For the battery.. I use a hax saw around the sides of the top cover that is glued on... It so far is the cleanest way to get in the battery pack. Once inside I remove the Cyclon batteries.. I remove the gold tabs and try to keep as much of the metal as possible by pulling the gold pieces away from the solder joint.  I then solder two leads a black and red wire to the gold connectors.. First I scrape up the gold so I can get a good solder contact.. I then take the two gold pieces and glue gun them to the top cover where they are supposed to go.. I crimp battery connectors on the end of the wires and insert a small 6V alarm type system battery pack and connect the leads.. (one with the correct voltage and amps..) it fits in perfectly.. and use some foam tape to pad the battery in so it doesnt slide around. Then I replace the cover and use either clear tape or white tape and tape around the cover to hold it on.. It works perfect.. and easy to get back inside to replace the battery in the future..