Hitachi BCL1015 10.8V - 12V HXP Lithium Ion Battery 2 Pack C345317P Retail Packaged Batteries: 10.8 - 12 volt (Max) Lithium-ion Hitachi battery Original Hitachi Lithium-Ion batteries hold their charge better than off-brand batteries For use with tools such as: DS10DFL, WH10DFL, UB10DL, DS10DL (Sold Separately) Full Hitachi Warranty Provided by Authorized Hitachi Distributors