Why is the NightStar batteryless flashlight housing made from non-metallic material?
For obvious reasons. Any metallic housing will interfere in the way the charging magnet moves through the coil in a batteryless flashlight. Magnetic fields generated in a metallic housing will oppose the magnetic field of the charging magnet thus preventing it from passing through the coil with sufficient speed to charge the energy-storage capacitor. Another reason is the cost factor. Metals are more expensive. Both plastic and acrylic are more durable besides being corrosion-resistant and chemical-resistant. Please use water to clean your NightStar batteryless flashlight.
