I would like to share this suggestion with others who have made or plan to make an amp like the Oliva Amp I made a few posts ago. After using it for a while I realized that changing out the battery was not very convenient. It got me to thinking how I could make an external battery pack. Then while looking through some parts catalogs it hit me to just install an external battery compartment like the one pictured below.
It only requires one more hole to be cut in the side of the amp and that’s it. It looks great and means you will not have to take apart the amp to change batteries ever again. Here is a picture of how clean it looks. (Bottom left side of picture below the cable input.)
They can be purchased at most electronic component suppliers and really add that extra level of convenience and professional look. Hope this helps and keep banging out the projects everyone.