This multi-function 4-port USB Li-po battery charger set can be applied for SY X25 SJ300-1/SJ300-2 HJ W609-9/HJ W609-10 H801-wifi/HT802-wifi RC quadcopter， which is a very convenient and economic choice. <br> <img alt="" src="http://www.guphotos.com/images/uploads/RM4923-001.jpg"> <br> <strong>Features:</strong> <br> Portable and easy to carry. <br> Safety for the using time of battery. <br> High quality and durable in performance. <br> 4-port charger can charge four batteries once time. <br> Over charge for protection for every charging port. <br> Suit with SY X25 SJ300-1/SJ300-2 HJ W609-9/HJ W609-10 H801-wifi/HT802-wifi RC quadcopter. <br> <br> <strong>Specifications:</strong> <br> Brand name: SJ R/C <br> Item type: Li-po battery and charger <br> Input: 5V <br> Output: 4.2V <br> Charging time: 60-90min <br> Battery: 3.7V 750mAh 25C <br> Suit with: SY X25 SJ300-1/SJ300-2 HJ W609-9/HJ W609-10 H801-wifi/HT802-wifi RC quadcopter <br> Battery size: 45 * 25 * 10mm / pcs <br> Battery weight: 20g / pcs <br> <br> <strong>Package information:</strong> <br> Package size: 10 * 6.5 * 4cm / 4.0 * 2.6 * 1.6in <br> Package weight: 148g / 5.3oz <br> Gift box package <br> <br> Caution:<br> Due to the difference of each PC output current and each battery initial voltage， please charge before used for the first time.<br> Don't over-charge， or over-discharge batteries.<br> Don't put it beside the high temperature condition.<br> Don't throw it into fire.<br> Don't throw it into water. <br> <br> <strong>Package list:</strong> <br> 1 * 4-Port Charger with USB Cable <br> 4 * 3.7V 750mAh Li-po Battery