This is a replacement battery holder for the portable Yamaha THR line of amplifiers, that is the THR5 and THR10. This holder was designed especially for my THR10C but should replace the 8xAA battery holder of any amplifier in the THR line.
This modification allows for portable use of your amplifier without any need to replace the batteries! Just charge it up again using the micro-USB port in the bottom. With a good battery this setup will last for over 5h of playing!
The reason for having a openly mounted battery is to allow for both external charging and easy swapping of old 18650 batteries.
Feel free to post you prints!
Print with good support for all the overhangs!
This holder is designed for a 18650 Li-ion battery (3.7V) and its holder, as seen in the picture above. This is both charged by and converted to 12V, for the amplifier, by a DC-DC Step-Up Module as seen in the picture above. (Make sure to set the voltage correctly!)
After all the components are mounted and connected, and some finishing touches are done. It should fit with the original screws without any modifications to the amplifier.
This is my original design and I also posted the source file (Rhino .3dm file), which will allow you modify the holder if needed.