same in the morning? I would have thought leaving DC on draws power overnight.
Hi. I left the DC on, with the pen drive attached. This prevented it from going to sleep. Ive not done it over the winter, as we dont get daylight until after i wake up, so its not needed in the winter, but i didnt notice any power loss over night when i did it.
However, i have noticed a powerloss from the b230 over the winter when i have allowed it to go to sleep!