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Magnetic connectors for batteries
Ingenious! Elegant in its simplicity. I got lucky and found some Teflon tubing of the correct diameter. Slips right off. Silicone tubing would probably also work. If you need higher voltage, just use a single loose magnet to stick two or more batteries together.
Beach Buddy: 3-in-1 Solar Phone Charger, Boombox, and Sunburn Timer Calculator
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