14.8V 3040Mah 45Wh HD04XL internal laptop battery for HP Envy Spectre XT 13-2120tu 13-2021tu 13-2000eg

With our own brand SMMA,We-Yamao run our aliexpress and ebay store online,

to sell all replacement laptop battery and laptop adapters.

Check below to see how our customers evaluate us........

Good quality comes from a strong 18650 Cell.

Double-Cell Smart Solution, Stable Circuit Architecture

Multiple instruction chip controls battery charge and discharge stability.

The master chip controls the operation status of each component.

The protection chip detects the voltage, current, and temperature conditions of each component.

Multiple resistors detect voltage and current conditions between each system.

The temperature sensing system monitors the cell temperature in real time.

The oxygen-free copper sheet at the power interface automatically disconnects

when the voltage exceeds the programmed value.

Best Use

Make every effort to stay with you, only to accompany you longer.

To determine whether the output performance of a notebook battery is stable enough, 

an adequate method is to observe whether the anti-wire is straight or not, 

and whether the output voltage is close enough to the target value.

Easy to deal with all kinds of situations.

About Yamao & SMMA >>>

Thank you for supporting HangZhou YaMao Information Technology Company. We are confident that together with our highly skilled production team,we will provide you with the highest standards of service. With our own brand of SMMA, Yamao is founded by Frank with his partners,who are good at e-commerce trade business management. We are a high-tech electronics company that engages in research, management and sales of innovative 3C product technology. We believe that high-quality, stylish products do not have to be expensive and SMMA is a prime example of this.

As one of the most professional laptop battery and adaptor supplier in China, Ya Mao was established in 2015, mainly produce and export of all types of replacement laptop batteries and AC adapters. To date, Hangzhou SMMA has developed more than 500 models and is constantly updating its products to meet customer requirements. All batteries are 100% compatible with famous brands including Sony, IBM, Lenovo, Dell, Asus, HP, Acer, Toshiba and many more. With innovative R&D, strict manufacturing management and quality control efficient sales, and patient, professional and courteous after sales service, our highly effective team will certainly satisfy your requirement for top quality products at a competitive price. We are dedicated to and passionate about technology and we continuously strive to achieve one goal: Great Gear for All.

For high quality products and world class service,we invite you to contact us to discuss how we can best help you.

Our Certificates >>>