Battery for Pebble Time Rotary Battery clock Li Polymer rechargeable to Replacement battery polymers Pack 3.8 V 58 mAh + binary|Digital Batteries| - AliExpress
A quick guide on getting a battery for your Pebble Time steel and replacing it (since there is surprisingly none on the web!). : r/pebble
Battery for Pebble Time Steel Watch Accumulator 2-wire tools 3.8V 250mAh SP551923AE | Buy now on Mitikotec.it
Pebble Time Battery Replacement - iFixit Repair Guide