40WH MR90Y XCMRD Laptop Battery for Dell Inspiron 15-3521 15-3531 15-3537 15-3542 15-3543 15r-5521 15r-5537 14-3421 14r-5421 14r-3437 17-3721 17-3737 17r-5737 17R-N5721 Latitude 3440 3540

About LNOCCIY LNOCCIY Inc offers the highest quality and most reasonable price products, We are focusing on the quality of products and excellent customer service. 24 x 7 Email Support and 12 Months Warranty. Ctrl + F search the model you need. Thanks for your purchase! Compatible Part Numbers: 0MF69 24DRM 49VTP 4DMNG 4WY7C 6HY59 68DTP 6KP1N 6XH00 6K73M 8RT13 8TT5W 9K1VP DJ9W6 FW1MN G35K4 G019Y N121Y MR90Y MK1R0 T1G4M VR7HM PVJ7J V1YJ7 V8VNT YGMTN X29KD XCMRD XRDW2 W6XNM 312-1390 312-1387 312-1433 312-1392 Compatible Models: Dell Inspiron 14 Series 14-3421 14-3437 14-5421 14R-3421 14-N3421 14-N5421 Dell Inspiron 15 Series 15-3521 15-3537 15-3542 15-3543 15R-5521 15R-5537 15R-N3521 15R-N5521 15R-N5537 Dell Inspiron 17 Series 17-3721 17-3737 17R-5727 17R-5737 17R-N3721 17R-N3737 17R-N5721 17R-N5737 Dell Latitude E3440 E3540 Series Dell Vostro 2421 2521 Series Maintenance of Laptop Battery (1) If you don't use the battery for a long time(3 months or more), you should charged the battery to a minimum level of 50%. Otherwise it may not be able to charge again after long time storage. (2) Never take out the battery from the laptop while it's charging or discharging (3) When discharging the battery,do not discharge to 3% or lower.It is strictly prohibited to discharge the battery until the laptop lost power or 0% (4) If your laptop cannot charge or fully charge your NEW battery, there may be possibilities that the adapter does not compatible with the laptop or there's some damage with the adapter, please switch off your laptop and try again or change to a correct adapter to charge.