GERIT BATT 18V for Bosch Replace Battery 4.0Ah (18V) Battery type: Lithium-Ion / Voltage: 18-Volt / Capacity: 4000mAh Compatible with Bosch 2 607 336 091, 2 607 336 092, 2 607 336 170, 17618, BAT609, BAT618. Low-resistance cells offer 40 percent more runtime versus a standard 3.0Ah pack. Products are CE certified, tested by manufacturer to match OEM products. 30 days money back, 1 Year warranty and friendly customer service.