BN03XL L77034-005 Laptop Battery Replacement for HP Envy 13 13-AY 13-ba 13-AR Envy X360 15 2020 15-ED 15M-EE 15M-EE0023DX 15M-EE0013DX Series Notebook L73965-271 L76985-271 HSTNN-DB9N 51Wh

Installed perfectly to Lenova Ideapad. Have charged 3 times with use it discharged normally with expected lifetime. Tools included were helpfull but none marched the screws to factory installed battery.

Loved that this came with the screw drivers and pry tool needed to get the job done. Battery fit my Lenovo Flex14IWL perfectly. Have a couple of cycles on it now and it is lasting for hours.

I feel like I have a new toy! My six-year-old laptop was down to one hour and nineteen minutes on a full charge. After an easy half-hour operation, it's back to its original time of nine hours on a full charge. Not bad for an investment that's only five percent of my laptop's cost. Four types of screwdrivers are included. Three of them are magnetic. I only needed two. I'm guessing the manufacturer has included different screwdrivers because different laptops use different bolts. Clever. The plastic wedge was ineffective. Use the thinnest flat bladed screwdriver from your toolbox. The thinner the better. Once you get one tab loosened, it's easy to get to the next one for cover removal. Watch the YouTube instruction for Lenovo battery change to see where you don't want to start removing the back. My original battery had a date on it showing it was made about the same time as my laptop. The Sunnear battery doesn't have a date on its front. I just happened to turn it over and saw "2022 3". Did I get a two-year-old battery? It was charged to 83% out of the package and it's working perfectly now. Will it work for six years like the Lenovo battery? Actually, at the cost I'd be happy if it only lasted for four years if it is a two-year old battery.

This battery is functioning fine. It's not easy to install these but that is because of the design on the laptop. It is not because of an issue with the battery. I have found the life to not be as good as expected. A fully charged battery will last for about 5 days. I cannot blame the battery for this as the old battery did not hold a charge for long at all. I think there are some leakages with the computer itself. This is probably not an issue with the battery. I was hoping to get much longer life with the new battery, but I cannot point to it being the problem.

I have a Lenovo Flex 6 laptop that I left unused for too long, and it became completely unusable because the battery wouldn't hold any charge at all and even when it was plugged in would be EXTREMELY slow. I took a chance on this replacement battery and am extremely pleased, as now it's fast like a new laptop! The battery has a long life of 6-7 hours. So, this is well worth the money if your laptop is in a similar situation to mine! It comes with all the tools necessary for installation. It took about 15 minutes to install. The screws are a bit fiddly but otherwise the process was fairly easy. Getting the bottom panel of the laptop was tricky - I had to watch a YouTube video to make sure I was prying it off correctly.

UPDATE: second battery also will not fully charge over 60%. Cycled battery 4 times. Model and battery match claimed compatible items. Flex pad 14IML. L18C4PF3. Second battery came at 14% first Battery came with 49% charge and will not charge over 60% charge. Tried the drain and recharge like instructions say 4times. Defective

Works great. My old battery was starting to die, and I was pretty surprised by how cheap this was for how good it has been serving me. I also appreciate the little tools that were included. It also fit just fine in my HP Spectre x360, which I received in 2019.

I can’t complain about the product. The battery was packed really well. It matched the part I needed but unfortunately it was not the part that that fixed the problem. So now I have to decide if I want to spend more on the laptop than what it’s worth. I did like that it came with a tool set to help with installation a little easier.