Starlink Gen 2 plugged (On different period of time) 50Watt
Discharge from 100% - 70% = 3 Hours - 8h:00 PM - 11h:00 PM
Discharge from 70% - 50% = 2 Hours - 9:00 AM - 11:00 AM
Discharge from 50% - 10% = 5 Hours - 8h: 00 PM - 1h:00 AM
Macbook Pro 2015, 15 inch - 85Watt
charging from 0% - 100% - 8:00 PM - 11:01 PM
Discharge from 100% - 68% = 3 Hours
My understanding looks something like this:
30% = 1 Hour per 10% (Starlink)
20% = 1 Hour per 10% (Starlink)
32% = 1 Hour per 10% (Macbook Pro 2015, 15 Inch)
First calibration on Silent Mode
Discharging it from 100% - 0% ( Unfortunately i don’t remember the how long it to complete discharge) But i noticed that even at 1% it last almost 3 hours before complete dead to 0%, i even plugged additional devices as well alone with the Starlink ( Just curiously to speed up to depleting).
And i charged it back fully with no loads.
Second calibration on Standard Mode
Discharging it from 100% - 0% ( Unfortunately i don’t remember the how long it to complete discharge) one i noticed it that even at 1% it took almost 3 hours i plugged other devices as well alone with the Starlink.
And i Charge it back fully with no loads.
tested with an 2500 Watt Generator 60Hz.
This generator is not brand new and makes a lot of noise, not as loud as my neighborhood’s one though. And It’s a 110VAC Output 60Hz. My AC180 at first tempted, it charging normally from the generator (Silent Mode) I turned on the Grid option from the app while fully charged it from 0% to 100%. When i tried for a second time, it could not charge it, and i received an error message about fluctuation frequency etc… and every time it try to reach an certain wattage like 200-500Watt it’s keeps shutting down back to 0 (multiple times) and the Grid notification is blinking. Why it worked well the first time but not the second time ?
then i restarted it to get rid of the Grid notification. Since then i stopped charging it from my generator.
Here is the list of my current devices and their wattage based on their adapter.
Samsung Odyssey Mon. 32 Inch 59watt
Dell Laptop 15 inch 65watt
Jackery Explorer 90watt
MacBook Pro 2015, 15 inch 85watt
Starlink Gen 2 50watt
Ulefone Armor Pad 2 33watt
iPhone 12 Pro max 25watt
Here is my Bluetti AC180 Details
IOT: v9046.01, ARM: v2107.03, DSP: v2102.04, BMS: v1052.03
The AC output from Bluetti power stations is amongst the “cleanest” inverter power available. Conversely, it also needs very clean power to charge it as the electronics will protect the system. i.e. modified sine wave inverters will not work and are not recommended for sensitive electronics.
I think you have answered your own issues, in that your generator is likely not as pure sine wave as the AC180 needs.
I know that here in Australia, the general consensus, my own included, is, we only really trust Honda or Yamaha. That is not to say other brands of generator are not good enough, however, cheaper generators fall in to the realms of “You get what you pay for”
The question that should be asked is; would I risk charging a power bank that can cost thousands, with a generator that cost a couple of hundred? for me, that’s a definite NO.
FYI - I have an AC200P, 3 x AC180s and an AC70. I have a Honda 2kVA and a small “cheap” Gentrax 800W. They both work without issue charging. I’ve only tested them each, once as I either Grid or solar charge most of the time. Grid charging is performed during the day as I have home solar, so it’s free power. More…
Re charge/discharge rates.
I have noticed the power draw using my 55" TV, laptop, home fridge and even the Modem/router from my power stations during grid outages fluctuate.
There are a number of reasons for this fluctuation - what the device is doing, temperature and the power supply.
Also, although a constant load will generally draw down a battery powered inverter in relatively constant rate, it is not totally linear. LiFePo4 batteries have a reasonably steady voltage at rest, however, once a load is applied there will be a small voltage drop. As the load increases, the more the voltage drop will be.
Therefore, given that voltage will fluctuate relative to load, voltage slightly decreasing further into the discharge cycle depth and demand fluctuating relative to temperature etc, load x capacity = time, is not going to be exact.
The time left displayed on the AC180 is relative to the load at that time and is a guide only. A good example is when using my home fridge, the load at the time tells me I have 10 hours of use left. When the thermostat stops the fridge compressor, the AC180 display reads 99.9 hours because it’s not doing anything. Once the compressor kicks in again, the time readout is recalculated from load v remaining capacity. Once I see single digit capacity %, it’s time to charge or swap out the power station. Between 100% and 10%, if it’s doing its job, I’m happy and let it do its thing.
I should note - my AC200P, 1 x AC180 and the AC70 are approx 12 months old. The other 2 x AC180s are around 6 months old. All were only fully charged after I unboxed them, then periodically used. The first AC180 is primarily used in my RV and for around 4 months during that time.
Approx 2 weeks ago, I drained all of them (one at a time) to flat, then recharged them to do a BMS recalibration. From what I observed, they were all reasonably accurate before the recal.
I found the easiest way to do this was to run my TV/DVD-R, laptop and desk light from 1 x AC180 until flat. Then I used the next AC180 to charge it until it was flat, then top up the rest from grid. Then “daisy chain” the same scenario through all power stations. Unless something goes wrong, I see a once a year reset is all I’ll need.