The 510 Battery Charger from Cloud is a compact and convenient charging solution for your vape pen batteries. It features a USB port that can be connected to any standard wall adapter, computer or car charger. The charger has an LED light indicator which turns red when the battery is being charged and green once it's fully charged. This device works with all types of 510 threaded batteries including those used in CBD oil vaporizers, THC cartridges as well as nicotine e-cigarettes. Its lightweight design makes it easy to carry around so you can charge on-the-go without worrying about running out of power. Overall, if you're looking for an affordable yet reliable way to keep your vape pens powered up at all times then the 510 Battery Charger from Cloud should definitely be on top of your list!