My parents would use some batteries for light in my childhood. I saw them drop the batteries when they use off them. Now as China rechargeable battery supplier, I know we could use Li-Ion batteries which are rechargeable and we don’t need to drop it once we use them.
 
Li-Ion (Lithium-Ion) batteries are a type of rechargeable battery. Lithium ion batteries are one of the most common rechargeable batteries in portable electronics. Lithium ion batteries buying from Li-ion rechargeable battery wholesale have one of the best energy densities, no memory effect, and a slow loss of charge when not in use, in comparison with other chemistries of rechargeable batteries. Lithium ion batteries are also environmentally safe because there is no free lithium metal. They come in a variety of sizes such as AA, AAA, RCR123A, 18650, 9V, 2032 button cells, and more.
 
Now we all want to buy hot sale battery charger for our daily life use. I think this is good for our life.