[Paco]

@steve

I am afraid I don’t know how to help you. If it really is shot beyond repair, (I assume you checked batteries give voltage at the tabs where they are soldered, but no current at the cables that go to the computer, then best hope is to reflow all the points, maybe twist and bend the board a little bit or something, like Chupa suggested.) You might as well ask one of the chinese battery masters, maybe they have something to help you (In China, everything is possible). The one I talked to seemed to know his stuff. Worst case scenario, you have to buy one of those full battery units, or perhaps deal with GB (or whomever) support, if you can.

Again, I am no expert. Hopefully someone else can give you better advice. Or somebody can just point you to the spare board. I didn’t know how to even look for it.

Galen G. Cortes wrote:

Hi Paco, Online store link, pls.

@Galen G.Cortes

I am sure you are smart enough to figure it out on your own. Especially since you had the energy to ask for it three times.

However, it is not just your fault that the useful messages get buried. Nobody with a problem like this should be expected to fully read 16 pages of a thread.

There should be a better way to handle this. Sorry if I sounded a bit rude. Es sólo mi opinión.

Paco

[Paco]

Picture.
One more thing: if you need to, I encourage you to contact the seller. He replied to me quickly and was helpful. He knows what he is selling.

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[Paco]

Hello everyone,

As I said, I ended up wiring the batteries as they came from the factory, and as seen in this thread. New wires where old ones were. Not as in seller’s picture. (Chances are it doesn’t actually matter. I am still waiting for someone with more knowledge to come and tell us the difference.)

Also, to manually charge the batteries, You can use a regular 5V 2A charger (I used 5V 1.2A, did it gently, but perhaps took too long). I just cut and stripped the wires and tied them to the battery terminals best way I could. Checked regularly with the multimeter to see the voltage, stop at 4.3V. Check temperature regularly, if they get hot to touch, stop. You can read my previous messages for more details.

It seems that I was the only one with this problem, though. Probably you should be fine if both cells come at the same voltage from the beginning. I didn’t check them when I first got them. That was my mistake, I think.

Keep in mind as well that I am completely new to this (Bought a soldering iron and a multimeter to do this). I was asking for advice the whole time. Now I am just sharing my experience.

Good Luck

Paco

[Paco]

Here is the picture… struggling with the same error I was getting before.

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[Paco]

Ok, this is definitely working now.

4 hours and 30 minutes of video playback (Looping a movie using the Movies and TV app) at 40% brightness and 10% volume. Still 60% strong.

Still falls into “light use” (look at HW info chart, Movies & TV UWP app is quite efficient), but still, this is over 8 hours of battery now. Before it was less than 3.

Least I can do is recommend the seller (H BBA). And, I also recommend checking the voltage of the cells when you first get them. If it is not equal for both of the cells, charge them manually. Be careful not to overcharge them, though. Watch the temperature. It would have saved me a big headache.

Paco

[Paco]

Ok, so I have promising results now.

First discharge was very good, almost 7 hours of mixed/light use.

Second discharge, also good over 5 hours, with 2+ hours of playing a game (reaching the 9w TDP most of the time) also some video playback.

Still a bit of battery left; goes to hibernate at 4% and after 15 minutes, computer can be turned on again at 7 to 14% (third time now).

 

Chinese seller was right, it seems. After fully charging both cells manually (both to 4.3V), it now seems to be working as expected. Nothing was faulty.

He proved as helpful as this thread. (To his advantage, of course). Also, I wired the batteries as instructed in this thread; new wires where old ones were. Not as in seller’s picture above.

I will update if there is something new. But for now I am happy. Let’s see how long this lasts.

 

Paco

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[Paco]

Tomorrow I will solder the batteries again, see whether this worked.

Almost forgot.

Seller also sent me this picture:

This is not the same as we were doing it, now is it?

Please take a look at it and comment.

 

@Giannis

I am in a similar situation: Bought same batteries, however I am struggling to make them work properly. I also think something is not completely right with the way we are doing this. Maybe we can find the solution

Paco

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[Paco]

For some reason I get error:

ERROR: Your reply cannot be created at this time.

