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Charging vi40 DC


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#1 Simola

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Posted 14 September 2012 - 03:27 PM

I was just wondering how people charge their vi40 DC.

I'M in the UK and as my vi40 didn't come with a UK charger I'm using my I-phone charger.

Is this OK or should I be buying a plug UK adaptor?

Just don't want to end up ruining the battery.

Thanks

#2 sas007

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Posted 14 September 2012 - 04:07 PM

I was just wondering how people charge their vi40 DC.

I'M in the UK and as my vi40 didn't come with a UK charger I'm using my I-phone charger.

Is this OK or should I be buying a plug UK adaptor?

Just don't want to end up ruining the battery.

Thanks

I got a charger from Eb y for the flytouch that fits onda vi40 was only a fiver

5V UK Mains Adapter Charger Power Supply for Onda Vi40 Tablet PC UK Plu5

Sent from my GT-I9100 using Tapatalk 2

Edited by sas007, 14 September 2012 - 04:10 PM.

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#3 hereu

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Posted 14 September 2012 - 04:35 PM

Mine came with an adaptor so I just use that with the supplied charger.

Any charger with the right voltage over 1amp should do the job but you should be looking to use a 2amp one as it will charge a bit faster.

If the IPhone one fits then it should be fine.

After a few charges the battery performs well and I notice I lose no charge as all when on stand-by.


If you haven't already, I would install the last custom firmware from valcoz :drinks:

#4 sas007

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Posted 14 September 2012 - 04:45 PM

Mine came with an adaptor so I just use that with the supplied charger.

Any charger with the right voltage over 1amp should do the job but you should be looking to use a 2amp one as it will charge a bit faster.

If the IPhone one fits then it should be fine.

After a few charges the battery performs well and I notice I lose no charge as all when on stand-by.


If you haven't already, I would install the last custom firmware from valcoz :drinks:

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#5 Simola

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Posted 15 September 2012 - 05:36 AM

Thanks for the responses.

I checked my iPhone charger and it's only 1 amp. I did notice that while using the tablet this charger struggled to charge. For now I'll use the supplied charger with an adapter but might get the one from e bay . Hopefully using the supplied charger will give me more umph with it being 2 amps!

I installed the custom firmware earlier this week and it seems a big step forward then the stock fw I was running.

Thanks

Edited by Simola, 15 September 2012 - 05:37 AM.


#6 ebsbow

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Posted 16 September 2012 - 05:21 AM

An htc charger 5v 1A works. I am using it right now( They also didn't include an adapter converter in the box, although I paid extra for one..)
Not sure if it is bad for the battery, but it is made to load through the usb as well, so I guess it will be ok.
The supplied one of 2A is better, and faster.

Maybe with an charger, and an usb connection it may be faster aswell..
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#7 fugitoid

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Posted 18 September 2012 - 03:12 PM

With great difficulty.

When battery drains below about 5%, it dies. Just will not charge. I have to do factory reset, and even that is v hard to do (like I have to try about 20 times)

I've checked the charger, and it's fine. Connection socket appears to be ok too - 4 times I've charged it to 100%.

3 times I updated firmware, then lost charging ability. So 4th time I just did factory reset and stayed with same firmware, but same result.

And now I can't get it to charge at all. Can sometimes get it past the onda splash screen, but then it will show like 3-5%, then start draining, not charging (I don't start any apps or connect wifi).

It's driving me nuts.

Oh, and when booting into safe mode for factory reset, it says not able to mount sd card. I'm new to android, and not sure if thats meant to happen?

Edited by fugitoid, 18 September 2012 - 03:18 PM.


#8 ebsbow

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Posted 19 September 2012 - 04:08 PM

Did you try to flash the custom Vi40D_v1.4-EN03? It works just fine.
If you have an bad flash, then using the factory reset isn't going to do anything better.
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#9 fugitoid

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Posted 20 September 2012 - 02:26 AM

Did you try to flash the custom Vi40D_v1.4-EN03? It works just fine.
If you have an bad flash, then using the factory reset isn't going to do anything better.

I flashed Vi40D_v1.1-0711. Seemed ok at first, then, after about a week, charging went a bit weird. Was displaying 100% when i knew it wasn't fully charged. Then displayed 0% for hours. Then died and couldn't be started. Did factory reset, in case it was a dodgy app or flash (though I haven't read of others having problem with that fw). Worked for a few days, but when battery drained too low, it just wouldn't take a charge.

Did this 3 times. Now on 4th factory reset, but will not charge.

Think I'm going to have to return it to vendor (several thousand miles away). Maybe it's a hardware fault

(I can't flash anything now, cos I can't get it to charge)

Edited by fugitoid, 20 September 2012 - 02:29 AM.


