Sammy Kamkar said malware was found in e cigarette batteries. I wouldn't trust aftermarket batteries or a single device with legit batteries, not fkr serious money anyway. 
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This is a Specter DIY wallet powered with a data free cable and Cold Power bought from coinkite.
I bought a magnetic adapter to connect the cord. It runs on a 9v battery.
I've used it with Cold Cards, Seed Signers, and Specter DIY. I doubt it would work on the foundation though. It looks like a cell phone.
