How to Replace Your HP Laptop Battery? (Fix Draining Issues Fast)

Introduction

Introduction: Is your HP laptop running out of power quickly? Does it shut down the moment you unplug the charger? Or worse, is the battery showing signs of swelling? These are clear warnings that your battery needs immediate attention.

Replacing an HP laptop battery might sound technical, but it is actually one of the easiest DIY repairs you can do. In this 2025 guide, we’ll show you how to identify the correct model, save up to $50 on repair costs, and install your new battery safely in under 15 minutes.

Whether you own an HP Pavilion, EliteBook, or Envy, this guide is for you.

5 Signs Your HP Laptop Needs a New Battery

Batteries differ from other hardware; they are "consumables" that degrade over time. If you notice any of these signs, it's time for a change:

1. Draining Fast: Your laptop only lasts 30 minutes instead of the original 4 hours.

2. Plugged-in Only: The laptop dies instantly when the power cord is removed.

3. Slow Charging: It takes forever to reach 100%, or it gets stuck at a certain percentage (e.g., "Plugged in, not charging").

4. Overheating & Fan Noise: An aging battery forces the system to work harder, generating excess heat.

5. Swollen Battery: If your trackpad is popping up or the case is warping, stop using the device immediately. This is a fire hazard.

2. The necessity of replacing the HP laptop battery

Is it worth replacing the HP laptop battery? My answer is YES. Laptops have become an indispensable part of our daily lives and work. Replacing laptop batteries can bring us the following benefits:

● Let the device regain long-lasting battery life.

In the previous article, we summarized some signs that the HP laptop battery needs to be replaced. In other words, when your laptop battery needs to be replaced, it's usually because the battery has been used for a long time or there is a problem with the battery. Therefore, battery replacement is necessary. New batteries keep your equipment functioning properly for long periods of time when you need to move around a lot or when you're working without an outlet.

● Reduce potential safety risks of aging or damaged batteries.

Replacing a new HP notebook battery can better avoid equipment failure, overheating, crashes, and other problems caused by aging or damaged batteries. In addition, it can reduce the possibility of battery expansion, explosion, leakage, and other risk events.

● Save the cost of replacing new equipment.

When you feel helpless because of various problems caused by HP notebook batteries, and even want to replace your device with a new one, a new battery can solve your troubles. Replacing a battery can rejuvenate your device and save you the high cost of replacing it with a new one.

How to Find the Correct Battery for Your HP Laptop?

Many users buy the wrong battery because they only look at the laptop model (e.g., "HP Pavilion 15"). This is not enough. To get a 100% compatible fit, you need the Battery Part Number.

How to find it:

1. Turn off your laptop.

2. Remove the back cover.

3. Look at the battery label. You will see a code like HT03XL, TT03XL, or L11119-855.

🏆 Customer Favorites: Top 3 Best-Selling HP Batteries

Don't know which one to pick? Here are the most common replacement models trusted by thousands of Batterymall customers:

🥇 No.1 Best Seller: HT03XL (The "Pavilion Saver")

• Best For: HP Pavilion 14/15/17, HP 240/250 G7, Envy x360.

• Solves: Common swelling issues in Pavilion series.

• 👉  

🥈 Business Choice: TT03XL (For EliteBook)

• Best For: HP EliteBook 755 G5, 850 G5/G6, ZBook 15u.

• Why: Extended battery life for business meetings.

• 👉

🥉 Reliability Pick: TA03XL (For Classic Models)

• Best For: HP EliteBook 745/755/840 G4 Series.

• Why: Restores stability to older G4 laptops.

• 👉

How much does it cost to replace an HP laptop battery?

Possibly, it depends on how much it costs you to purchase the battery, and the labor and professional fees associated with it.

At present, the prices of HP notebook batteries of different brands, different purchase channels, and different old and new conditions are different. Generally speaking, the price range of HP notebook batteries ranges from 20 to 145 US dollars. But this price is not the final price you need to spend. In other words, if you ask a professional repairman to replace your HP laptop battery, you will need to pay an additional $20-50 in labor costs and professional fees.

HP Laptop Battery Replacement Cost: DIY vs. Service Center

Is it worth replacing the battery? Absolutely. Buying a new laptop costs $600+, but a battery refresh costs a fraction of that.

💡 Pro Tip: Most Batterymall batteries come with a Free Tool Kit, so you don't even need to buy a screwdriver!

How to replace an HP laptop battery?

● Preparations before replacing the battery

1. Identify and obtain the correct HP laptop battery.

Before replacing your HP notebook battery, you need to purchase a new replacement battery. So, how do you know which battery to buy for your HP laptop? This involves the model of your device and its battery specifications. First, you need to check your HP laptop model. (This information can be found in the system information or on a sticker on the bottom of the laptop.) Second, find the battery specifications on the battery or in the user manual and note the battery's voltage, capacity, and component number. You can then use this information to find a suitable replacement battery.

