This Swiss Army knife of rugged phones has the largest battery I've seen on a mobile device (and the built-in projector is cool too)
The Oukitel WP100 Titan is a rugged smartphone with built-in projector, camping light, and a huge capacity battery.
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ALLWEI Portable Power Station PPS2400 Pro & Tenerife Volcanic Activity – Energy Independence in Times of Crisis
ALLWEI's PPS2400 Pro Balcony Power Station provides reliable backup power amid Mount Teide’s seismic activity, ensuring ...