18V 3500mah Battery for Hitachi EB1814SL EB1820 EB1820L EB1812S DS18DFL C18DL US | eBay
Hitachi DGL 18-volt 1/2-in Cordless Drill (2 Li-ion Batteries Included and Charger Included) at Lowes.com
Hitachi 3 Amp-Hour; Lithium Power Tool Battery at Lowes.com
Amazon.com: LabTEC 2 Packs BSL1830 18V 5000mAh Lithium Battery Replacement for Hitachi 18V BSL1815X BSL1815S BSL1830 BSL1830C, fits 339782 330139 330557 Cordless Power Tool : Tools & Home Improvement
Amazon.com: for Makita 18V Battery Adapter Convert to for Hitachi 18V Lithium Cordless Tool and for Metabo18V (Not 36V) Slide Style Tools : Tools & Home Improvement
6.0AH 18V Li-ion Battery For Hitachi BSL1830 BSL1815 BSL 1815X 330067 or Charger | eBay