Having a good laptop battery is one of the most important parts of owning a laptop， especially if you intend to take advantage of the laptop′s portability. Today， this Laptop Battery is recommended . Due to the high amount of power that this Laptop Battery are able to provide， it is typically quite useful and durable. It is extremely powerful while remaining cost effective， you can maximize your laptop′s convenient portability and recharge this top-quality Laptop Battery easily. Overall， getting the power that you need from a battery is important， and this Laptop Battery provides amazing results for your laptop!                                    Features            You can get long hours of battery life without having to frequently plug into recharge with the Notebook BatteryNo memory effect. Chargeable even if it has not been used up yetUsing advanced cell technology and quality parts， the Notebook Laptop Battery guarantees the stamina you need for long work sessions and travelManufactured to the highest quality available， Notebook Laptop Battery with true enhanced performanceNotebook Laptop Battery is powered by high quality cellsThe Replacement Laptop Battery recharges while it is installed and the computer is connected to AC power                                                            Specifications            Battery Type    Replacement Battery    <br>Cell Type    Li-ion    <br>Battery Cells    6-cells    <br>Voltage    10.8 V    <br>Capacity    5200MAH    <br>Colour    Black    <br>Dimensions    8.01 x 2.36 x 0.79" / 20.5 x 6 x 2 cm (L x W x H)    <br>Weight    12.63 oz / 358 g    <br>Manufacturer Warranty    3 years     <br>                                                            Package Includes            1 x Laptop Battery                                                            Extra Info            IBM part number:<br>LENOVO: 40Y6797， 40Y6799， 40Y6795， 40Y6799， 40Y6798， 42T4511， 42T4513， 42T4504， 42T5233， 41U3196， 41U3198， 41N5666<br>ASM: 92P1128， 92P1130， 92P1132， 92P1138， 92P1140， 92P1142<br>FRU: 92P1127， 92P1129， 92P1131， 92P1133，92P1134， 92P1137，92P1139，92P1141Compatible Models:<br>ThinkPad T61 Series<br>NOT compatible with T61 with 14.1" widescreen.