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4 . Use the right product for the job. There are certain applications for which the was designed.

Emergency – – Power Outage – Lite Saver – When there is natural disaster like earthquakes, tsunamis, tornados, or just a regular power outage.

Some into the wall, some have cell phone chargers and use USB, and some have special charging stations. Most modern use LED ( Emitting Diode) technology instead of older types of bulbs.

Mosquito Swawith Special Charging . Mosquito Swatter.

https://en.wikipedia.org/wiki/Rechargeable_battery

https://en.wikipedia.org/wiki/Rechargeable_alkaline_battery

Amazon.com: 220v rechargeable flashlight

rechargeable flashlight 220v | eBay

Rechargeable Flashlight 220v, Rechargeable … – Alibaba