Blaze won't hold the charge

[Trump2016]

I swapped out the battery in my Blaze with a tested and working new one because it wouldn't last longer than an hour. After a day of use, it is now doing the same thing.

Is this a firmware issue? I inspected the PCB with a microscope and saw no obvious external issues. I saw similar posts with battery replacements. 

Moderator edit: updated subject for clarity

[MarreFitbit]

Welcome to the Community Forums @Trump2016! I'm sorry for the late response. Thanks for troubleshooting your Blaze's battery prior to contacting us. 

I'd recommend restarting your Blaze one more time. Then, let your device to run out of battery to charge it again. Keep an eye on it to see how the battery goes. You can also see: Can I extend my Fitbit device's battery life? 

We recommend to charge your trackers via the USB port over a wall adapter. However, it is also possible to charge your Fitbit tracker with a UL certified wall adapter. What may actually cause damage to the tracker's battery (either on a computer or a wall adapter) is the charging time, which if excessive over time may damage the battery and therefore cause quick battery drain or prevent the tracker from charging at all. 

Tips to best charge Fitbit trackers are:

• Use only genuine Fitbit charging cables
• Use only UL-certified wall chargers
• Avoid USB battery packs
• Charge at room temperature

For charging purposes, your charging cable can be plugged into any USB power source, including but not limited to:

• A computer
• A Wall A/C to USB adapter, commonly found with smartphones
• A DC to USB adapter (vehicle power port)

Let me know if you have any questions present. 

[Trump2016]

It appears you did not read my post. 🙂

I replaced the battery with a new one, and it still didn't hold a charge. It is likely it was a hardware issue draining it, but nothing was immediately obvious on the PCB. Without a schematic it is hard to troubleshoot. I do give props for a modular and easy to repair design, but the Blaze has a very shoddy back plate which can break when simply removing screws. Nothing hot snot or super glue can't fix though. 

Apple Watch time. The availability of repair information (even though Apple hates independent repair) tips the balance for me. I feel like repairability and ruggedness are ways to beat apple in this realm, but Fitbit doesn't tick these boxes currently. Godspeed Fitbit!

Edit: My subject was updated with incorrect title capitalization, and grammar. I speak English natively, and did not make these errors.