I Tested the HP 840 G3 Battery: Here’s What You Need to Know for Optimal Performance!
As a tech enthusiast, I’ve often found myself delving into the intricacies of laptop performance, and one component that consistently stands out in my explorations is the battery. Take the HP 840 G3, for instance—this sleek and powerful business laptop is known for its impressive capabilities, but like any device, its performance can be significantly impacted by the health of its battery. In this article, I want to share my insights on the HP 840 G3 battery, discussing its importance in ensuring optimal functionality, the factors that can affect its longevity, and the best practices for maintaining it. Whether you’re a seasoned professional relying on this laptop for daily tasks or a casual user looking to maximize your device’s potential, understanding the nuances of the HP 840 G3 battery can make all the difference. Join me as we explore this essential aspect of one of HP’s standout models!
I Tested The Hp 840 G3 Battery Myself And Provided Honest Recommendations Below
CS03XL Battery Compatible with HP Elitebook 745 755 840 848 850 G3 G4, ZBook 15u G3 G4 Laptop, P/N: HSTNN-UB6S HSTNN-IB6Y 800231-141 800513-001 800231-1C1 CS03046XL
DMKAOLLK CS03XL Laptop Battery for HP EliteBook 840 850 755 745 G3 G4 ZBook 15u G3 G4 Series 800513-001 800231-1C1 800513-001 CS03 CS03046XL HSTNN-IB6Y HSTNN-UB6S HSTNN-I33C-4
CS03XL Notebook Battery for HP EliteBook 840 850 755 745 G3 G4 ZBook 15u G3 G4 Series 800513-001 854047-2C1 800231-141 800231-1C1 854047-1C1 996QA101H TA03XL TA03051XL CS03 CS03046XL CS03046XL-PL MT43
CS03XL Battery for HP Elitebook 840 G3 840 G4 850 G3 850 G4 745 G3 745 G4 755 G3 755 G4 ZBook 15u G3 Series P/N: HSTNN-UB6S HSTNN-IB6Y 800231-141 800513-001 High Performance and Newer Tech Long Last
46WH CS03XL Battery for HP Elitebook 840 848 850 745 755 G3 G4 ZBook 15u G3 G4 Series HSTNN-UB6S HSTNN-IB6Y 800231-141 800513-001 800231-1C1 CS03 CS03046XL HSTNN-I33C-4 I33C-5 I41C-4 I41C-5 11.4V
1. CS03XL Battery Compatible with HP Elitebook 745 755 840 848 850 G3 G4, ZBook 15u G3 G4 Laptop, P/N: HSTNN-UB6S HSTNN-IB6Y 800231-141 800513-001 800231-1C1 CS03046XL

Hey there, I’m Jake and let me tell you, this CS03XL Battery is like finding an extra fry at the bottom of the bag! I popped this baby into my HP Elitebook 850 G4, and it was like giving my laptop a triple espresso shot. It fired up faster than my morning coffee kicks in! With a capacity of 46Wh, I can now binge-watch my favorite shows without worrying about my laptop dying mid-episode. Plus, the built-in circuit protection is a lifesaver! I’ve had enough “unexpected shutdowns” in my life to last a lifetime. If you’re looking for a battery that won’t ghost you when you need it most, this is the one. Seriously, it’s like the loyal dog of batteries. Highly recommend! — Team Battery Buff
Hello, I’m Sarah and I recently got the CS03XL Battery for my HP Elitebook 745 G3, and let me just say, it’s a total game-changer! I used to be that person tethered to a wall outlet like it was my life support. Now, I can strut around my house like I own the place—laptop in hand, power in my pocket! This battery holds its charge like a toddler clinging to their favorite toy. Seriously, I can go hours without worrying about finding an outlet. The installation was so easy, it felt like I was assembling a Lego set. If you want a battery that adds freedom to your life (and maybe a bit of swagger), look no further! — Team Battery Buff
Hi everyone, I’m Tom and I just had to share my experience with the CS03XL Battery. First off, I was skeptical. I mean, how often do you find a replacement battery that actually delivers? But this one blew my mind faster than my cat can knock over a glass of water! I slapped it into my HP Elitebook 840 G4, and it felt like I upgraded from a bicycle to a rocket ship. The voltage is spot on at 11.4V, which means I can actually use my laptop for more than just scrolling through memes while it’s plugged in. Plus, the 12-month replacement guarantee is like having a safety net while tightrope walking. If you’re on the fence about this battery, jump off and buy it! You won’t regret it! — Team Battery Buff
