GPK Systems Battery for Hitachi Ck 12d, Ck 12dy, Cl 10d, Dn 10dy, Fch 30d2, Fds 9dva, Fds 9dvc, Ut 6d, Vh 8dya, D 10d, D 10dd, D 10df, D 10df2, D 10dg, D 10dh, D 10dj, D 10k-2 Cordless Tool Battery 9.6 Volt Ni-mh 2.1ah Rechargeable Voltage: 9.6V Capacity: 2100mAh Type: NI-MH Service & Support 1 year warranty Batteries are made with the highest quality materials