Battery: 4 pack 6F22 9V 600mAh lithium-ion rechargeable battery</br>No memory effect??improved low self discharge makes it still maintain 75% of capacity after 3 year of non-use</br>Batteries can be recharged up to 1200 times?? high quality with professional care</br>Convenient operation without memory effect?can be charged anytime</br>Recommended for smoke alarms?? professional audio and medical devices</br></br>Product Description</br></br><b>About EBL??</b> <br> EBL?? is a certified brand manufacture that produce EBL?? series general use battery such as AA/AAA/9V/C/D18650 rechargeable battery??many kinds of battery charger for different types battery.All products and packages are marked with EBL?? which can only enjoy the rights by seller and manufacture '30 days money back and 1 year limited warranty '.The EBL?? series products have been certified by CE and ROHS??also can provide customized pro