Bluetti AC200 Battary cell type

robby69

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Hello

unfortunately all the reviews of the AC200 (as 99% of all powerbank reviews) do not look at the most important part of a power bank, the battery cell specification.
They just believe the users guide spec. and do a simple power test. But what happens after charging 100 times, how hot they will get wheny cycling, aging of capacity, internal resistant etc. So I would be interested in the battery cells used in the AC200. Does someone of you know which ones are used in the AC200 and where to find the spec?

Thanks
Robby
 

MrNatural22

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Hello

unfortunately all the reviews of the AC200 (as 99% of all powerbank reviews) do not look at the most important part of a power bank, the battery cell specification.
They just believe the users guide spec. and do a simple power test. But what happens after charging 100 times, how hot they will get wheny cycling, aging of capacity, internal resistant etc. So I would be interested in the battery cells used in the AC200. Does someone of you know which ones are used in the AC200 and where to find the spec?

Thanks
Robby

AC200 teardown

 
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Forbisher

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Hello

unfortunately all the reviews of the AC200 (as 99% of all powerbank reviews) do not look at the most important part of a power bank, the battery cell specification.
They just believe the users guide spec. and do a simple power test. But what happens after charging 100 times, how hot they will get wheny cycling, aging of capacity, internal resistant etc. So I would be interested in the battery cells used in the AC200. Does someone of you know which ones are used in the AC200 and where to find the spec?

Thanks
Robby
14 LG NMA pouch cells.
Bluetti is claiming 1200 cycles to 80%
3C charging or was that 5C? I forget.

Bluetti's spec posted all over is 2500 cycles to which they hide that is to 50%
 

robby69

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Thanks for the replies but it would be nice to have a cell manufacture product number or spec of the cells. To really see what the quality of the cells are. I guess the reason why no powerbank manufacture (including Bluetti) reveal the exact cell type and spec of the cells they are using is because people would be very dissappointed what they really get out of the powerbank after some cycling or some years. Unfortunately nearly no manufacture design thier products to include a possibibility to replace cells. It is strange that all this testers and reviewers are not interested in the cells quality and long-term capacity or replacable cells they all just more or less explain the users guide....
 

Forbisher

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Thanks for the replies but it would be nice to have a cell manufacture product number or spec of the cells. To really see what the quality of the cells are. I guess the reason why no powerbank manufacture (including Bluetti) reveal the exact cell type and spec of the cells they are using is because people would be very dissappointed what they really get out of the powerbank after some cycling or some years. Unfortunately nearly no manufacture design thier products to include a possibibility to replace cells. It is strange that all this testers and reviewers are not interested in the cells quality and long-term capacity or replacable cells they all just more or less explain the users guide....
The cells really are made by LG and NMA so they are quality.
LG does not make crappy cells.
I am pretty sure Bluetti said 5C charging on these cells.

Bluetti claims 1200 to 1400 cycles to 80% so let's say 1000 cycles.
Discharged 100% every day that's 2.7 years
Every 2nd day 5.3 years
2 times a week is 9.6 years.
Bluetti says the inverter has a limited life span.
There is no need to have replaceable batteries on an AC200.
$1800 list price so at 5 years that's $360 a year.
 

robby69

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Every 2nd day 5.3 years
2 times a week is 9.6 years.
ah ok and if cycled once per year it will last 1000 years....

Such calculations are crap.

Even if you do not cycle at all , all Lithium batteries are aging over time, especiall if they are fully charged. And fully charged is what you normally want to have on a power bank which should be fully usable if needed.

That’s why the Lithium batteries are only half charged when you buy them. So the cell capacity will last longer.

Have you ever stored a mobile battery 5 years? You can throw it away. It will not have half of the capacity after that time.

As you said it is still a "claim" from Bluetti but why not publish the LG cell datasheet if the cells are so good? I guess they know why....

The AC200 is too expensive just to through it away if the battery capacity has gone over time (and as I said even if it was not used/cycled much per year the capacity will vanish anyway).
 

Forbisher

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ah ok and if cycled once per year it will last 1000 years....

Such calculations are crap.

Even if you do not cycle at all , all Lithium batteries are aging over time, especiall if they are fully charged. And fully charged is what you normally want to have on a power bank which should be fully usable if needed.

That’s why the Lithium batteries are only half charged when you buy them. So the cell capacity will last longer.

Have you ever stored a mobile battery 5 years? You can throw it away. It will not have half of the capacity after that time.

As you said it is still a "claim" from Bluetti but why not publish the LG cell datasheet if the cells are so good? I guess they know why....

The AC200 is too expensive just to through it away if the battery capacity has gone over time (and as I said even if it was not used/cycled much per year the capacity will vanish anyway).
Lifetime aging is also a factor so all bets are off for over 10 years of life.
Your 1000 year extension is disingenuous so basically crap.

If you were paying attention you would know that Bluetti only made about 4500 AC 200s with 14 LG cells for the Indiegogo campaign and now only make the AC200P with 16 LFP cells of unknown brand.

I think the reason they ship Lithium batteries at 50% soc is for safety reasons required by carriers.
 
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