Bad EZBook pro batteries – How to replace step by step

[Chupa]

make a screenshot from batterybar when it is fully charged
did you take a picture compare the size from old and new battery?
where are the batteries from and how much did the cost?

Need Help?
1981 soldered my first Sinclair computer 1K, tapedeck * 1984 build and sold IBM clones 8Mhz, 512K, 20MB HDD * 2018 messing with ultrabooks

[Tolga Vural]

The new battery I bought it from Turkey and most probably it is Chinese size is 10 cm to 7 cm. Which cost me 8 USD each.

Picture is as attached

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[Chupa]

The shown data can not be correct.
charge to 100% , unplug

set scree to maximum brightness and play a youtube video in hd 720p and full screen until computer shuts down or goes into standby.
that should be around 12 watt/h
your battery should last in this test for around 4 hours, check every 30 minutes and write down the Dolum Orani, Full Runtime and Kapasite left.

if your new battery was smaller AND lighter in weight it might been a cheap one with just 25 to 35% of the printed on capacity.
The first what you do with a new battery is check the weight. high weight = high capacity

The Jumper expects a standard battery capacity and most models are not designed to report and recalculate the true capacity, only how much they can store and use.
A cheap battery is always a low capacity battery, no matter what they write down.

Need Help?
1981 soldered my first Sinclair computer 1K, tapedeck * 1984 build and sold IBM clones 8Mhz, 512K, 20MB HDD * 2018 messing with ultrabooks

[Tolga Vural]

This morning I installed different battery program to check also the windows standard battery indicator shows around 4.5 hours and all other do so.

I think battery bar has got a problem as when i have started this morning on battery it was showing 34 minutes left where windows was 2 hours 45 minutes

Now it has been 50 minutes that i’m using the laptop battery bar shows 38 minutes  windows shows 2 hours 5 minutes and at 43 %.

I will do as you mentioned will leave it open during the day but for instance it seems ok for 4-5 hours

 

[Cardoso]

Still waiting for mine. I’ll post here once all done.

Meanwhile I’ve received a voltmeter and decide to measure the batteries (they have been removed from ezbook for over a month). See the pics for results. Maybe someone can shed some light on the results because I don’t understand.

Remember my ezbook would not stay on, even for a second, if the power supply was unplugged.

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[Carlos]

Windows battery indicator on mine jumper always show inaccurate time, battery bar is more accurate ,with stock and defective battery on battery bar show around 2.5 hours and windows show 7h ,the reading on battery bar is more real since I get around 2 hours before jumper turn off with no warning , sometimes I have like 30% or 50% on battery bar and pc shut down with no warning and when I press power I get red empty battery logo on screen

[Tolga Vural]

For instance on the battery bar it shows 1 hour 56 minutes and it seems that this the real value. I was expecting much better with 5000 mah.

There should be something to increase that, i’m also thinking about the windows update, will try it for while and if it does not get better will restart with a clean windows install.

[steve]

So because my ezbook now dies with 20% charge and takes <10 minutes to go from 50-20 i’m in need of help.

bloody shoddy cheap batteries!

how easy it for a novice this battery replacement?

[Tolga Vural]

if you know how to solder it is not a big deal

[shaolinjordan]

thanks for all the advice. I just ordered 2 of the battery on the link due to the same problem with my ezbook. Will report back later.

Interestingly, there’s  other batteries from the same seller that in the reviews section looks like lots of people have installed in their ezbook 3 pros… cant find an example right now but i guess its being done. the 2x6600MAH seems the highest capacity though.

I also ordered this charger since shitty charger may screw up the battery. (tip: message the seller for power cable of your country)

https://www.aliexpress.com/item/12V-3A-AC-Power-Adapter-Charger-For-Jumper-EZbook-3-Pro-ultrabook-With-Power-Cord/32819040979.html?spm=a2g0s.9042311.0.0.3da24c4dKRfIkH

will keep you updated

[Chupa]

charger looks good

Need Help?
1981 soldered my first Sinclair computer 1K, tapedeck * 1984 build and sold IBM clones 8Mhz, 512K, 20MB HDD * 2018 messing with ultrabooks

[steve]

Tolga Vural wrote:

if you know how to solder it is not a big deal

this would be my first time, as i dont even own one

[Chupa]

4.35 shows full charge
3.47 shows totally depleted battery
7.79 shows both batteries in row

so you have one what works and one what is either defect or does not get charged because the charger part is defect (inside the battery where all the cables lead to the computer.

a defect battery does kind of  block the power from the good one

and regarding windows 10 battery info

M$ has not done one proper OS since they bought one and sold it to IBM as IBM DOS 1.0
and 10 is the worst with new alpha versions coming up as redstone 1-5

Need Help?
1981 soldered my first Sinclair computer 1K, tapedeck * 1984 build and sold IBM clones 8Mhz, 512K, 20MB HDD * 2018 messing with ultrabooks

[Sx C]

For anyone who needs to replace their batteries can consider ripping a xiaomi 10000mah power bank 2 instead, i’ve done this a couple of time for diy projects and its good to know that you are getting quality batteries. From memory i believe the battery dimensions are 110mm * 60mm * 11mm(stack of 2 battery) and they are rated at 3.85v as well.

[Chupa]

if you have space for a 3 mm battery a nearly double so thick might proof tricky when trying to close the bottom plate

Need Help?
1981 soldered my first Sinclair computer 1K, tapedeck * 1984 build and sold IBM clones 8Mhz, 512K, 20MB HDD * 2018 messing with ultrabooks

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