While there's no good way to get around these issues we can buy different types of batteries which get around these issues all of which use the original gameboy battery compartment
- AA batteries - These are obviously what the case is made for but the charging solutions are poor in comparison to lithium batteries.
- 14900 cells - Same size as AA batteries but you will want to run these in parallel like this guy https://www.youtube.com/watch?v=JgPfakKX_EU
- My favorite is a softback in a case for better durability. I've ordered these unofficial 4800mah galaxy s2 batteries and an external battery pack copying jostie94. http://www.sudomod.com/forum/viewtopic.php?f=9&t=3197