What are the best batteries for mods? And what is the right battery to use in your mod? It's actually the most important questions someone can ask before vaping on a new device. All personal vaporizers utilize high discharge lithium batteries. These batteries are by far the most crucial part of your device. When handled properly they are quite safe but if mishandled can be dangerous (especially in a mechanical mod). From our selection you will find everything you need to select the best battery for High Drain mods.