battery hp cq40

This . replacement battery is made with . battery cells , 100% compatible with your laptop. Our batteries are meet or exceed the original equipment manufacturer specifications (voltage, capacity, safety and compatibility), all of them have passed international certification( CE, UL, ROHS,etc.), strict quality and safety testing( QA & QC) before leaving the manufacturer. And the battery shell was made of . environmentally friendly and fire-resistant materials. These batteries also have internal circuit boards with smart chips, which allows the battery to communicate with the laptop to monitor battery temperature, performance and output voltage. We will check the functions of the replacement battery before shipping, ensure every function works well since we understand the annoyances of dealing with defective products and want you to be 100% satisfied with our replacement laptop battery.Before placing an order please to ensure the model(or part number) of battery can fit for your laptop, you can compare your old battery to our battery’s pictures, ensure them are the same. NOTE:- Battery must be fully charged with over 8-12 hours for the first time use,First 3 charge/discharge cycles are very important to get actual performance.