About this replacement
Designed for Brother, Pentax devices. Compatible models include PJ-520, PJ-522, PJ-523, PJ-560, PJ-562, PJ-563, PocketBook300, PocketBook, PocketBook+, PJ-622, PJ-623, PJ-662. Replacement part numbers include PA-BT-300, PA-BT-500, LB4707001, PJ-4844A, SB-BT500-N, PT-1501A, 205526. Key specifications: 14.4V, 360mAh, Ni-MH.