Camera a cobalt mine fragile thing prone to all sorts of harmful influences. If you want it served for a long time, then pay attention to the mechanical structure. If the shell metal, then at least not crack if dropped. There are models designed to operate in extreme conditions. Traditionally Pentax pays great attention to protect their equipment from the adverse effects of the environment.
If you use a Lithium mines Ontario ion battery make sure it doesn't come in contact with other metals, as the ions might be disturbed leading to a defective battery. Jarring a battery by dropping your cell phone can cause damage even if the phone looks unharmed. Extreme weather conditions can also spoil batteries. Heaters, ovens, stoves and other hot items can cause a battery to overheat or melt. As with other electronic equipment, cell phones should never get wet. This directly affects the circuit and the battery and causes them to rust.
On the second point, iPOD batteries are smart charging. Now, you can't use your iPOD Nano battery to help study for a test! Rather, they're smart because they can tell the charger when they're almost full. When your iPOD is charging, it charges up to 80% capacity in no time flat. Then, the iPOD battery tells the charger to slow down, so the charging process goes from warp speed to snail's pace. This ensures that the battery doesn't overcharge, and makes certain that you're spending your time with your music, and not spending your cash on iPOD batteries.
Keep the Lithium battery stocks dry. High moisture levels damage connectors between it and the connector and that can lead to safety risks or unit failure. If possible avoid using it in damp places.
Agitate the water gently, until the light tells you it's done. UV purifiers don't work in murky water, so if that's the only water you have, you'll have to pre-filter it until it's not cloudy. You also need to make sure you don't drop a UV device.
A used battery must be disposed of properly. Do not crush or throw a battery into a fire. This could lead to a major accident because the battery could explode.