Product Features Super Long lasting: EBL 9 volt li-ion batteries adopt advanced energy gathering ringwith high capacity of 1200mah, which keep longer lasting for smoke alarm detector. Improved low self-discharge( (LSD): HiQuick 9 volt li-ion batteries have low self-discharge( (LSD), you don't worry about battery damage or undurable due to self-discharge. Reliable battery: HiQuick 9 volt li-ion batteries with overcharge, over-discharge, over-current and short circuit protection. It can provide more reliable power for your device. Without memory effect: HiQuick 9 volt li-ion batteries are no memory effect, which are more durable than ordinary batteries. It can be recharged many times (depending on the device used, the battery life is different) and it’s a great idea to replacement for the normal battery. By reusing batteries, you are reducing your carbon footprint and the waste caused by disposable one. Widely Application: HiQuick 9 volt li-ion batteries could work well with a variety of devices, such as wireless microphone, smoke/fire alarms, remote controller detector, speaker, LED lighting devices, walkie-talkie, multimeter and so on. Product Specification * Capacity: 1200mAh * Battery Type: Li-ion * Voltage: 9V * Net Weight: 60g per piece Package : as your choice