IBM ThinkPad X40 Series batteries are specifically designed for IBM laptop. We offers a complete line of ibm batteries and compatible replacements for most laptop models,Our replacement ibm thinkpad x40 series batteries are made with high quality parts and are guaranteed to meet or exceed the original equipment manufacturers specifications at a reduced price. All ibm thinkpad x40 series notebook batteries are tested for 100% quality control assurance. These batteries includes a one year warranty. You can count on our batteries!

IBM ThinkPad X40 Series Series batteries features:
•Only the highest quality cells are used in our IBM thinkpad x40 series laptop batteries .
•100% OEM Compatible Meet or exceed original IBM thinkpad x40 series specifications.
•100% Q.C. of Our IBM thinkpad x40 series Laptop battery and Chargers( Adapter ).
•1 year warranty.

Laptop battery compatible Part Number:
92P0999, 92P1000, 92P1003, 92P1005, 92P1009, 92P1080, 92P1119, FRU92P0998, FRU92P1002, FRU92P1078, FRU92P1143, FRU92P1145, FRU92P1147, FRU92P1149

Laptop battery fit models:
IBM Thinkpad X40 Series
Thinkpad X40 2371, Thinkpad X40 2372
Thinkpad X40 2382, Thinkpad X40 2386

IBM Thinkpad X41 Series
Thinkpad X41 1864, Thinkpad X41 1865, Thinkpad X41 2525
Thinkpad X41 2526, Thinkpad X41 2527, Thinkpad X41 2528

Specification:
Battery Type: Li-ion,  Voltage: 14.4V,  Capacity: 1900mAh / 4400mAh

•New THINKPAD X40 SERIES Battery come in a discharged condition and must be fully charged before use it. It is recommended that you fully charge and discharge your new IBM THINKPAD X40 SERIES Battery 3 times to allow it to reach its maximum rated capacity.
•Fully charging and then fully discharging the IBM THINKPAD X40 SERIES battery at least once every two to three weeks.With lithium-ion batteries packs, partial charges and discharges are best on a regular basis. These batteries do not suffer from the memory effect.
•Avoid piercing, hitting, crushing or any abuse use of the IBM THINKPAD X40 SERIES battery.
•The battery for IBM THINKPAD X40 SERIES should always be stored in a fully charged state and kept in a cool, dry and clean place.
•To maximize your IBM computer battery Performance,You had better circle the it at least once a month.
•Leaving a IBM laptop battery in a laptop while using an electrical outlet for long periods of time will keep the battery in a constant state of charging up and that will reduce the life cycle of the battery.
•Do not expose the IBM THINKPAD X40 SERIES battery pack to high heat or freezing temperatures. Do not leave your battery in your car in the summer. Hot batteries discharge very quickly, and cold ones can't create as much power.

Tips on Maximizing Your IBM THINKPAD X40 SERIES Laptop Battery Performance: