Specifications <br />Product name: Nitecore UGP3 Intelligent Charger<br />Input voltage: USB DC 5V<br />Output voltage: 4.2V &amp;plusmn;1% \/ 5V<br />Output current: AHDBT-302\/301\/201 500mA, USB 1500mA<br />Compatible with: AHDBT-302\/301\/201<br />Dimensions: 2.64&amp;rdquo;&amp;times;1.73&amp;rdquo;&amp;times;0.94&amp;rdquo; (67mm&amp;times; 44mm&amp;times;24mm)<br />Weight: 1.56oz (44.2 g)(without batteries)<br /><br />Features<br />&amp;bull; USB charger for HERO3\/3+ batteries<br />&amp;bull; High definition LCD displays real time charging status<br />&amp;bull; Features USB output charging<br />&amp;bull; Integrated intelligent power management system<br />&amp;bull; Intelligently detects input power<br />&amp;bull; Intelligently selects charging mode (CC, CV)<br />&amp;bull; Intelligently distributes charging power<br />&amp;bull; Priority Mode offers either battery or USB charging following users' preferences<br />&amp;bull; Automatically stops charging when batteries are fully charged<br />&amp;bull; Features over-charge prevention to protect batteries<br />&amp;bull; Enables data transfer via USB cable<br />&amp;bull; Rear hollow design for receiving the USB plug<br />&amp;bull; Constructed from fire retardant materials<br />&amp;bull; Designed for optimal heat dissipation<br />&amp;bull; Certified by RoHS, CE, FCC and CEC<br /><br />Package included:<br />1 x Nitecore UGP3 Intelligent Charger  (do not included any battery)<br /><br />User Manual