NinjaBatt Laptop Battery for Dell Inspiron 1525 1526 1545 1546 1440 1750 PP41L X284 GW240 K450N PP29L GP952 M911 M911G HP277 G555N RN873 312-0625 RU573 0G558N - High Performance [6 Cells/4400mAh/49wh] PREMIUM QUALITY REPLACEMENT NOTEBOOK BATTERY: Bring your laptop back to life with Ninjabatt's high quality laptop battery - Made of high quality materials, top grade battery cells and packed with safety features. TRUE CHARGING CAPACITY THAT LASTS: Every one of our replacement notebook batteries are tested to meet OEM specifications. Our 6 cells Li-ion battery is rated at 49wH/4400mAh/11.1V - true charge capacity that wont let you or your laptop down. SAFETY FIRST: Dont fall into buying cheap and unsafe batteries, our batteries are UL/CE-/FCC-/RoHS certified for safety and packed with a variety of safety features, including short circuit, overheat, and overload protections. HIGH QUALITY COMPONENTS & 12 MONTH WARRANTY: Our Laptop batteries are assembled from top quality material and circuit boards to ensure durability and performance. We only use grade A battery cells that provide up to 500 charging cycles. Were so confident in the performance of our replacement laptop batteries that were including a 12-month warranty with every single purchase. 12-MONTH WARRANTY AVAILABLE ON ALL LAPTOP BATTERIES: Were so confident in the performance of our replacement laptop batteries that were including a 12-month warranty with every single purchase. Reliable performance Extended battery life Safe use anytime, anywhere