Update- new info added and another question-B300k-proper discharge and recharge

Question:
I have an AC300 and three (3) B300 batteries…I just purchased a 4th, a new B300k battery and hooked it up…no problem… So now i have 4 batteries operating.
I want to discharge all of the batteries to zero (0), have it shut off as required, AND then recharge as specified by the AC300/B300 manual for 2 reasons; to sync all of the batteries, and to discharge every 6 months as required by the manual…
However…The B300k manual states do not discharge below 1%, AND, then it says if you discharge below 1% (meaning off) immediately recharge (grid).
So the question is, what is the proper discharge method for the B300k?
Thank you.
Update: I ran all four batteries down to zero and everything shut off as required… when I plugged the AC300 into the grid the three B300 batteries all automatically turned on, the B300k did not, and had to be manually turned on… the manual says on page 10 it will automatically turn on … is this because it was at zero or something else?

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So, no word from Bluetti support…interesting. At least acknowledge the posting.
Anyone else get a, “no response” from support. They used to be all over this forum; I guess success has superseded support.

Hello @LukeWarm ! I am suspecting that an update to your AC300 and/or B300k is what is needed to activate full communications. Perhaps @BLUETTI_CARE can help see if there are any updates needed?

I thought the B300k battery could not be mixed with B300 batteries. I have a similar setup, (AC300 and two B300 batteries) and read somewhere that the two could not be mixed. Maybe that is part of the problem?

B300 and B300k can be mixed as well as b300k and B300s.

They are supposed to respond on here…app says all up to date.

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Hi @LukeWarm, Thank you for your attention to this issue.
The AC300 is an earlier model that was launched alongside the B300, so the two have excellent compatibility. The B300K, on the other hand, is a newer model released later—it’s designed to work with a wide range of host devices, which means it can’t easily identify the specific model of the host it’s connected to. For smoother recognition, we recommend turning on the AC300 first and then powering on the B300K—this helps the B300K detect the host quickly.
Another key point: during recalibration, unlike the B300, we advise not draining the B300K’s battery fully. Keeping the remaining power above 1% is sufficient.
Thank you to @hnymann for your attention and helpful reminder.

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I have an AC300 with two B300 batteries, and one B300k battery. What is the best way to discharge the two B300 batteries while only bringing down the B300k to 1%? And how is the B300k turned on “manually?”

Is there a way to have my AC500 turn off the B300ks before it goes below 1%?

Hi @SureHope, thank you for contacting us.
Currently, there is no way to set the B300K to shut down at 1% battery level.
To avoid complete power depletion, we recommend keeping it connected to a power source at all times, or enabling ECO mode to prevent over-discharging.

I remember when BLUETTI support used to jump into threads pretty quickly even just to say “we’re looking into it.” That kind of presence builds trust. Lately though, it does feel quieter, and when you’re waiting on an issue, silence makes it worse.I’ve personally had a similar “no response” experience recently sure if it’s due to increased demand, staffing changes, or just support channels getting overloaded. As companies grow, sometimes community engagement takes a hit, which is unfortunate because early users are usually the most loyal.
That said, I’d still try a couple of things if you haven’t already:

  • Follow up on your original ticket (sometimes it bumps it up)
  • Try a different channel (email + social media like Facebook)
  • Check if others are reporting delays helps confirm if it’s widespread
    Hopefully it’s just a temporary slowdown and not a long-term shift. But yeah.a simple acknowledgment would go a long way.

I also noticed the slower response from support, perhaps Bluetti products have matured enough that they are are no longer paying as much attention to what they may see as fringe issues, which is a shame as it was one of the main issues why I brought a few Bluetti devices.

The community does seem much quieter and answers to issues seem to be unanswered for what seems like ages with customers usually having to bump the request with repeated posts to Bluetti.

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