Lithium-Ion (Li-Ion). 6460 mAh 51 Wh. 7.4 V. Brand compatibility: Dell. Black. Number of batteries included: 1 pc(s). Origin Storage BTI ALT TO DELL BATTERY E5450 E5520 E5550 4 CELL 51WHR. Features. Replacement for. 7FR5J. Compatible products. E5450 E5550. Brand compatibility. Dell. Product colour. Black. Battery voltage. 7.4 V. Number of battery cells. 4. Battery capacity. 6460 mAh. Battery technology. Lithium-Ion (Li-Ion). Packaging data. Quantity per pack. 1 pc(s). Number of batteries included. 1 pc(s). leaflet. Origin Eco. Origin Promo
