• 1 day

      Those double the voltage, the others double the current (series vs parallel)

      • probably less for current reasons and more for capacity reasons. pretty confident that a single battery can provide enough current

  • This actually works. I used a paperclip instead of second battery.

  • 2 days

    Some of them clock that has two battery slot actually only need one to function, the other battery are for lamp and alarm. Pretty neat when i found that out.

  • I’ve got a (very old) Logitech G602, and you don’t even need to cross the battery in that. It will work with a battery in either slot or both. Always thought that was nice because before rechargables where it doesn’t matter, usually if you used each battery separately after they stopped working together, you’d get a bit more use from them.

    • I still got one of those. The mouse wheel is starting to get a little loosey-goosey on me though; it’s annoying but not worth getting rid of yet.