[Battery High Quality] - Our batteries are made to the exact specifications as same as the original battery. Every battery is with strict spec detection and use testing, absolutely ensure the safe and durable use of the battery Overcharge, over discharge, Replacement, over voltage and short circuit protection for better battery life. The package has shock-shock foam, transport a protection battery. [Battery Compatible] Fit Model:Midea M4 Vacuum. All batteries are Certificated with ISO9001, RoHS, and CE. [Vacuum Battery Specifications]-Capacity 2600mAh / 37.44Wh,Voltage:14.4,Dimensions:69.40 x 37.30 x 37.30mm,Weight:190.0g, - New fully decoded chip works just like the original [New Vacuum battery ]There are many installation videos available on the Internet, which are very easy to install [Cameron Sino battery] Email reply within 24 hours-12-month Warranty and 30-day Money Back Guarantee