Dell XPS 14 L401X XPS 15 L501X L502X XPS 17 L701X L702X Battery - 9 Cell
9 Cell Battery for Dell XPS 14 (L401X) , XPS15 (L501X, L502X) and XPS17 (L701X, L702X) Revive your laptop with an extended run Dell XPS 14, XPS 15, XPS 17 battery. This battery is brand new and compatible with the Dell XPS 14 (L401X) , XPS 15 (L501X, L502X) , XPS 17 (L701X, L702X) . Additional compatible laptop models and battery part numbers are listed below. This 9 cell lithium-ion battery has twice the run time of the original battery and can stay unplugged for up to 7 hours. Because of the additional capacity, this battery will protrude slightly from the rear of the laptop but will not affect functionality. For the smaller capacity battery, see our 6 Cell XPS 14 (L401X) battery. If your laptop has been running slowly or doesn t last long without a charger, you need a new battery. And when looking for a replacement battery, quality is key. That s why we use only the highest quality lithium-ion battery cells from Samsung. Higher quality cells charge faster and last longer. Laptop batteries also use computer chips to communicate with the laptop s power and safety software. We use the highest quality chips from Texas Instruments. Every battery is individually tested and comes with a 2 year warranty. This Dell XPS 14 (L401X) , XPS 15 (L501X) , and XPS 17 (L701X, L702X) is rated 7,800 mAh, one of the highest capacity li-ion batteries on the market. The higher the mAh (milli-amp hour) the longer your battery will last without a charge. This higher capacity battery will still be compatible if your original battery has a lower mAh or lower voltage rating. It just means it will last longer than the original. Brand: Voltage: Battery Capacity: Battery Type: Cell Origin: Color: Warranty: Guarantee: Useful Life: xTend computer battery 11.1 Volts - also compatible with 10.8 Volt systems 7800 mAh; 87 Whr, Runs longer than 4400 & 4800 mAh batteries 9 Cell Li-ion Samsung (South Korea) Black 2 Year Warranty 30 day full satisfaction guarantee 300-500 recharge cycles You can expect about 4-7 hours of run time with this computer battery when new, depending on your energy use. The higher capacity battery cells inside this cartridge have an energy capacity of 7800 mAh. This battery will be compatible with all 6 cell batteries or other 9 cell batteries rated at 4400 & 4800 mAh or 6600mAh capacities while providing up to 78% more run time This battery replaces the Dell laptops: Dell XPS 14, L401X, XPS 15, L501X, XPS 17, L701X, L702X. Compatible with these Dell laptop battery part numbers: 312-1123 312-1327 8PGNG 991T2021F 999T2128F AHA63226267 AHA63226268 AHA63226270 AHA63226276 AHA63226277 J70W7 JWPHF P09E WHXY3 P09E001 P09E002 P11F P11F001 P12G P12G001 R4CN5 R795X Laptop Battery Express only deals with brand new premium computer batteries. We never carry recycled or used batteries. We only use the highest quality cells inside the battery pack so you will have a long service life (300-500 recharge cycles) . We do not use cheaper battery cells which can wear out in a little as 6 months. Our inventory turns rapidly and you will always receive a freshly manufactured battery. Laptop Battery Care and Usage Over time, batteries lose their ability to hold a charge. Here are few tips to make your Dell XPS 15 battery last longer: Charge the battery to 100% before the first use. It may take a few recharge cycles for your battery to fully warm-up and give you the maximum run time. Avoid running your battery to empty as it can damage the li-ion cells Recharge your battery before it reaches 20%. Studies show that charging batteries before 20% increases the life of the battery. "Exercise" your battery by letting it go unplugged from the charger a few times a week How to extend battery life for your Dell XPS 14, 15 and 17 On average, this battery can run 7 hours without charging. Here are few tips to get even better mileage on your battery: Reduce the brightness of your screen (this is the highest drain on the battery) Remove any CDs from your disk drive Turn off Wifi and bluetooth if not in use Remove USB devices or anything else connected to the ports Keep the laptop in a cool, dry place Close any unused programs Increase your memory to 4 Gigabytes. This will create less work for your hard drive which will give you better battery mileage