See image

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[Paco]

I have an update:

I talked to the seller and he replied quickly.

He says I should unplug both batteries, charge them individually to 4.3V, and only then plug them together to the computer board.

Seemed reasonable to me.

I asked him how should I charge them individually, and he said I could use a regular 5V 2A charger.

I guess it is time for me to cut some wires.

Did any of you have to do something like this?

[Paco]

Quick update:

Funnily enough, after putting everything back together, and turning the EzB back on, battery has dropped about 40%. I attach BatteryBar screenshot.

(53% now that I am writing this, less than 15 minutes after)

Paco

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[Paco]

Hi,

Thanks all of you for the input, and sorry for the delay.

I opened the EzBook again to see if I could find something strange. Solder points seemed ok, and battery was sitting well there; didn’t seem too crammed inside, despite the extra thickness.

Then, (after having charged the battery) I decided to check with a voltmeter, and found that one of the batteries was giving a solid 4.1 V (to be expected when full) while the other on the left was giving around 3.8 V. Total voltage was 8V.

Is this normal?

I attach some pictures.

 

@chupa

Thanks for the good advice. I will do, but at the moment I don’t have one of those to test. I live in a somewhat remote location and it will take for me a few days to get one.

However, I still want to believe that the issue is other than the batteries being faked capacity. Weight checked properly, and seller seemed legit to me. Even then, they are labeled 8100 mAh each. For this kind of result, they would have to be like 2x 2000 mAh or something. Which would be too little for over 200grams, even for a Chinese scammer, I believe.

 

Maybe they aren’t being properly read or charged or something?

I am new to this; maybe I simply did something wrong.

Paco

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[Paco]

Mmm

Second charge cycle, 100 to 5% in just over 2 hours idling. Disastrous.

The thing is, It is hard for me to believe that the 200+grams batteries are bad. Seller seemed legit.

It must be that something else is wrong.

Battery bar always reported 48000 mWh, which is wrong from the beginning, which was obviously wrong. Perhaps the system is not treating the new batteries correctly.

Please, advice. I must have done something wrong or something.

I summon all of you battery masters, in my time of need.

 

Paco

[Paco]

max wrote:

Paco wrote:

Hello everyone, I am new here. Today I replaced my EzB 3Pro batteries with two of these: https://www.aliexpress.com/item/L463-3-7V-8100mAH-4812080-PLIB-polymer-lithium-ion-battery-for-tablet-pc-power-bank/32800900225.html?spm=a2g0s.9042311.0.0.27424c4djQRltw ……….

let us know how they go. if you do not use old batteries I would be interested in buying them, I am Italian.

You mean you want my old original batteries which last less than 3h? Wouldn’t it be better to you to order other ones?

At first I did not really understand, but now I am afraid I am beginning to see why.

First charge cycle, charged in 2h 5min, Discharge: on track to being faster than that. First 15% down in less than 15 minutes. While idle.

I know it is soon to tell, but this does not look good at all.

I call out to everyone reading this:

Has anyone actually done this with a clear satisfactory result? Is anyone getting anywhere near the advertised 7-8 hours of light use?

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[Paco]

Hello everyone, I am new here.

Today I replaced my EzB 3Pro batteries with two of these:

https://www.aliexpress.com/item/L463-3-7V-8100mAH-4812080-PLIB-polymer-lithium-ion-battery-for-tablet-pc-power-bank/32800900225.html?spm=a2g0s.9042311.0.0.27424c4djQRltw

It was really easy, no previous soldering experience. (Hardest part for me was removing one of the battery screws, which I striped like the newbie I am):

They are 106 g each, whereas the original ones weigh only ~70 grams. They fit in the original frame; only a bit thicker. Provided the seller is as honest as he says, I should expect a substantial difference. Just the difference in mass is close to 50% more than the original ones. ~25€ and ~20 days to Spain.

Will it be too much to hope to reach the advertised ~7h of light use? I was getting less than 3 hours before the replacement.

I will comment once I find out.

In the meantime, I will be happy to hear if you have any advice to give, those of you with more experience.

I attach some pictures.

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