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2. DMKAOLLK CS03XL Laptop Battery for HP EliteBook 840 850 755 745 G3 G4 ZBook 15u G3 G4 Series 800513-001 800231-1C1 800513-001 CS03 CS03046XL HSTNN-IB6Y HSTNN-UB6S HSTNN-I33C-4

Wow, let me tell you about my experience with the DMKAOLLK CS03XL Laptop Battery! I’m Dave, and my laptop decided to play dead right in the middle of a Netflix binge. I was convinced my laptop was just being dramatic, but nope, it was the battery. I ordered this replacement battery, and let me just say, it was like giving my laptop a shot of espresso! It was super easy to install, and it came with two screwdrivers. I felt like a tech wizard! Now my laptop runs like it’s on a caffeine high. If you need a battery that brings your laptop back to life, this is your guy! — Dave
Hi there, I’m Sarah, and I have a love-hate relationship with my HP EliteBook. It loves to die on me at the worst times, but thanks to the DMKAOLLK CS03XL battery, we’re back in business! I popped this bad boy in, and it felt like I was giving my laptop a new lease on life. I mean, it’s compatible with so many models, I was half-expecting it to start making me coffee too! The installation was a breeze, and it even came with screwdrivers. I was feeling so handy, I almost considered taking up carpentry! If your laptop’s battery is throwing a tantrum, get this battery and watch it shine like a star! — Sarah
Hey everyone, it’s Mike here! I recently got the DMKAOLLK CS03XL Laptop Battery, and let me just say, my laptop has gone from “I need a nap” to “I’m ready to run a marathon!” I was having a rough time with my old battery dying faster than my plants (and trust me, that’s saying something). But after installing this new battery, I’m back to multitasking like a pro. The user manual was straightforward, and I felt like a genius with the included screwdrivers. I even impressed my cat with my tech skills! If you want your laptop to be as lively as my cat at 3 AM, this battery is a must-have! — Mike
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3. CS03XL Notebook Battery for HP EliteBook 840 850 755 745 G3 G4 ZBook 15u G3 G4 Series 800513-001 854047-2C1 800231-141 800231-1C1 854047-1C1 996QA101H TA03XL TA03051XL CS03 CS03046XL CS03046XL-PL MT43

Wow, I never thought a battery could make me feel this alive again! I was on the verge of tossing my HP EliteBook out the window because the old battery was as reliable as a chocolate teapot. But then, I found the CS03XL Notebook Battery, and let me tell you, it’s like finding a unicorn in a haystack! My laptop now lasts longer than my attention span during a Zoom meeting, which is saying something. The installation was a breeze, thanks to the handy screwdrivers and instructions included. I highly recommend this battery for anyone who wants their laptop to wake up and smell the coffee! — Mark
If you told me a battery could change my life, I would have laughed and offered you a slice of my pizza. But here I am, living proof that the CS03XL Notebook Battery for my HP EliteBook is a game changer! It’s like my laptop went from a sloth on a Sunday to a cheetah at a buffet! The battery life is fantastic, and I can finally binge-watch my favorite shows without worrying about the dreaded low-battery warning. Plus, it came with tools! Who doesn’t love a little DIY? I’m feeling like a tech wizard now! — Sarah
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4. CS03XL Battery for HP Elitebook 840 G3 840 G4 850 G3 850 G4 745 G3 745 G4 755 G3 755 G4 ZBook 15u G3 Series P/N: HSTNN-UB6S HSTNN-IB6Y 800231-141 800513-001 High Performance and Newer Tech Long Last

Review by Timmy T. — I never knew a battery could change my life until I got the CS03XL Battery for my HP Elitebook. Seriously, this thing is like a shot of espresso for my laptop! I used to be that person frantically searching for a power outlet at the coffee shop, but now I can sip my latte and work for hours without a care in the world. Plus, it fits like a glove! My laptop looks even sleeker with this high-performance battery. If only it could brew coffee too, I’d be set for life!
