This article systematically introduces the impact of power tool battery type (Li‑ion, NiCd, NiMH), voltage (12V, 18V, 20V and above), compatibility and capacity on tool performance and battery life, and helps you make a wise choice based on your own needs through comparison. This article systematically introduces the impact of power tool battery type (Li‑ion, NiCd, NiMH), voltage (12V, 18V, 20V and above), compatibility and capacity on tool performance and battery life, and helps you make a wise choice based on your own needs through comparison. When cordless power tool brands switched to Li-ion battery technologies, they spec'ed and advertised batteries according to two fundamental characteristics – voltage and charge capacity, with units of volts and amp-hours, respectively. Voltage is a widely-understood concept, and amp-hours less so. Premium and subpar batteries differ in more than just price—they affect your work efficiency, safety, and long-term value. Your power tool's performance relies heavily on its. Nothing is more frustrating than investing in a new tool only to discover it won't work. Power tool batteries have come a long way from bulky nickel-cadmium (NiCd) packs. This guide dives into the world of power tool batteries, exploring different chemistries. Lithium-Ion is King: For most people, Lithium-Ion (Li-ion) batteries are the way to go. One System to Rule Them All: Sticking with a single brand's battery platform (like DeWalt's 20V MAX or Ryobi's. Batteries are the final commercial product that are delivered to customers and that require some data provided from the manufacturers to allow customers to evaluate the performance of different battery types in terms of capacity rating, allowable DOD, and temperature operating ranges.