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"Renewed" Bluetti units from MaxOak

Dear AsstroBob
It wasn’t a demand, I asked a couple reasonable questions. Last I heard asking questions is how we exchange info here. And no… I don’t know the approximate answers, nor did I know what fridges you were running, and in what conditions.
No experience with the eb70, but do have with the ac200max as I indicated earlier and have been considering buying an EB70 since they’ve been on sale a few times lately and likely will be again over the holidays.

AND, actually the thread started with comments about both the eb70 AND the ac200p. This thread has not been just about the eb70.

You seem to make assumptions, emphasis on the first syllable.
No reason to be such a jerk, you could have just not answered vs getting all twisted up about a couple simple questions.
 
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Rocksnsalt said:
Dear AsstroBob
It wasn’t a demand, I asked a couple reasonable questions. Last I heard asking questions is how we exchange info here. And no… I don’t know the approximate answers, nor did I know what fridges you were running, and in what conditions.
No experience with the eb70, but do have with the ac200max as I indicated earlier and have been considering buying an EB70 since they’ve been on sale a few times lately and likely will be again over the holidays.
You seem to make assumptions, emphasis on the first syllable.
No reason to be such a jerk, you could have just not answered vs getting all twisted up about a couple simple questions.
Click to expand...
Maybe you should take a chill pill, and stop being triggered by a simple "look", Pal. You are the one who was triggered by a simple answer. Fridges are one of the most discussed and beat to death subjects around here. How about coffee makers? What brand of single serve coffee maker do you use with your bluetti?
 
My $641 dollars AC200P just arrived. State of charge was 87% on arrival. I charged it up a bit, and this first thing I plugged in was a chrome book. Seems to be working perfectly.

It was double boxed, and shipped to my house in 3 business days. The unit looks basically brand new, no finger prints on the screen or marks on the unit of any kind.

I need to do some type of capacity test on it now.
 

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Bryanbr said:
My $641 dollars AC200P just arrived. State of charge was 87% on arrival. I charged it up a bit, and this first thing I plugged in was a chrome book. Seems to be working perfectly.

It was double boxed, and shipped to my house in 3 business days. The unit looks basically brand new, no finger prints on the screen or marks on the unit of any kind.

I need to do some type of capacity test on it now.
Click to expand...
WOW What a smokin’ deal! ????
 
Bryanbr said:
My $641 dollars AC200P just arrived. State of charge was 87% on arrival. I charged it up a bit, and this first thing I plugged in was a chrome book. Seems to be working perfectly.

It was double boxed, and shipped to my house in 3 business days. The unit looks basically brand new, no finger prints on the screen or marks on the unit of any kind.

I need to do some type of capacity test on it now.
Click to expand...
This makes me happy, I ordered 1 ($624 to VA) when this thread started but I'm still waiting for it to be delivered to the east coast, tracking shows Friday/tomorrow. Definitely update with any issues if you have any
 
Just got my EB70 today! It arrived in the original packaging with all accessories. A few incredibly minor scuffs on it that came right off with a magic eraser. My unit came in gray instead of the blue or green as stated in the listing, but that's just fine - and preferable by me! It arrived basically empty, so charging it up now and will do a quick capacity test later. But... so far, really impressed considering the price. If only I could have justified the AC200p - just an incredible deal it seems.
 
My EB70 just arrived. Red, original box with all the accessories. It looks like it was new in the box. It was low on charge(AC charging now). The only thing out of order was the AC cord. It was twisty tied, but not tightly wrapped. I am happy with the purchase. Thanks Maxoak........A great product at a price I couldn't refuse. Please do the same with the AC300 then I'll be really happy.
 
I am still on the fence for the EB70. I hope to see test result from both of you before the sale ends. $205 is really tempting!
I am also curious about battery being drain even though the unit is supposedly turned OFF since I do not see hard switch for ON/OFF.
 
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Looks like the AC200P is sold out on their website now but still shows on AliExpress as noted in the 2nd post of this thread
 
Just completed my first DC capacity test on the refurb EB70: Ran the test using the cigarette DC output and it maintained 12.8 volts for the duration of the test. I set it to pull 5 amps (about 64w) and it died 10 hours and 11 minutes later with a capacity of 656Wh. So, def not bad at all.
 
