Battery f. Dell E6420 Audi A4 A5 S5 E6420 Inspiron 4420 4520 from PATONA 6600 mAh / 73Wh 11.1 Volt First-class branded cells of quality class A 100% compatible with the original E6420 Without memory effect High level of safety thanks to integrated heat and overcharge protection The battery is suitable for the following laptop models:DellInspiron 4420, 4520, 4720, 5420, 5425, 5520, 5525, 5720, 7420, 7520, 7720, 14R, 14R Turbo, 14R-4420, 14R-5420, 14R-5425, 14R-7420, 14R-SE, 14R-SE-4420, 14R-SE-5420, 14R-SE-7420, 15R, 15R Turbo, 15R-4520, 15R-5520, 15R-5525, 15R-7520, 15R-SE, 15R-SE-4520, 15R-SE-5520, 15R-SE-7520, 17R, 17R Turbo, 17R-4720, 17R-5720, 17R-7720, 17R-SE, 17R-SE-4720, 17R-SE-5720, 17R-SE-7720, M421R, M521R, N4420, N4520, N4720, N5420, N5520, N5720, N7420, N7520Latitude E5420, E5420 ATG, E5420 N-Series, E5420M, E5430, E5520, E5520 BRC 6, E5520 N-Series, E5520M, E5530, E6420, E6420 ATG, E6420 N-Series, E6420 XFR, E6430, E6430 ATG, E6440, E6520, E6530Vostro 3460, 3560Designation of the compatible original batteries:Dell M5Y0X, NHXVW, T54FJAdditional information: The battery is equipped with grade A branded cells, which have an extremely high density. This contributes to very long battery runtimes.The highest level of safety is guaranteed by permanent quality controls in the production facilities on site by our PATONA team members.The original charger can be used to charge the battery.The battery is a high-quality replica product of the PATONA brand - not an original.