Lithium Ions are the best and longest lasting. This thing has some solid weight to it. This is a replacement for one that was burned up. It's lightweight and recharges quickly. Same Bosch quality at a bargain price.
For hobbyists, this is all I need. I am very happy to be able to do this myself. This thing has some solid weight to it. I'm very satisfied with this outcome. It's very comprehensive and looks professional.
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