NinjaBatt Battery for HP 756743-001 V104 vi04 756744-001 Envy 14 15 17 Series Probook 450 g2 g3 756478-851 756478-422 756478-421 756478-422 - High Performance [4 Cells/2200mAh]

The old battery was a little hard to get out, but once out this one just fit right in. Charged it up and laptop is working great. Tip look for screws under the rubber strips on the bottom. They pull up and screws are under them.

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.

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.

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

Worked perfectly and at a great price. 28 days later still working like a charm. Recommend.

Works great

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

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.

Batteria compatibile per i modelli scritti della descrizione del venditore, quindi mi raccomando controllate bene il codice della vostra batteria così da sostituirla con il modello giusto. La sto usando già da qualche settimana e devo dire che è un prodotto molto valido, premetto di aver già acquistato batterie di questo marchio e mi ci sono trovato bene quindi sono andato sul sicuro. Rispetta tutte le aspettative al momento, se durerà anni come l'originale non lo so ma lo spero perché promette molto bene. La consiglio!!!

Buena marca, buena calidad. La duración de la batería es buena. Tras ya casi un año de uso desde la compra, la batería todavía funciona correctamente.

Article conforme. Livré dans le délai dans la boîte aux lettres. Livré avec instructions. Aucune difficulté pour remplacer l'ancienne batterie. Se recharge de suite. Difficile d'évaluer sa longévité vu que je viens de la recevoir. Pour le moment je suis contente de cet achat.

As always, delivery was fast and wished I’d bought it sooner to be honest! Well packaged, easy to replace and has given my laptop a new lease of life, so a good purchase, very pleased.

Bra pris