Different tools use different battery types. Common types are NiCad, NiMH, and Li-ion. NiMH batteries are better but still heavy. Always match the battery chemistry with the. When selecting batteries for those power tools that you depend on so much, the choice between premium brand options, aftermarket alternatives, and off-brand solutions can significantly impact your tool performance, safety, and long-term costs. The best battery for power tools depends on your. Doctor of Science from Hubei University, Postdoctoral Fellow in Materials Science and Engineering from Central South University. Long-term research in high-performance electrode materials, explosion-proof batteries, and low-temperature batteries, with a solid scientific research background and rich. Even when two batteries share the same voltage, which are actually identical in power — their connectors and locking tabs are intentionally different. That means a Makita 18V battery won't physically fit a Milwaukee 18V (M18) tool, even though they both run at the same voltage. Its impressive capacity means your tools just keep going, which is a lifesaver when you can't afford downtime on a job. For pure muscle, the Milwaukee M18 REDLITHIUM XC 5.