This is really mini Emergency Phone Charger. It’s billed as “World’s Smallest Phone Charger”. It’s not to fully charge your phone, because it probably won’t be able to do that. But it can work to provide emergency power via 2 AA or AAA Batteries. It comes with a Micro-USB Interface, a Lightning and MicroUSB to C Adapter, so it can power most small rechargeable devices. It’s magnetic so it holds the batteries in place quite securely. In an emergency it’s likely you’ll have 2 AA or AAA batteries handy, or can find some easily. If you’re in a hotel and need emergency power for your phone, you could use the double AA batteries that are probably in the TV remote. Under $14.00
I bought mine here on Amazon: https://amzn.to/3uXvOts
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