The longest-lasting power bank I've tested has life-saving features (and it's $80 for Cyber Monday)
Briefly

The Anker 548 power bank, weighing over five pounds, boasts a massive 60,000mAh capacity, enabling it to charge devices multiple times, ideal for emergencies.
Despite its bulky nature, which makes portability a challenge, the Anker 548 integrates a pop-out LED light with three settings, enhancing its utility in power outages.
Read at ZDNET
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