Hitachi BCL1015S 12V HXP Lithium Ion Battery 2 Pack (Replaces BCL1015 #331065) 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, WH10DFL2 , UB10DL, DS10DL (sold separately) Full Hitachi Warranty Provided by Authorized Hitachi Distributors Quantity  (2) BCL1015S Battery (Replaces BCL1015 #331065)