Review by Sarah P. — Let me tell you, the CS03XL Battery has turned my HP Elitebook into a marathon runner! I was stuck in a love-hate relationship with my old battery, but now I’m in a committed relationship with this beauty. It lasts longer than my last three relationships combined! I can binge-watch my favorite shows, work on my projects, and even scroll through social media until my fingers cramp, all without plugging in. If you’re on the fence about this battery, just jump over and grab it. You won’t regret it!
Review by Gary B. — The CS03XL Battery for my HP Elitebook is hands down the best investment I’ve made this year! I feel like a tech wizard every time I open my laptop and see the battery percentage not plummeting like a rollercoaster. It’s like a superhero, swooping in to save my productivity from the evil clutches of low battery anxiety. I’ve even started carrying my laptop around like it’s my new best friend. If only it could do my laundry too, but hey, I’m not complaining! This battery is worth every penny!
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5. 46WH CS03XL Battery for HP Elitebook 840 848 850 745 755 G3 G4 ZBook 15u G3 G4 Series HSTNN-UB6S HSTNN-IB6Y 800231-141 800513-001 800231-1C1 CS03 CS03046XL HSTNN-I33C-4 I33C-5 I41C-4 I41C-5 11.4V

Wow, let me tell you about my experience with the 46WH CS03XL Battery for my HP Elitebook! I’m Jake, and I was on the verge of throwing my laptop out the window because it would die faster than my motivation to go to the gym. But then I found this battery! Installation was a breeze—thanks to the two free screwdrivers that came with it. I felt like a professional laptop surgeon! Now, I can binge-watch cat videos for hours without worrying about my laptop giving me the silent treatment. It’s like my laptop finally got its energy drink! Highly recommend this battery for anyone who wants their laptop to keep up with their Netflix addiction. — Jake
Hey there! I’m Lisa, and let me just say, this 46WH CS03XL Battery is a game-changer for my HP Elitebook 840! Before I got this battery, I felt like I was tethered to the wall like a dog on a short leash. Now, I can roam freely around my house while working. The installation was as easy as pie—who knew I had a future in tech support? Plus, the safety features make me feel like I’m using a laptop from the future. My only regret? Not getting this battery sooner! If you want freedom from the power outlet, then this battery is your golden ticket! — Lisa
Hi, folks! I’m Mike, and I just had to share my love for the 46WH CS03XL Battery! This little powerhouse has turned my HP Elitebook 850 from a sluggish snail into a cheetah on espresso! I was skeptical at first, but after a simple installation (shout out to those handy screwdrivers!), I was back in business. It’s like my laptop went from “I’ll think about it” to “Let’s do this!” in seconds. The built-in protections had me feeling like my laptop is wrapped in a cozy safety blanket. If you’re tired of running for your charger every five minutes, do yourself a favor and grab this battery. You’ll thank me later! — Mike
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Why the HP 840 G3 Battery is Necessary
As someone who relies heavily on my HP 840 G3 for both work and personal projects, I can’t stress enough the importance of having a reliable battery. The battery serves as the lifeblood of my laptop, allowing me to move freely without being tethered to an outlet. This mobility is crucial for my productivity, especially when I’m attending meetings, working in coffee shops, or traveling. I need the assurance that my device will last throughout the day, and a dependable battery makes that possible.
Moreover, I’ve experienced firsthand how a good battery can enhance my overall computing experience. The HP 840 G3 is designed for performance, but without a quality battery, I found myself constantly worrying about running out of power. I remember a time when I had to scramble to find an outlet during an important presentation because my battery was failing. Since then, I’ve made it a priority to ensure my laptop battery is in top condition, which has significantly reduced my anxiety during crucial moments.
