Empty/Full Charge Indicator Battery Cap

You know how some electronics need 3 batteries but a charger only can do multiples of 2? And so, you charge 2 batteries and then you have this one empty battery that you have to figure out where to put so that you don't mix it up with the charged ones? Well, now you can add a simple little cap (~1g each cap) on to the empty batteries (AA or AAA) to make your life easier. Happy charging! Note, for simplicity, the print profile has a cap for AAA and AA batteries. Just copy the objects if you need more or delete the size you don't need!