Thor 4 battery replacement success

1

Hello crew…
I have teplaced the battery on the THOR 4 DUAL.
It now turns on…
But I have a problem.

When I connect it to the charger, it does not charge and instead, just turns off the watch.

Any thoughts, ideas, direction would be great.

Thanks.

G.

2

Is it an original battery? It seems like the charge controller is not the right one. This is soldered onto the battery cell.
I personally would try to use the original battery charge controller.

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3

If you do need a original battery try this

#Aliexpress ￡20.64 5%OFF | original Rechargeable Polymer Battery For zeblaze thor 4 dual thor 4 plus pro 4dual thor 5 thor pro Smart Watch clock battery

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4

Thanks for the fast reply guys…

Yes, I purchased the original battery from Aliexpress.
In fact, it was from the same source you provided as a link.

What do you mean “charge controller”?
Do you mean the actual charge cable?

Thanks again crew,
G.

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5

If you remove the upper glue on the cables, you will notice that a small board is soldered between the cable and the battery cell:

20161006_183208
20161006_1832083024×4032 4.06 MB

I personally would try to solder the original charge controller including the original cable to the new cell.
I’ve done this with hundreds of Samsung Gear s SM750.

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6

After 6 months of owning the watch, it no longer allowed charging.
The battery was dead and I could not charge it.
I thought this was a battery problem, so I purchased a new factory battery and installed it myself.

I still have the same problem…
Because of this, I dont think swapping out the battery board would make a difference.

Do you know what the charging pin contacts on the back of watch are?
What is power and what is data?

I am begining to think there was nothing wrong with original battery and perhaps it is a problem somewhere along the “charging tracing” inside the watch…maybe a short somwhere.

When I connect watch to charging cable, the watch turns completely off.

There is a hard reset pin button, on the side of the watch.
Do you know how to hard reset the watch using this pin button?

Thanks so much for the help,
G.

7

It is definitely NOT a hard reset button. Please either use the “Reset Equipment” option or, if this should still work, flash the firmware. However, I don’t think either of these two ways will solve your problem.
Can you rule out that the charging cable is defective? Or the charger?
I do not know the pin assignment of this watch. The charging contacts are usually on the outside. However, this is quickly determined when you check the charging cable with a measuring device.

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