1)Type: Li-ion 2)Voltage: 10.8V; Capacity: 4.4AH 3)Replace for laptop battery model: 02K6793, 02K6794, 02K6795, 02K6796, 02K6798, 02K6878, 02K6879, 02K6897, 02K6898, 02K6899, 02K67020, 02K7020, 02K7021, 02K7022 4)For original laptop models: IBM ThinkPad A30 Series- ThinkPad A30, ThinkPad A30P IBM ThinkPad A31 Series- ThinkPad A31, ThinkPad A31P 5)Dimension: 216.20 x 61.90 x 25.00 mm 6)Color: Black 7)Longest performance with no memory effect 8)Both OEM and ODM are welcome 9)Guarantee: 6-12months producing area:China payment:T/T supplying capacity:5000pcs/day