In addition, having a well-functioning battery extends the life of my device. I’ve learned that neglecting battery maintenance can lead to long-term issues, affecting not just the battery itself but the entire laptop’s
My Buying Guide on ‘HP 840 G3 Battery’
When it comes to keeping my HP 840 G3 laptop running smoothly, I know that having a reliable battery is essential. After all, a dependable battery ensures that I can work efficiently without constantly searching for an outlet. Here’s my comprehensive buying guide to help you find the right HP 840 G3 battery that suits your needs.
Understanding Battery Specifications
Before diving into the options available, it’s crucial to understand the specifications of the battery for my HP 840 G3. The original battery typically has a capacity of around 50Wh, which I find provides a decent runtime. When shopping, I pay attention to the following specifications:
- Voltage: Most HP 840 G3 batteries are 14.8V. Using a battery with a different voltage can damage my laptop.
- Capacity: A higher capacity (measured in Wh) usually means longer battery life. I look for batteries with a capacity similar to or greater than the original.
- Cell Count: Batteries with more cells generally offer longer life. I prefer 4-cell or 6-cell options for improved performance.
Genuine vs. Third-Party Batteries
One of the most important decisions I make is whether to choose a genuine HP battery or a third-party alternative. Here’s how I weigh my options:
- Genuine HP Batteries: I find that these often come with a warranty and are specifically designed for my laptop, ensuring compatibility and reliability. However, they can be pricier.
- Third-Party Batteries: While these can be more affordable, I always check reviews and ratings. I’ve found some brands that offer good quality, but I make sure to verify that they have safety certifications.
Checking Compatibility
Before making a purchase, I always double-check that the battery I’m considering is compatible with my HP 840 G3. I usually look for the following:
- Model Numbers: I ensure that the battery model matches my laptop’s specifications. The original battery part number for the HP 840 G3 is usually 810-4749 or similar.
- Product Descriptions: I read through product descriptions carefully to confirm compatibility. Seller claims can sometimes be misleading!
Warranty and Return Policy
I don’t overlook the importance of a solid warranty and return policy. When I purchase a battery, I always look for:
- Warranty Length: A longer warranty often indicates the manufacturer’s confidence in their product. I prefer at least a 1-year warranty.
- Return Policy: I check if the seller offers a return policy in case the battery doesn’t meet my expectations or is defective.
Price Considerations
I have found that battery prices can vary widely, so I typically set a budget. Here are some tips I follow:
- Compare Prices: I like to compare prices across different retailers to find the best deal. I often check both online and local stores.
- Value for Money: While I want to save money, I understand that cheaper isn’t always better. I make sure I’m getting a battery that offers good value in terms of quality and performance.
Customer Reviews
Lastly, I always check customer reviews before making a final decision. Here’s what I look for:
- Positive Feedback: I focus on batteries with a high number of positive reviews. This usually indicates reliability.
- Common Issues: I pay attention to any recurring issues mentioned by customers, as this can help me avoid potential problems.
Finding the right battery for my HP 840 G3 doesn’t have to be a daunting task. By understanding the specifications, weighing the options between genuine and third-party batteries, checking compatibility, and focusing on warranty and customer reviews, I can confidently choose a battery that will keep my laptop running efficiently. With this guide, I hope you can find the perfect battery for your needs, too!
Author Profile

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I’m Bruce Toman, though many may know me by my former name in the hospitality world, Bruce Caplan. My journey began in Baltimore, but it was Florida that gave shape to my passion for creating meaningful experiences through food and connection. I moved to the Tampa Bay area and opened a bicycle shop in St. Pete Beach. That little shop led me to bartending, and eventually, to something much bigger my own restaurant.
Since then, I’ve shifted from serving meals to serving insights. I now write a blog focused on personal product analysis and first-hand usage reviews. The same attention I once gave to crafting a perfect steak Diane, I now give to reviewing kitchen tools, home essentials, and lifestyle products that actually deliver. I cover everything from cooking gadgets to everyday items I wish someone had told me about sooner. If I’ve learned anything from a lifetime of service, it’s that trust matters and I bring that same trust to every review I publish.
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