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| 3 |  DIY Two-Stage "5 Gallon Bucket Air Cooler!" w/radiator and variable speed fan! strongest cooling! AC | | 10.7K | Estados Unidos | 90 |
| 2 |  DIY 12V Air Cooler! very cold air! 20w (AC or DC) - Radiator w/Stand + Hi-Speed.Fan! modular design! | | 10.1K | Estados Unidos | 90 |
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| 17 |  Make a Sand Battery Air Heater at home! no-electricity needed! strong air heater! - w/fan! 300F/150C | | 1.3K | Estados Unidos | 88 |
| 16 |  DIY Space Cooler! "Peltier" AC Air Cooler - 100w/200w 12v (12715 peltier module) - no ice needed! | | 1.2K | Estados Unidos | 88 |
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| 18 |  EnjoyBot 12v 200amh LiFePO4 battery testing | WhyNoWork84 @whynowork8480 | 305 | — | 88 |
| 5 |  Homemade Salt Batteries running thermo-electric fans! Easy DIY! strong breeze! salt & sand batteries | | 1 | Estados Unidos | 89 |
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| 13 |  Big Upgrade to our DIY Lithium SBMS & LiFePo4 Battery Bank - Part 1 | | 1 | Estados Unidos | 88 |