Tri-Panel Waterproof Solar Power Bank Sells for $25

A few years ago, I purchased a power bank with a solar panel, but it only came with a 1.5W panel, and I found it took around 10 to 20 days to charge the 8,000 / 10,000 mAh battery in sunny Thailand,…

from CNXSoft – Embedded Systems News www.cnx-software.com/2018/06/25/tri-panel-waterproof-solar-power-bank/
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