Fitbit Charge 5 device

Heat the back with a heat gun at 130C to loosen the adhesive.

Pry the side opposite the connector area from the strap latch

Pry the top and bottom near the connector. There are small plastic pins.

TI 14WP6JP AFE4500 - Texas Instruments Ultra-Small, Integrated AFE for Bio-Impedance Analysis, Electrical Biosensing and Optical Bio-sensing

TI13AD5R8 BQ25156 - Texas Instruments BQ25 series 1S battery charger

121 2624 C72S - Unknown

Pry from the sides of the battery to lift out. There is some adhesive/foam between the battery and case

You will have to cut the flex cables to the capacitive touch buttons on either side

Peel the battery off and unplug

271617 unbranded battery. Marked as 65mAh

Mine tested at 24mAh, after a few years of use

761EJ1U1 - Mitsumi MC3761 series protection IC with integrated MOS-FET for protection of the rechargeable Lithium-ion or Lithium-polymer battery

A temp sensor somewhere

The can pops off easily with a razor blade starting at the corners

Hi Morgan 👋

2M AMA4B 212501 HADD - Ambiq Micro, Inc. Apollo4 Blue Lite SoC

QUAM V14 - Looks like a custom branded Fitbit chip

12110 U25A - Unknown

NXP 100TB2 VC95122 037-080 - Unknown

Is this the GPS receiver? (if not, where is it?)

Heat the screen to 130C

Push it out from inside

As the screen pushes out slightly, it should reveal 3x PH000 screws to undo (I ended up just cutting the metal tabs)

The bluetooth antenna is a spiral around the edge of the flex PCB

Raydium AMOLED controller