807956-001 HP Battery for HS04 HS03 807957-001 807611-421 HSTNN-LB6U Notebook 15-AY039WM TPN-I119 G4/G5 240 245 246 250 256 - High Performance

Replaced my laptop battery with this and it was way easier than I expected. I have no experience with this kind of thing, but the install was pretty straightforward and I was able to do it myself. It’s been working great since — my laptop holds a charge again and runs like it should. Definitely a good option if you’re trying to save money and fix your laptop yourself.

I don’t write reviews often, but this laptop battery deserves some recognition. From the moment I installed it, my laptop instantly felt like it had a second wind. The installation was seamless—no tech background needed. It charged quickly, held the power beautifully, and I could immediately feel the difference in performance. As someone who relies on her laptop daily for both creative flow and client work, having dependable battery life is non-negotiable. This gave me peace of mind and hours of uninterrupted productivity. It also came well-packaged with clear instructions and even felt more solid than the original battery. I’m genuinely impressed by the quality. If you're on the fence, consider this your sign—NinjaBatt delivered. Highly recommend.

It came well packaged and fit perfectly as promised. Charged quickly and is working well

Battery is similar to original. it charges fast BUT runs out fast aswell... glad it was compatible. And came in nicely packaged

There was some issues with shipping by Amazon said it was going to take almost 2 weeks but it came in less than a week, so I popped it in and didn't get any power and I thought it was going to be like buying the cheap junk batteries, I left battery in the Hp 15-Bs234wm laptop and it drained it down so I charged it and found out that there was No Driver for Charging system, I put a clock on it and after 4 hours of reading I turned it off and checked it the next day and at 20% I charged it again as the instruction say, I did the next charge watching YouTube videos for 31/2 hours and it was at 35% still so read the News paper and finally charged it again and I haven't turned it on yet since I'm going to install some software I bought for OBD2 and I'll see how it does with diagnostics on the Ford but for the price it's fantastic value compared to the off Brand Hattie's I've bought also I'm going to see if they have one for My old tank of a Dell laptop 1501 Inspiron hopefully they have one cause I have gotten a descent battery for my Dell every best has been an hour,, so these Ninja batteries are worth the money so far hope that they stand up over time!

Battery was the right one, fit perfectly and is working as advertised.

I am quite happy with this new battery for my laptop ! I was able to install it and remove the old one all on my own !! The process was extremely simple ! The price was just perfect..

So far this battery is perfect. The hardest part of the installation was opening up my laptop. Once you get in, there are about 5 screws to remove and the battery slides right out, installation in the same in reverse. I gave it a full charge before using the laptop. The original battery wouldn't even accept a charge, so everything was dead. It initially took quite some time for the computer to boot up. Now it functions as it's supposed to, I've used it a lot since replacing the battery and I still have 86% power remaining. It holds it's charge well and all the mounting holes lined up as they should. FYI...the laptop went back together faster than opening it.