81+ Battery for Lenovo ThinkPad T420S T420Si T430s T430si 45N1036 45N1037 45N1064 45N1065 Emaks&reg; Compatibity:Lenovo ThinkPad T420S T420Si T430s T430si Specifications:Cells: 6-cell,Capacity: 5200mAh; Voltage: 11.1V. Condition:Emaks products are CE / FCC / RoHS certified, tested by the manufacturer to match and / or exceed the OEM specifications Superior quality: strict guidelines for compatibility,3 grade A cells, high capacity and low power consumption, built-in circuit protection, avoid over-voltage, over-current and over-temperature, meet with environmental and safety requirement Warranty & service:Reliable and friendly customer service ready to respond within a 24 hour time frame. 30-Day Money Back Guarantee, 6 Month Replacement Warranty and Lifetime Support Guarantee