The design engineers of Gushine have developed customized battery packs for data acquisition handheld devices. Many of the bar code readers, portable computers, POS devices and portable printers used widely in the world are equipped with batteries produced by Gushine. With years of rich experience, we have established a good reputation. Our battery packs are safe and reliable and they are designed to meet the requirements of most stringent certifications. Here, we design and test various battery packs according to the most stringent industry standards and obtain certifications.