Battery type: Li-ion; Capacity: 60Wh/5200mAh; Cells: 6-cell; Voltage: 11.1V. The battery is durable and has overcurrent protection, anti-overcharge, anti-overdischarge and temperature control functions. Compatible Model:Dell Latitude E6520 E6530 E6540 E6420 E6430 E6440 E6330 E6320 E6230 E6220 E5520 E5530 E5420 E5430 / Precision M2800 / Dell inspiron 14R 15R 17R 17R-SE Series 15R-4520 15R-5520 15R-5525 15R-7520 15R-SE-4520 15R-SE-5520 15R-SE-7520 15R-SE 15R Turbo 17R-4720 17R-5720 17R-7720 17R-SE-4720 17R-SE-5720 17R-SE-7720 17R Turbo 14R-4420 14R-5420 14R-5425 14R-7420 Compatible P/N:N3X1D 71R31 P8TC7 P9TJ0 R48V3 PRRRF RU485 T54F3 T54FJ UJ499 YKF0M X57F1 04NW9 312-1163 312-1242 312-1310 312-1311 451-11947 8858X 8P3YX 911MD HCJWT KJ321 M5Y0X NHXVW 2P2MJ 312-1165 312-1323 312-1324 12-1325 451-11704 4YRJH CWVXW DHT0W M1Y7N PRV1Y 911MD Security & Reliability: Our batteries are assembled from top quality material and circuit boards to ensure fast charges and low power consumption