BSL1815X 18-Volt 1.5-Amp Hour Lithium Ion Battery (330139)
Amazon.com: [1Pack] 18V 5.0Ah High Power Battery for Hitachi Power Tools Fit BCL1815 BCL1820 BCL1825 BCL1830 BCL1840 EBM1830 327730 327731 18-Volt Battery : Tools & Home Improvement
Hitachi NT1865DM 18V Cordless Straight Finish Nailer, Brushless Motor, 16 Gauge, 1" to 2-1/2" Nails, Compact 3.0 Ah Lithium Ion Battery, Zero Ramp-Up Time, Lifetime Tool Warranty - - Amazon.com