Do you know how to pick up a high quality Li-ion battery? If you can spend a little time to know about our rechargeable Li-ion battery, you will have a big surprise.This trustfire battery can stay powered up for a long time because it is made of high quality material. The length of it is 50mm and the diameter of it is 18mm. The voltage of the Li-ion battery is 3.7V. It is a super 1800mAh rechargeable li-ion battery. Brand new and high quality trustfire battery. This protected Li-ion battery has high security, pollution-free, no memory effects; Of course, the Li-ion battery doesn't include harmful elements, so you can safely use. This Li-ion battery is great for flashlights, toys, remote controls etc. It is very convenient to have spare rechargeable batteries on hand. With such rechargeable Li-ion battery, you always have fresh batteries for your electronics. What's more, compared with other the same products, it has such a competitive price. You will get more than you paid! What are you waiting for? Hurry up! It's time to make a sensible choice! Take this trustfire battery home.