#10 Sopper

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Posted 20 September 2012 - 03:14 AM

If you don't mind warranty, you might wanna try to solder the battery loose and back on again.
Onda VI40 Dual Core (Modded 1.5 Repack)
Onda VI30 Dual Core (Modded 1.5 Repack)
Onda V711 Dual Core (Official 1.5 Firmware)
Teclast P85 Dual Core (Official JB 2.00 firmware)
Zenithink C97 Dual Core (Official 4.1 JB firmware)

#11 ebsbow

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Posted 20 September 2012 - 03:35 AM

I would suggest flashing the custom Vi40D_v1.4-EN03, and try to recalibrate the battery.

edit;
about the battery soldering. I did it with an 7" and it did the job.
The battery wasn't able to go beyond 40% after 2 years. Now it holds 10H of screen on, at 10% brightness, and music play again. It's magic.
Just cut the cables and recontacted them if you are no soldering guy. Try software calibration first if possible.

Edited by ebsbow, 20 September 2012 - 03:43 AM.

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#12 sgarat

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Posted 20 September 2012 - 11:30 AM

I have a doubt about the charging, is it normal that the tablet drains the battery when connected to the power supply?

#13 Sopper

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Posted 20 September 2012 - 11:58 AM

I have a doubt about the charging, is it normal that the tablet drains the battery when connected to the power supply?


No, it's not normal...
This can be caused by using a different usb-cable.
Every brand and every device uses it's own specific usb cable, some can not replace each other and can even work visa versa, like draining instead of charging.
Try a different usb cable.
Onda VI40 Dual Core (Modded 1.5 Repack)
Onda VI30 Dual Core (Modded 1.5 Repack)
Onda V711 Dual Core (Official 1.5 Firmware)
Teclast P85 Dual Core (Official JB 2.00 firmware)
Zenithink C97 Dual Core (Official 4.1 JB firmware)

#14 Simola

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Posted 20 September 2012 - 12:14 PM

No, it's not normal...
This can be caused by using a different usb-cable.
Every brand and every device uses it's own specific usb cable, some can not replace each other and can even work visa versa, like draining instead of charging.
Try a different usb cable.

This is really interesting.....

Just so I'm clear.....I've experienced this issue of battery draining while charging. I assumed it down to poor design. But.....as the charging cable that came with the tablet is so short I purchased a USB extension cable to make it easier tocharge and use the tablet at the same time

I'be also noticed that the tablet takes many many hours to charge.

Could these 2 issues relate to the USB extension cable?

Thanks

#15 Sopper

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Posted 20 September 2012 - 12:30 PM

This is really interesting.....

Just so I'm clear.....I've experienced this issue of battery draining while charging. I assumed it down to poor design. But.....as the charging cable that came with the tablet is so short I purchased a USB extension cable to make it easier tocharge and use the tablet at the same time

I'be also noticed that the tablet takes many many hours to charge.

Could these 2 issues relate to the USB extension cable?

Thanks


I have had more then 10 different tablets, and several mobile phones.
I think i have aprox 12 different usb cables, different brands and different lengths.
I can garantee you that most of them are different and NOT work the same.
Onda VI40 Dual Core (Modded 1.5 Repack)
Onda VI30 Dual Core (Modded 1.5 Repack)
Onda V711 Dual Core (Official 1.5 Firmware)
Teclast P85 Dual Core (Official JB 2.00 firmware)
Zenithink C97 Dual Core (Official 4.1 JB firmware)

#16 sgarat

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Posted 20 September 2012 - 12:41 PM

That's what I've done too, an usb extension cable, but not sure if that happened with the provided cord. I'll take a look at it right now.

I forgot to mention that it only happens if I'm using the tablet, not when it's standing by.

#17 fugitoid

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Posted 20 September 2012 - 01:17 PM

Thanks for the ideas.

Not sure I'm ready for taking the thing apart just yet.

Not sure about the cable being the issue either - It worked fine in the beginning.

But I'm getting rather fed up with my wife's "shoulda-bought-an-iPad" comments :-/

#18 Simola

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Posted 20 September 2012 - 03:16 PM

I have had more then 10 different tablets, and several mobile phones.
I think i have aprox 12 different usb cables, different brands and different lengths.
I can garantee you that most of them are different and NOT work the same.

Thanks. ...I'll ditch the extension cable and see how charging improves.

#19 sgarat

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Posted 20 September 2012 - 03:46 PM

Definitely it's the extension cord. If I remove the usb extension, the tablet charges normally even watching movies, downloading files from the internet.

Thank you, Belkin usb extension cord for nothing :angry:

#20 fugitoid

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Posted 21 September 2012 - 02:18 AM

Update is that I got the thing up and running again. Did a hard reset with the pinhole, then after a LOT of attempts, managed to squeeze enough juice to boot into safe mode and did factory reset from there. After a few hours, charged to 100%.

So I'm back to original firmware, and will try to flash the suggested version.

I will do my darndest to never let the power fall below 10% ever, ever again. Just in case.

And pretend to my wife that all this stuff was meant to happen, and that iPad is still a waste of money.