Revised With New Information: The Dexcom G6 Transmitter Battery Replacement

@Timothy Please read above that epoxy kind “IB weld” is not recommended. That’s why I am asking what Silicone II Household Glue & Seal (GE280) alternative might be used.

I used to use JB weld on the original Dexcom transmitters before they started to limit everything. I never had a problem and it worked beautifully. Lots of people have their opinions. It’s not like the manufacturer recommends or warns against using anything. They don’t want you to do it at all.
We live in a world of “ try something and repeat if it works”
I used JB weld for a few years before they came out with the seven system and I switched to MM.
the person who asked the question did not have access to one thing so I suggested another.

Hi I need help. I change the Battery of my transmitter G6, I test the power and it works, but I am not able to pair it with spike neither xdrip. Can someone let me know if I am doing something wrong?
Thanks

The early G6 transmitters, starting with 80 and some 81s could reuse after battery change.

But Dexcom added more checks on newer G6 transmitters.

What is your transmitter id first 2 char?

Hi mi sensors are 80XXXX, so are the ones you can change the battery. But I do not understand why one of the changes worked great, and the other 3 I am not able to pair them. they have battery I checked.
So, I do not know why I can’t pair it with spike or XDrip. Any suggestions I will really appreciate it
thanks

Probably already did this, but…

Check your paired devices, and unpair all.
Confirm xDrip has correct transmitter id, and no current sensor started.
Maybe get latest version of xDrip.
Then try to pair again.
Maybe reboot phone.

Do you see the DexcomXX listed on bluetooth settings screen as available?
If not, battery may be fine, but transmitter BT may not be working.

Verify xDrip setting are for G6.
Are you using Native mode in xDrip?

HI
I really do not know if I am using Native mode in Xdrip. I only download xdrip to reset the clock and I was not able to. So, I really do not know how it works. The only thing I did was to connect the transmitter to a sensor to do it, but didn’t worked.
I do not see the DEXCOMxx listed in the Bluetooth , but I never see it until the dex is pair.
It is possible that changing the battery will affect the Bluetooth?

Usually I see the DexcomXX listed as available device when first pairing it.
Then select it, and then confirm xDrip can see it.
In xDrip, check the status (left side bar menu),
and event log (right side … menu).
Event log will show potential errors.

Personally, I think the problem is most likely that you broke an essential component. There’s lots of soldering and epoxying when changing the battery. If the solder or expoxy spilled over onto another connection… When you pried the last battery out, you might have pried something else off.

I assume you’ve already used a meter to check the voltage and resistance at both terminals, correct? What are you getting as a result?

If the voltage and resistance are sound, I’m not sure there’s much else to be done. Unless you can take the battery out again and look for loose parts or broken wires.

If they’re not good, it’s possible you’re shorting the connection between the two terminals. Crossed wired, or connected solder. Or just broke a battery connection and you need to lay a line of solder down instead.

It’s also possible you just reached the end of that transmitters life. Electronic components degrade with time, and don’t last forever. It isn’t just the battery that expires. I’m assuming the transmitters are built with cheap components because they’re only intended to be used for 3 months, there’s zero incentive for Dexcom to spend the money on higher quality parts.