CC03XL 53Wh Replacement Laptop Battery for HP ZBook Firefly 14 G7 G8 EliteBook 830 835 840 845 G7 G8 Probook 635 Aero G7 G8 Series HSTNN-DB9Q L77608-2C1 L77608-421 L78555-005 CC03053XL-PL 11.55V

Bought my laptop used and the battery it came with was very worn out, it was showing 71% of the original capacity and I wanted more life out of it. I'm running Linux (Ubuntu 24.04) so my battery life numbers will be different but at least gives you an idea compared to the old battery.The old battery running a loop of crab rave lasted 3.5hrs on max brightness, the new battery lasted around 5hrs. In actual use watched downloaded videos with no wifi and varying brightness I get 6.5hrs of battery, and a little more just web browsing so I'm pretty happy with it. With these Amazon batteries it's always kind of a guess if it will be any good but so far very happy with it.For the 'break in' I let the battery drain to 3% from it's initial charge, let it charge to 100% and then drained it to 3% again and called it good. I've cycled it twice since then, charging up to ~90% and letting it drain to 20% before charging again. I think for lithium ions it really doesn't matter but I still feel at least one full charge to near zero is good and after that just keep it between 80% and 20% and it'll last alot longer then always going from 0-100.Only have ~5 cycles on it but it's been great, I'll update if I notice the battery life dropping off a cliff, that's the only question left is how long it'll stay good.

Enjoying excellent battery life again. Perfect fit and replacement for the OEM.

I've been using the Mobik CC03XL battery for a week in my HP EliteBook 840 G7, and it's been fantastic. The battery life is impressive, lasting around 6-8 hours with heavy use, including video watching and browsing. It fits perfectly in my laptop, maintaining its sleek form. I'm fully satisfied with its performance and the way it's rejuvenated my laptop's efficiency. Highly recommended for HP users seeking a reliable battery replacement.

How sexy can a replacement battery be for a notebook? Not very.This is a fantastic replacement with safety features that are third party blessed. Swapping out the old is painless and simple. For an HP (mine is a Zbook Firefly G8), do start at the back (where screen meets base) first after removing the back panel screws. Many YouTube short vids on the process.

We install on my sons computer and it works but doesn't last long, looks like a used one :(

Works great and easy to install

I was a little nervous ordering because I wasn't sure if the laptop currently had the Shape A or Shape B battery, since I was ordering for a client. I ordered it based on the description that it would fit the EliteBook 840 G8 I was needing. It was a perfect match and was very easy to replace with the tools provided.

After my HP Elitebook 840 g7 battery had short-cut, I searched online for different options to replace it. This seller has detailed descriptions about the product, so it's very easy to follow. I easily found the right battery and purchased it. When I put the battery back on, the level of performance and reliability is just as the original one.