Hello. I have a problem with a Kiano tablet, the device does not want to charge the battery on a connected charger. It turns on only on the charger for a moment and then turns off immediately. I took apart the tablet and measured the voltage on the 4.7V battery. After switching on, it squeaks...

I would try with a different battery anyway. Read more about this topic

Desolder the battery, plug in the charging, check the voltage on the pads where the battery was soldered.

.... it should be around 4.20V Peel off this cover so that the electronics can be seen and add clear photos in high resolution. Of course, you connected the power supply to the power socket and not to one of the USB from what I remember, some KIANO models only charge the battery from the power socket. And the USB sockets are HOST USB and the other separate is the OTG socket.

So I connected to the power socket, that's exactly how you write 2 usb and one power supply

Check the charging system EUP8207 Wide supply voltage range: 4.8V to 20V - 4.2 version Other designation of the LP28200A system

Thanks for helping me out on the weekend after checking out Added after 18 [hours] 51 [minutes]: I measured the voltage according to EUMP 8207 diagram, 1- 0 2- 5.14V 3- 5.14V 4- GND 5- 0 6- 0.25V 7- 0.25V 8-0

Have you measured this voltage on a soldered battery? What battery does it go there? 3.7V or 7.2V?

It's hard for me to say they are 2 connected together. I have an idea to buy rechargeable batteries together to 4.8V and try if it will work. The charger is 5v 2A. I measured on a soldered battery

The battery is usually on: 3.7V max charged to 4.2V and 7.4V max charged to 8.4V Strip these black tapes and check each link separately. Provide the model of this KIANO And smell if the battery does not smell such a sweet smell lithium, if so it is damaged put it in a bag and close tightly and recycle the vapors are poisonous.

Kiano Tablet Charging Issue: Turns On Briefly, Battery Voltage 4.7V - Seeking Solutions

seba1001 8253 11

Treść została przetłumaczona

Zobacz oryginalną wersję tematu

Reply | New topic

#1 16724306 27 Sep 2017 17:21

seba1001 seba1001

Level 10
» |

Post #1
16724306 27 Sep 2017 17:21

Hello. I have a problem with a Kiano tablet, the device does not want to charge the battery on a connected charger. It turns on only on the charger for a moment and then turns off immediately. I took apart the tablet and measured the voltage on the 4.7V battery. After switching on, it squeaks all the time to connect the charger. Maybe anyone has any idea?

Attachments:

IMG_0870.JPG Download (110.67 KB)

IMG_0869.JPG Download (104.08 KB)
ADVERTISEMENT
#2 16724449 27 Sep 2017 18:29

nutergsm nutergsm

Moderator of GSM

» | Helpful post? (0)

Post #2
16724449 27 Sep 2017 18:29

I would try with a different battery anyway. Read more about this topic https://www.elektroda.pl/rtvforum/topic1741142.html
ADVERTISEMENT
#3 16724927 27 Sep 2017 21:12

gradek83 gradek83

Level 42

» | Helpful post? (0)

Post #3
16724927 27 Sep 2017 21:12

Desolder the battery, plug in the charging, check the voltage on the pads where the battery was soldered.
#4 16725335 28 Sep 2017 05:45

seba1001 seba1001

Level 10

» | Topic author Helpful post? (0)

Post #4
16725335 28 Sep 2017 05:45

I have already checked 0.32V.
ADVERTISEMENT
#5 16725582 28 Sep 2017 10:17

gradek83 gradek83

Level 42

» | Helpful post? (0)

Post #5
16725582 28 Sep 2017 10:17

.... it should be around 4.20V
Peel off this cover so that the electronics can be seen and add clear photos in high resolution.
Of course, you connected the power supply to the power socket and not to one of the USB from what I remember, some KIANO models only charge the battery from the power socket. And the USB sockets are HOST USB and the other separate is the OTG socket.
#6 16726090 28 Sep 2017 15:12

seba1001 seba1001

Level 10

» | Topic author Helpful post? (0)

Post #6
16726090 28 Sep 2017 15:12

So I connected to the power socket, that's exactly how you write 2 usb and one power supply
#7 16726755 28 Sep 2017 20:50

gradek83 gradek83

Level 42
» | Helpful post? (+1)

Post #7
16726755 28 Sep 2017 20:50

Check the charging system
EUP8207

Wide supply voltage range:
4.8V to 20V - 4.2 version

Other designation of the LP28200A system

Attachments:

EUP8207.pdf Download (649.55 KB)

LP28200.pdf Download (833.4 KB)
#8 16726939 29 Sep 2017 16:40

seba1001 seba1001

Level 10

» | Topic author Helpful post? (0)

Post #8
16726939 29 Sep 2017 16:40

Thanks for helping me out on the weekend after checking out

Added after 18 [hours] 51 [minutes]:

I measured the voltage according to EUMP 8207 diagram,
1- 0
2- 5.14V
3- 5.14V
4- GND
5- 0
6- 0.25V
7- 0.25V
8-0
ADVERTISEMENT
#9 16728700 29 Sep 2017 21:18

gradek83 gradek83

Level 42

» | Helpful post? (0)

Post #9
16728700 29 Sep 2017 21:18

seba1001 wrote:
battery voltage 4.7V

Have you measured this voltage on a soldered battery?
What battery does it go there? 3.7V or 7.2V?
#10 16728763 29 Sep 2017 21:40

seba1001 seba1001

Level 10

» | Topic author Helpful post? (0)

Post #10
16728763 29 Sep 2017 21:40

It's hard for me to say they are 2 connected together. I have an idea to buy rechargeable batteries together to 4.8V and try if it will work. The charger is 5v 2A. I measured on a soldered battery
#11 16728808 29 Sep 2017 21:59

gradek83 gradek83

Level 42

» | Helpful post? (0)

Post #11
16728808 29 Sep 2017 21:59

The battery is usually on:
3.7V max charged to 4.2V
and
7.4V max charged to 8.4V

Strip these black tapes and check each link separately.
Provide the model of this KIANO
And smell if the battery does not smell such a sweet smell lithium, if so it is damaged put it in a bag and close tightly and recycle the vapors are poisonous.
#12 16731529 01 Oct 2017 16:37

seba1001 seba1001

Level 10

» | Topic author Helpful post? (+2)

Post #12
16731529 01 Oct 2017 16:37

The battery smells sweet. Kiano 10 Dual. One cell has 2.8V. The other has 1.8V
Create an account, log in and become active in a forum and ads will not appear. You will receive points by participating in discussions.
Join this discussion.

Install the application

Reply | New topic

Report a violation of the law

Topic summary

The discussion revolves around a Kiano tablet that fails to charge, turning on briefly before shutting down. The user measured the battery voltage at 4.7V and reported a continuous squeaking sound when attempting to power it on with the charger. Suggestions include testing with a different battery, desoldering the battery to check voltage on the pads, and ensuring the charger is connected to the correct power socket, as some Kiano models only charge from the power socket. Further measurements revealed voltages of 0.32V and 5.14V at various points in the charging system. The user identified the battery as having two cells, with one at 2.8V and the other at 1.8V, and noted a sweet smell indicating potential damage. The model in question is the Kiano 10 Dual.
Summary generated by the language model.