I wonder how many returned units that Bluetti get to be able to resell them as Renewed, some of these models were released for sale not too long ago also.
 
Djnorth is my brother and I am the guy who bought two refurb ac200p’s. They arrived is what appears to be like new condition, they fully charged and all functions appears to work. I purchased two additional chargers so I can try the dual charging but they have not arrived yet.I did notice that the two units have different firmware and as of yet I am unaware if it’s updatable by me or if it’s something that has to be done at the factory but it doesn’t seem to affect their behavior or performance. One unique thing about the chargers is that they have a cooling fan that runs even when it is finished charging the unit so don’t be surprised if the fans keep running you just need to unplug them when they’re done. I also noticed that when you touch the AC load button to see how much wattage is going out, it does not respond or show any wattage if you’re using AC for a small item with low wattage, when I plugged in an electric water kettle and turned it on it was showing 1648 watts. so far I am very pleased with the purchase.
 
Charging my car with $600 AC200P. Maybe I can get like 15 miles per day using the solar from this unit. I'll upgrade the setup if this is working.

As Will Prowse would say:

"It actually works!"

ac200p_car_charger.jpg
 
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I was able to run a DC capacity test from the lighter plug on my EB70. The output seems to be limited to exactly 10A, and voltage was a pretty consistent 12.2v while loaded.

It pulled 583 Wh and 47.8 Ah. I'm not sure what's up with the time on the display, but I think it ran just shy of 5 hours.

Stated capacity is 716 Wh. This test capacity of 583 Wh is only 81.4%, which seems a little low. I'll try testing again from a full charge, in case I messed something up.

Two photos are attached, one after everything stabilized at the start of the test and one after the test.

Edited for autocorrect.
 

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Tomtomtom said:
I was able to run a DC capacity test from the lighter plug on my EB70. The output seems to be limited to exactly 10A, and voltage was a pretty consistent 12.2v while loaded.

It pulled 583 Wh and 47.8 Ah. I'm not sure what's up with the time on the display, but I think it ran just shy of 5 hours.

Stated capacity is 716 Wh. This test capacity of 583 Wh is only 81.4%, which seems a little low. I'll try testing again from a full charge, in case I messed something up.

Two photos are attached, one after everything stabilized at the start of the test and one after the test.

Edited for autocorrect.
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Shouldn't you measure based on actual capacity (~616) rather than rated capacity (716) ?
 
Tomtomtom said:
I'm not sure I understand your question. Could you clarify?

Where did the 616Wh value come from?
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total noob question, doesn't bluetti set the depth of discharge (DoD) to only utilize 90% stated battery capacity, setting the usable max around 644? so 583 is closer to 91% efficiency?
 
dcswindler4 said:
total noob question, doesn't bluetti set the depth of discharge (DoD) to only utilize 90% stated battery capacity, setting the usable max around 644? so 583 is closer to 91% efficiency?
Click to expand...
That's a reasonable question.

I don't know what parameters the EB70 is using for depth of discharge. I didn't see that value written down anywhere. So, yes, all I can do is measure the overall capacity and overall efficiency without being able to differentiate which capacity losses are due to settings and which are due to circuit efficiency.

I did another DC capacity test, run the same as before, and came up with 586 Wh. Slightly higher, but basically the same.
 
Found this in the user manual of the EB70, so based on this you should expect 716 X 0.9 X 0.9 = 580....so those tests show it as being ever so slightly overperforming which (to me) seems excellent for a used unit, especially for the prices. They're not selling beat up units with tons of degradation. Wish I had gotten another AC200P and two EB70s before they sold out. 1637603445206.png
 
dcswindler4 said:
Found this in the user manual of the EB70, so based on this you should expect 716 X 0.9 X 0.9 = 580....so those tests show it as being ever so slightly overperforming which (to me) seems excellent for a used unit, especially for the prices. They're not selling beat up units with tons of degradation. Wish I had gotten another AC200P and two EB70s before they sold out. View attachment 73205
Click to expand...

The test is being run from the DC plug, so the inverter efficiency isn't at play here. That would mean 716 x .9 = 644.4, so based on the results of the test, it puts it at that 90.5% rated capacity. Still not bad considering the price though. I'm regretting not grabbing one.
 
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