?Precise Business Compatibility? Replacement for ThinkPad G580 Y580 G480 G485 G585 Y480 Y480N, perfect match for Part No.: 45N1051 45N1052 45N1054 45N1055, 100% no system alarms. ?Long Battery Life Upgrade? 6-cell high-capacity battery, support 8-10 hours of office work (60% more power than 4-cell battery) ?Military Grade Protection? Passed MIL-STD-810G shock/drop test, metal contacts are 300% more durable than ordinary batteries. ?ThinkPad Exclusive Function? Retain original power management chip, compatible with all Lenovo Vantage settings (including charging threshold). ?GBLGBD Support? 12-month warranty + volume purchase discount, GBLGBD provides 24/7 technical assistance for any product inquiries or troubleshooting needs throughout the entire lifespan of your battery. ? Professional ThinkPad Battery Solution Engineered with A+ grade 18650 cells to meet Lenovo's strict power standards. ? Compatibility Guarantee: Compatible with Laptop Models: For B Series: For B480 B485 B480A B580 B585 B590 For IdeaPad G480 Series: For IdeaPad G480 2184-22U G480 2688-2LU G480 2184-3NU G480 2184-27U G480 2688-2NU G480 2688-2AU G480 2814 G480 2184-3PU G485 G480A For IdeaPad G580 Series: For IdeaPad G580 2819 G580 2189-8CU G580 2189-8AU G580 2189-88U G580 2189-82U G580 2689-38U G580 2689-3DU G585 G580A G580AM G585 G780 For IdeaPad Y480 Series: For IdeaPad Y480A-ISE Y480M-IFI Y480N Y480P Y485 Y485N Y485P For IdeaPad Y580 Series: For IdeaPad Y580A Y580M Y580N Y580P For IdeaPad V480 Series: For IdeaPad V480C V480S V480U For IdeaPad V580 Series: For IdeaPad V580C For IdeaPad Z380 Z380A Z380AM Z480 Z580 Z585 Z485 For ThinkPad E Series: E430 E430c E431 E435 E440 E445 E530 E530C E531 E535 E540 E545 Replacement for Battery Original Part Numbers: 45N1048 45N1049 45N1043 45N1042 45N1051 45N1052 45N1054 45N1055 121500047 121500049 121500052 L116Y01 L11S6F01 L11S6Y01 L11O6Y01 L11L6F01 L11P6R01 L11L6R01 L11N6R01 L11L6Y01 L11M6Y01 L11N6Y01 OA36311 ? Technical Specifications: Capacity: 56Wh / 10.8V (6-cell) Battery Type: High-density Li-ion, 5200mAh Pro Business Tips: Enable ?Battery Conservation Mode? to extend life by 200%. Monthly deep discharge up to 5% to maintain metering accuracy. ? Package Includes: 1 E430 75+ Replacement Battery 1 User Manual