Compatible with Toshiba Tecra 8000 Series. Best replacement for the original battery (Part Numbers: PA2451URN , PA2510UR , PA3010U-1BAR). Brand new generic third party battery. Rechargeable Lithium-Ion battery. No memory effect. (Does not need to be fully discharged before recharging) Capacity : 4400mAh, 10.8V. Dimensions : 158.70 x 91.30 x 19.30 mm Net weight : 423.8 g