Basde Rechargeable Batteries, 4X 18650 3.7V 9800mAh Li-ion Rechargeable Battery Smart Charger Indicator US

18 650 batteries are used to power all sorts of different things everything from power tool batteries laptop computers portable flashlights portable jumpstarters but the question is how good are the batteries inside those devices we testing several brands that claim they can provide three times the capacity as some more expensive batteries will be testing so let's get the testing underway and see which brand is really the best and the first test we'll find out if the affordable Chinese brands really do provide three to four times more capacity than the more expensive competition will also see how these batteries perform at colder temperatures we'll see how these batteries perform under a really high load in the final showdown event we'll see which battery can power up a fan the longest at two dollars and seventy five cents the least expensive batteries that we'll be testing is the ultra