PJ7 Li-ion Battery: Rechargeable, 1750mAh, 10.8VDC, 19Wh, easy replacement. Provides power to print up to 600 pages on a single charge. Application/Usage: Printer Battery Chemistry: Lithium Ion (Li-Ion) Application/Usage: Printer Battery Chemistry: Lithium Ion (Li-Ion) Product Type: Battery Product Type: Battery Compatibility: Brother PocketJet 7 Printer Manufacturer Part Number: PA-BT-002 Manufacturer: Brother Industries, Ltd Product Name: Printer Battery Brand Name: Brother Brand Name: Brother Battery Size: Proprietary Battery Size Battery Rechargeable: Yes Battery Size: Proprietary Battery Size Battery Rechargeable: Yes