Last spring, Hitachi introduced its 18-V DH18DL SDS rotary hammer, which is compatible with Li-ion, NiCad, and NiMH batteries. The tool features a two-step speed switch, with Power Mode for faster drilling in larger diameters (5/8 in. maximum in concrete) and Save Mode to conserve battery power and prevent bending of small-diameter bits. In Power Mode, its maximum no-load speed is 1500 rpm and impact speed is 6200 bpm. When used with Li-ion batteries, the DH18DL can drill up to 105 holes on a single charge. Hitachi's industrial tool product manager Joe Fedor says the company plans to introduce a 25-V model in the next several months.

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