Microsoft just introduced InstaLoad, a new battery technology that allows batteries to be placed in any direction without regard to positive or negative polarity. Meaning you can put a battery in however you want and it'll just work. It's genius.
InstaLoad uses a new, patented contact design that doesn't drain battery power or require expensive circuitry. Plus, it's compatible with off-the-shelf batteries used in flashlights, toys, battery chargers, and really anything that uses CR123, AA, AAA, C or D size batteries. We'll never have to look at + or - signs again.
[Gizmodo]
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