Power Bank Showdown: Ugreen vs Anker 165 watt vs DIY lithium iron phosphate (1 amp and 3 amps)
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We test of 2 popular Amazon power banks (Ugreen and Anker 165 watt) versus a DIY lithium iron phosphate rig. I measured real runtime at 1 amp and 3 amps, recharge time from empty, delivered watt hour, and thermals. The DIY build ran >2× longer at 1 amp and >2× at 3 amps and won on price per watt hour—perfect groundwork for an all‑day mobile workstation powered off‑grid.
