RJ40G 4-Cell 63Wh Laptop Battery Replacement for Dell Latitude 15 5520 Latitude 14 5420 Precision 15 3560 Series M033W 01K2CF 075X16 WY9DX P137G P137G001 P104F P104F001 0WK3F1 0M3KCN 15.2V 3941mAh

I got this to replace a battery that had less than 70% charge in it.The replacement process was straightforward and didn't require any instructions, thankfully. If you've ever opened a laptop before and replaced a component (HDD, SSD, RAM, etc.) this was only slightly more challenging. Dell made the process as easy as they could while allowing the laptop to retain a decent size. If you do not have much experience opening laptops and replacing components, using this replacement battery to replace your defective battery may be a bit challenging and you should seek assistance, in my opinion.I was very glad to have the tools included even though I did not need them, but had this laptop never been opened before, the plastic pick included would have been so greatly needed to ensure the chassis is not damaged by metal tools. I did not use these tools during this process as I have my own and my laptop had been opened before, but greatly to have them included with the replacement battery.After installing the replacement battery and closing up the laptop chassis and then turning on the laptop, it did take a moment for my OS to notice the new battery. The laptop would not boot without being connected to power and once in the OS, the battery indicated 29% charge and did not move from there for several minutes. After a few minutes, the battery began showing 11% and then climbed to 57% before I turned off the laptop. Checking the health of this laptop in my OS, my laptop reports this has a 98% health rating which is still decent for a replacement battery like this.

Works perfectly. The included tools were a nice touch.

Very pleased with the extra battery life provided. Installation was not difficult, just be patient and follow one of the many guides available online. I would rather spend a few bucks to get through the school year and summer than emergency purchase a new laptop. Also, might make some of that money spent back when selling.

The battery fit just the way it was supsupposed to. Very pleased.

The battery was easy to install in my Dell laptop. There were no installation instructions, but there were instructions on how to charge the battery once installed. YouTube had several videos showing how to install the battery.

Cannot make a proper judgement as computer evidently ha other operational problems.

Installed fine - and now the laptop is not recognizing the battery correctly and not holding a charge at all. Turning off after only a few minutes on battery. Buy a real Dell battery if you can't afford to roll the dice on this. I get more life by putting the old real Dell battery back in. And yes we followed standard guidance on charging before use - it's just not working as the chip is incompatible or something.Return window closed before user installed so now I have a $90 knockoff piece of toxic garbage.

This battery fit well, however, It only lasted 6 months and will not charge or be recognized by the laptop. Tried all recommended trouble shooting steps to no avail. Even replaced the charger. It was months beyond the return period so I direct messaged the seller. They responded in less than 1 day. Offered to replace battery free of charge without having to return the old one. What amazing customer service. Would use this seller again definitely!