No memory effect, can be recharged when fully or partially discharged. 9V batteries are perfect for smoke alarms, metal detector, professional audio, toys, guitar, medical devices and more.<br>  <br> <strong>Features:</strong><br> Provides very long use time per charge with high capacity. <br> Designed for enhanced performance for high drain applications.<br> No memory effect, can be recharged when fully or partially discharged.<br> 9V batteries are perfect for metal detector, professional audio, toys, guitar, medical devices and more.<br> Safety and environmental protection material, protect you and your family.<br>  <br> <strong>Specification:</strong><br> Material: Lithium<br> Battery capacity: 280mAh / 350mAh / 550mAh / 650mAh(Optional)<br> Voltage: 9V<br> Charge time: 2hours<br> Service Life: 500 times<br> Size: 45 * 25 * 18mm / 1.7 *  0.9 * 0.6in<br> Weight: 50.3g / 1.7oz<br> Package Size: 7.5 * 5.3 * 3cm / 2.9 * 2.0 * 1.1in<br> Package Weight: 68g / 2.3oz<br>  <br> <strong>Package List:</strong><br> 1 * Lithium Batteries<br> 1 * Storage Box