*About SUNNEAR: SUNNEAR focus on laptop batteries, To each of our customers with high quality laptop battery, the satisfaction from customer is our forever target. We have a professional Team,Focus our major and Value every client. Thanks for your purchase! *Specification: *Voltage: 11.1V. *Capacity: 44Wh/4000mAh. *Compatible Part Number: C31-X402 *Fit for:(Use "Ctrl" + "F" to find your models quickly) ASUS S300 Series ASUS S300C Series ASUS S300CA Series ASUS VivoBook S300 Series ASUS VivoBook S300C Series ASUS VivoBook S300CA Series ASUS X402 Series ASUS X402C Series ASUS X402CA Series ASUS S400 Series ASUS S400C Series ASUS S400CA Series ASUS S400E Series ASUS VivoBook S400 Series ASUS VivoBook S400C Series ASUS VivoBook S400CA Series ASUS VivoBook S400E Series *Package Included :1x C31-X402 battery. *Skills to use battery: For the new battery , we suggest that all of our customer should fully charge it with AC power adapter ,and this process takes a long period, the capacity might have been drained by inner PCB circuit, in order to protect your battery life,you should fully charge the battery to 100% and drain it to 1% 2 times, then the capacity will recover.Charge the battery regularly, at least once a month.
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