Dell Latitude Battery 6 Cell for E6440/E6540/E6440 E6440 ATG Type N3 x 1D 65 WH

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The potent processor shone through in multimedia tests, cranking through Handbrake in a mere 45 seconds, and finishing our Photoshop test in 4 minutes 50 seconds. Solid graphics and gaming scores also tell you that, while it may not boast the ISV certification of a Workstation, the Latitude E6540 will still handle all of your visual and media tasks with ease, thanks to an AMD Radeon HD 8790M graphics card.

When we cranked it up to maximum, the E6540 gave us 41 fps, beating the 37 fps average. The Folio 9470M and the T530 were in a dead heat at 13 fps. In keeping with current IT trends, the Latitude E6540 is available with either Windows 7 or Windows 8, to more easily integrate into your existing fleet without any unexpected compatibility issues. Our own review unit came with Windows 7 Pro preinstalled, along with a

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Since 1982, PCMag has tested and rated thousands of products to help you make better buying decisions. See how we test. Tillad ikke fuld afladning. Nutidens lithium-ion- og lithium-polymer-batterier er ekstremt følsomme over for dybafladning. Gentagen gentagelse af en sådan situation kan forårsage uoprettelig skade på batteriet. The Latitude E6540 also offers decent battery life, lasting 5 hours 56 minutes in our battery rundown test. While this falls roughly an hour behind the Apple MacBook Pro 15 (6:53), the battery will still take you through most of your workday, and thanks to Dell's ExpressCharge technology, you'll also be able to go even longer after plugging in only briefly—letting you charge your battery up to 80% within an hour of plugging in—saving you a lot of time when you're on the go.

Avoid short charging times as the battery in our device has the number of charging times specified by the manufacturer.Brug batterier. Vores genopladelige batteri er designet til brug. Kontinuerlig fjernelse af batteriet fra enheden har ikke en positiv effekt på dens tilstand. During the "World of Warcraft" test, the E6540 delivered 79 fps on Autodetect at 1080p, besting the 72 fps category average. The T530 (1600 x 900) matched our 30 fps playability threshold while the Folio 9470M (1366 x 768) missed the mark at 23 fps. Do not allow full discharge. Today's lithium-ion and lithium-polymer batteries are extremely sensitive to deep discharge. Repeated repetition of such a situation can cause irreversible damage to the battery.