2 Pack of Replacement Olympus Stylus 850 SW Battery for Digital Camera - (1200mAh, 3.7V) Li-Ion Rechargeable Battery Replacement Olympus Stylus 850 SW Battery High capacity 1200mAh rechargeable 3.7V Li-Ion battery with premium cell Best replacement for the original EN-EL10 battery pack Quantity: 2 Pack 30-Day Money Back Guarantee. 1 Year Replacement Warranty