I have a AC300 &B300K. I tried to charge it with a Honda EU7000is gas powered generator, and the AC300 would not charge. This is a 7,000 Watt Inverter generator, which produces a pure sinewave with less than 3% Total Harmonic Distortion. I also have an AC180, which will will not charge from the generator either.
Both units charge normally when connected to grid power and solar panels. I have already tried the grid adaptation mode on both units, but with no effect. I have a 2000 watt Anker portable power supply, and a Jackery power supply also, which both charge just fine with the inverter generator. Why won’t the Bluetti products charge from the generator, and how can it be fixed?
Hi @Power827, We recommend that you enable the Grid-Self adaption mode on the AC300 and AC180. This mode can expand the AC input voltage range.
Does this help in making it compatible with the generator for charging?
Also, did the power station show any error alarm during charging? We consider that there may be voltage instability during the charging process.
If it is convenient, please provide the SN code and the current firmware version of your AC300.
It might be a quirk with your particular generator (or Bluetti’s?). I have an EU7000is and my Bluetti’s (AC500, AC70) charge fine with or without grid adaptation enabled.
Eric102, Thanks for your reply, you’re the first person I’ve found that has the EU7000is and a Bluetti product. Someone recommended putting a load on the genny to boost the RMPs, which I haven’t had a chance to try yet. Does yours charge with no load, and does it work even if you are in the low rmp Eco mode? I’ve tried both modes with no luck. Thanks.
As I stated in my post, I already tried turning “Grid Adaptation” and it didn’t make a difference, so no it still doesn’t help. There are no error codes generated. The SN for the AC180 is AC1802328002448147, and the AC300 SN: AC3002144000570289. The firmware has been updated to the latest version available.
My EU7000 charges fine with small loads while in eco mode, same with a moderate load of 3200w (AC500). Any chance your 12v starter battery is starting to go bad? Right before mine died the EU700 wasn’t running real great, I put a new battery in it and it’s back to purring like kitten. Don’t know for sure but a bad battery might have an effect on the electronic fuel injection and or the inverter.
Hi @Power827, Thank you for providing the information. We recommend enabling the Silent Charging mode—does that help?
Please tap the AC input icon in the Bluetti app so we can see the specific input details.
Could you also take a screenshot showing the current firmware version of your AC180? This will help us check if there is a newer firmware that could resolve the issue.
I enabled the silent charging mode, and it did not have any effect.
The AC input screen indicates no AC power is coming into the unit. I unplugged the Bluetti, and plugged in my Anker Solix power bank, and the generator revved up, and started charging the Anker immediately. Plugged the Bluetti AC300 back in, and still nothing. Plugged the AC180 in, still nothing.
I’m attaching the screenshots of the AC300, and the AC180 firmware screen, as requested.
Just curious why you didn’t try charging it with a load, like a 1500 watt electric heater, Your generator can put out 7000 watts and the Bluetti AC300 with a proper cord is max 3600 watts (@30 amps) so you have plenty watts to spare.
It seems like this is a simple solution to try first before anything else. By the way I am not the only one that found this as a solution.
My Onan 4000 on a class C RV will only charge My Ac300 when there is a load is on the generator. At Idle the generators voltage, cycles and hertz fluctuate to much for the Ac300’s parameters.
Hi @Power827, We have found that there is a new DSP v2077.07 available for the AC180, and we have applied for it on your behalf. It will be completed within 24 hours. Please perform the upgrade tomorrow and let us know the test results after the upgrade.
As for the AC300, your DSP firmware is already up to date. We would like to know the voltage and frequency during AC charging, and how many amps the current is set to? Please try adjusting the generator’s output power and the AC300’s maximum input current. Does this help?
I will apply the update to the AC180 this weekend, and give an update.
As for the AC300, I have discovered that by putting a 1500 Watt load on the generator causes the AC300 to start charging at approximately 1700 Watts of AC power, so I’ll consider the issue with the AC300 solved. I tried this with the AC180 as well, and while it did start to charge, the AC input power stalled out at 268 Watts, which is pretty low. I plugged the AC300 in at the same time, and it was able to go back to charging the AC300 at 1700 Watts. Will the software update you mentioned fix this issue? Thank you.
Hi @Power827, Thank you for sharing. We’re glad to hear that the issue with the AC300 has been resolved.
Regarding the new firmware for the AC180, yes, it will greatly help optimize the compatibility between the AC180 and the generator. We believe it should resolve the issue. We have already pushed DSP v2077.07 and look forward to your test results.
