I attempted this fix over the weekend and was successful and very pleased with the outcome. The steps listed above was exactly what I needed to get the job done. The battery was a very tight fit, I feared that it may not actually fit. To get the job done, I used a magnetic screw tray to catch and hold the tiny screws and my Velleman adjustable temperature soldering iron to remove and attach the battery. The project was relatively quick, I took it slow since it was my first time soldering in many years, I estimated it took 20 to 30 minutes in total.

Helpful links:

Magnetic tray: http://amzn.to/2F5T29f

Velleman Soldering Iron: http://amzn.to/2EYYVBG

Battery: http://amzn.to/2ETRZdo

I fixed my blaze over the weekend using battery “Ofeely 3.7V 200mAh 402030 Lithium Polymer Li-Po Battery li ion Rechargeable Battery For Mp3 MP4 MP5 GPS” it was a very tight fit. I followed the steps here and it took me 15 to 30 minutes taking my time. The process was straight forward and I appreciate the information here to help. I did have to compress the width of the battery a little bit. The only think I would do differently is attempt to find find a slightly smaller (width) battery.

Link to battery I purchased:

http://amzn.to/2ETRZdo