Quote:
Originally Posted by Whitieiii
I want one that has 3-5 days battery life even when using it 4-6 hours a day on and off and waterproof up to 5ft of water if possible...
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I'm not aware of any e-ink device with that kind of battery life (30 hours). Most are closer to 16-20 hours tops.
Best bet in that situation is to get a power brick that can recharge the device a couple of times before needing to be recharged itself. I see them everywhere for under $20. Alternatively, if you are camping within reach of your car, just get a 12V USB adapter and use your car's battery to recharge.
-Jim