One of its core features is that it is a portable solar charger with 3 highly efficient solar panels which could recharge itself expeditiously.
Review of 30000mah solar panel power bank.
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With a full battery this solar bank can charge an average device 12 times the high points.
The best solar charging ability.
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The best solar charging ability of similar devices approximately 25 30 hours high battery capacity which allows for many charges.
That means charging it with a sun light can take a long time.