How to use: Please don't place the battery in the circle directly， the battery should be placed towards the right part until the case light flashes， which means that it has been successfully installed. (Attention: If you don't see the light flashing， it hasn't been successfully installed. The anode should be put downward， and cathode upward)<br /><img src="http://img6.eachbuyer.com/x4/p89/iu53_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x4/p89/iu53_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x4/p89/iu53_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x4/p89/iu53_4.jpg" />