Fosmon 1200mAh Replacement Canon NB-10L Li-ion Battery Pack for PowerShot SX40 HS (2 Pack) Replacement Canon NB-10L battery pack for your PowerShot SX40 HS This is a high capacity battery with premium battery cell Rechargeable Lithium Ion with no memory-effect Battery Capacity: 1200 mah, Vol: 7.4V Includes: 2x Replacement NB-10L Battery Packs