XITAIAN 11.1V 44Wh 3900mAh 42T4846 42T4847 81+ Replacement Laptop Battery for Lenovo ThinkPad T420s T420si Series 0A36287 42T4844 42T4845 1143 1039 1036 1037

• SPECIFICATION: Battery Type: Li-ion; Voltage: 11.1V; Capacity: 44Wh/3900mAh.
• COMPATIBLE PART NUMBER: 0A36287 42T4844 42T4845 42T4846 42T4847 1143 1039 1036 1037 81+.
• COMPATIBLE MODEL: For LENOVO ThinkPad T420s T420si series.
• SAFE AND STABLE: Overcharge protection, overcurrent protection, short circuit protection, high temperature protection to ensure your safe use. GRADE A CELLS: No memory effect, fast charging and low power consumption. Strict guidelines for compatibility and compliance with environmental safety standards.
• HIGH QUALITY COMPONENTS: Our Laptop batteries are assembled from top quality material and circuit boards to ensure durability and performance. We only use grade A battery cells that provide up to 500 charging cycles. We’re so confident in the performance of our replacement laptop batteries.

XITAIAN is a professional manufacturer in the field of power tool batteries, laptop batteries and charger. We are committed to providing high quality battery, competitive cost, superior performance and better service to customers. Specifications: Battery type: Li-ion; Voltage: 11.1 V. Large capacity: 44Wh/3900mAh. Compatible Part Numbers: 0A36287 42T4844 42T4845 42T4846 42T4847 1143 1039 1036 1037 81+. Compatible models: For Lenovo ThinkPad T420s T420si series Note: The new lithium-ion battery must be fully charged and fully discharged 2-3 times before being fully conditioned. Remember that the perPourmances and longevity of the new lithium-ion battery can only be achieved after two to three full cycles of charging and discharging. After 2 or 3 cycles, you will never have to adjust the battery again! . If for any reason you are not completely satisfied, please contact us.