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I'd recommend getting a solar powered charger. I go for multi-day hiking trips and I use one all the time. I ordered mine from aliexpress.com, waterproof, for less than $20. It's really inexpensive...
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I'd recommend getting a solar powered charger. I go for multi-day hiking trips and I use one all the time. I ordered mine from aliexpress.com, waterproof, for less than $20. It's really inexpensive...