<p><b>We have own professional manufacture factory in US,and we have more than ten years of experience in the production of lithium batteries. </b></p><p> </p><p><b>Our e-bike battery also have passed the SGS test and are widely used in electric bicycles. At the same time, there are professional maintenance points in these countries, and any product quality problems can be solved at the first time.</b></p><p> </p><p><b>The lithium-ion batteries are easy to install and remove due to their light weight and small size.It is recommended to be used with electric bicycle motors of 52v 250-1500W. </b></p><p><b><br></b></p><p><b>Package included: </b></p><p>1x Bike Battery</p><p>1x Charger</p><p>1x User Manual</p><p>1x a pair of Anderson connector.</p><p><br></p><p><b>Why choose QZF Electric Bike Battery ?  </b></p><p>【BMS Protection Board】High quality electric core and equipped with BMS protection board, prevent over charge, over discharge, over current and short circuit and ensure the long life expectancy.  The charge cycle exceeds 1000 times, life expectancy of our Ebike Battery up to 5 years. </p><p>The shell of this Waterproof and Solid plastic Case, can be mounted in most positions, it resists vibration, shock, and is small and lightweight.  </p><p>【Quality Factory】Directly shipped from our factory which produces Ebike battery for more than 10 years. Friendly reminder: Please purchase the battery which is suitable for your motor, if you don't know whether it fits for your bike, please contact our store.</p><p>【One-Year Warranty】If the product has any problem, please contact our store, we have after service in America and professional engineer to solve it (We have the customization service, if you have the special request, please contact us)</p>