This is a smart battery, shaped like a regular battery, that can power other internet-of-things (IoT) gadgets. It constantly checks its own charge level and wirelessly sends that information to a special IoT charging device. Some versions of this smart battery can also receive power wirelessly from that charger to recharge itself.
Why it matters: Filed before low-power IoT radios and efficient inductive wireless charging became widespread. These technologies are now mature and cost-effective for small devices.
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