CAT 18V 4.0AH LI-ION BATTERY|DXB4

4Ah battery delivers up to double the run time of standard 2Ah batteries. Advanced Intelligence Technology optimizes tool and battery performance. Slide pack design is 100% compatible with all Cat 1 FOR ALL 18V cordless tools. Battery IQ is a set of adv electronics providing optimal performance through communication while protecting the battery from overcurrent, low voltage & ext temps.