TREE.NBLaptop Battery for Dell Latitude 14 15 5000 E5440 E5540 Series M7T5F VV0NF FT6D9 3K7J7 5200mAh 11.1V Replacement

Purchased to replace the old OE battery on my wife's Dell. Exact fit. I followed the included instructions to discharge the battery before charging. That step took some monitoring to not completely discharge but still hit the target range. Once recharged the battery has performed flawlessly!

Battery was recognized by the BIOS and windows and worked well.

Holds a good charge and does not over heat. Great replacement for OEM BATTERY. Average life is about four hours on single charge. Will work with windows 10 battery saver.

Replaced the old battery with this one. So far after installing this battery is working very well. Only time will tell how long it will last.

Love when product info is correct; price is right; and delivery is on-spot. No issues!

My Dell Latitude E5440 started giving me errors saying it couldn't determine the wattage and began refusing to charge the battery. From my online troubleshooting, I found the two primary suspects were the battery or the charger. The system showed the factory battery was nearing the end of its lifespan, so I ordered this as a replacement to see if that fixed the overall issue first. It didn't, so I ordered a new charger too. The initial issue resolved. However, the new battery started behaving very oddly. Each time I would close my laptop, it would be powered down when I came back instead of just going to sleep. I'd be using it and it would show a full charge and be plugged in, but would randomly give me a pop up that my battery was low and it would shoot down from 100% charge to 0% instantly. Sometimes, it would randomly lock the computer while I was using it. I switched back to my factory battery and the problems resolved instantly. Ergo, the issue was with this battery and not with anything else happening with the laptop.I thought this would be a great deal, but it's garbage. With as inexpensive as it was, it's just not worth the time or effort to return it either.

Fit like a glove, holds a good charge, great battery for my laptop!

I dislike buying replacement batteries because reviews are so inconsistent. I followed the instructions to discharge before using (not sure I got ALL the way down to 2% but close). It has been working fine for me. I get 5+ hours on battery before needing a charge and when I get the "Low Battery" warning I have plenty of time to get the charger and plug it in (vs immediate shutdown with my old battery).So I'm quite happy with the battery and would buy again. The little 'User Manual' is a nice attempt to help people get a longer battery life.Update: 9 months in and battery is still working well. About 2 times per week I run on battery only and let it wear down. Haven't timed it but still happy with the battery life.