Rechargeable Lithium-Ion Battery For Canon VIXIA HF M41 - (Guaranteed To Work Exactly Like The Original Canon & Last Longer!) Guaranteed To Work Exactly Like The Original Canon Brand & Give You Longer Recording Time! Chemistry: Lithium Ion- Definition: Does not retain harmful memory which allows you to recharge anytime without affecting it's overrall performance and life. 3000 Mah Includes 1 Year Warranty