Paul K

I don't think so. The Pebble Time products have completely different chassis dimensions and motherboard shap; I believe they're thinner for example. The chassis dimensions and motherboard shape affect how much space there is for the battery. There are teardowns for the Pebble Time products; you should look at those to get some idea. You might have to disassemble your Pebble Time and use calipers to measure your existing battery. If you do that, please add that info to the relevant teardown article specific to your product. Also note which Pebble Time product you have. The Time Round, Time Steel, and Time (plastic chassis) are all different external dimensions and most likely have different batteries.

I didn't need to solder. The connector on board is fine, but it's just friction (and a piece of foam glued to the back) that keeps the cable seated in the connector. So my tearing was just the cable partially unseating. I never had the classic, but my issue was intermittent and for a while I was convinced rebooting the watch made a difference; kinda seemed to. There's forum threads that claim memory leak causes the tearing.

You can see a plastic clip on the right, so I understand the justification for prying on the right first. However, when I tried prying on the right, it separated the two halves of the speaker, ruining it. There was also a pad of foam, double sided tape under mine.

if I can find my T3 driver I'll pull my watch open and use the calipers. You just need the external dimensions of the battery?

Anyone found a source for these batteries? I've found the manufacturer but not a retailer.

Right, but that's like saying that TCP/IP runs on 802.3y, same as IPX/SPX. It's quite possible for Google to include a software stack for Thread without including a software stack for ZigBee. 802.15.4 means the hardware can support both, but that doesn't mean the device will support both.