<b>Specifications: </b><br> Battery Type: lithium-ion 57++ Voltage: 11.1V <br> Capacity: 8960mAh/9-Cell <br> Certificate: CE,RoHS,FCC <br> Condition: 100% New from Manufacturer, Grade A Cell, 12 Months Replacement <br><br><b> Replace Part Number:</b> <br> 45N1144 45N1145 45N1152 45N1153 45N1150 45N1151 0C52864 0C52863 <br><br><b> Compatible Laptop/Notebook Models: </b><br> Lenovo ThinkPad T440P T540P W540 W541 L440 L540 <br><br><b> NOTE: </b> <br> Please make sure if this battery suit for your laptop or not before place an order./""Ctrl/"" + /""F/"" to find your models <br>If you can not make sure that ,please contact with us freely. <br><br><b> ZTHY laptop battery instruction : </b> <br>1. The new ZTHY battery need to charge and discharge 3-4 cycles before, takes about 7-8 hours in order to activate lithium ion fully to maximun space. <br>2. Please don’t discharge to the computer power off, otherwise it may be damaged easily and may not be charged fully. <br>3. If you connect external power to use for a long time, please remove the battery. <br>4. If you do not use battery for a long time, make sure to charge more than 80% electricity every month.