The Midland ER310 Emergency Crank Weather Radio has a lot of ways to stay powered up. It can be charged using a hand crank, a solar panel, a USB port, and it has a 2600 mAh rechargeable battery. All this makes it pretty handy if you're dealing with a power outage or an emergency situation.
From what we've found, while it generally holds up well, some folks have pointed out that the battery life isn't always great if you're just using the solar or hand crank options.
The manufacturer suggests using the USB port for the most reliable charge and keeping the other methods as backups.
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How we researched this
Where this comes from: this answer draws on the product's published specifications and the reviews ShopSavvy collected for it, alongside prices from 1 retailer in ShopSavvy's price data, most recently seen May 26, 2025.
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