2. Choose a reputable battery purchasing channel.

Currently, the market is still flooded with fake and inferior laptop batteries. Therefore, in order to ensure that your HP laptop can run safely, it is best to choose a reputable purchasing channel when purchasing replacement batteries. For example, Batterymall.com. We will provide a two-year warranty for the battery you purchase, so you don’t have to worry about the quality of the battery.

3. Back up important data.

Before replacing the laptop battery, you can back up important data on the device. This prevents accidental battery replacement that could lead to data loss.

4.  Prepare the necessary tools and equipment.

Having the right tools and equipment can make your battery replacement process go much more smoothly. You will need to have a screwdriver ready that matches your HP laptop. It's also a good idea to have a plastic pry tool and a small container for organizing screws and components on hand. These tools reduce your risk of making mistakes during battery replacement.

Step-by-Step: How to Replace an HP Laptop Battery Yourself

You don't need to be a tech expert. Follow these simple steps.

Tools Needed:

• Philips screwdriver (Included in our package)

• Plastic pry tool (Included in our package)

• Clean workspace

Step 1: Safety First Turn off your HP laptop and disconnect the AC adapter. If you have an external battery (older models), simply slide the latch to remove it. For internal batteries, proceed to Step 2.

Step 2: Remove the Back Cover. Flip the laptop over. Unscrew all visible screws. Note: Some HP models hide screws under the rubber feet strips. If the cover won't open, check under the rubber strips.

Step 3: Disconnect the Old Battery. Once the cover is off, locate the battery. Do not pull hard. First, gently disconnect the battery connector cable from the motherboard. Then, remove the screws holding the battery in place.

Step 4: Install the New Battery. Place your new BatteryMall battery in the slot. Screw it in securely. Reconnect the battery cable to the motherboard.

Step 5: Test Before Closing. Before screwing the back cover on, turn the laptop over and press the power button. If it turns on, great! Turn it off again and secure the back cover screws.

NOTE: Make sure the newly connected replacement battery is placed correctly. Otherwise, a battery connection that is too loose or too tight may damage certain device components. Additionally, after replacing a new battery, it is a good idea to open your HP laptop and perform a battery test to ensure that the replacement battery is functioning properly.

How to Calibrate Your New Battery (Don't Skip This!)

To ensure your new battery displays the correct percentage and lasts longer, follow these "Calibration" steps in the first week:

1. Charge the new battery to 100%.

2. Use the laptop until the battery drains to 0% and shuts off.

3. Charge it back up to 100% without interruption. Repeat this cycle 1-2 times to activate the battery's chemical performance.

Precautions for replacing the HP laptop battery

1. Pay attention to electrostatic protection.

Static electricity can cause damage to your HP laptop during the battery replacement process. Therefore, you can take some electrostatic protection measures. For example, work on a non-conductive surface, lay an anti-static mat on the workbench, wear an anti-static wrist strap, etc.

2. Avoid physical damage.

In order for the battery to be used safely, it is important to avoid any form of physical damage. Dropping, puncturing, or excessive force may cause battery damage or even lead to dangerous situations such as battery leakage and fire. Therefore, you need to be careful when removing and installing the battery.

3. Prevent the influence of extreme temperature and humidity environments.

To prevent damage to the device, it is best to replace the battery in an environment with appropriate temperature and humidity.

4. Dispose of old batteries properly.

For old disassembled batteries, recycle them correctly. Avoid throwing old batteries directly into the trash or discarding them randomly, as this may cause safety hazards and even cause environmental pollution.

How to extend HP laptop battery life？

• Keep your laptop cool

High temperatures will accelerate the consumption and aging of HP notebook batteries. To keep your battery healthy and extend its life, you should avoid direct sunlight or high temperatures when using or placing your laptop. Also, it's best not to place your laptop on a soft surface, such as a mat or blanket, as this may block the vents. Of course, you can buy a laptop cooling pad, which will help dissipate heat from your device.

• Check whether the charging cable is in good condition

Using a damaged or low-quality cable may cause slow charging or damage the battery. Therefore, it is best to use the cable officially provided by HP. At the same time, if you find problems with the cable, you should replace it in time to avoid damage to the battery and device.

• Close unused applications

Running too many applications can drain battery power. You can selectively close unused applications or turn off unnecessary background processes and services through system settings to reduce battery consumption.

• Unplug unnecessary accessories

External devices such as mice, headphones, and USB drives may draw power from the laptop battery. Therefore, you can avoid using too many external devices at the same time to reduce the burden on the battery.

• Adjust screen brightness appropriately

The screen is one of the most power-hungry parts of a laptop. Therefore, you can lower the screen brightness appropriately to save battery power.

• Use your laptop’s built-in power-saving tools

If your HP laptop model offers settings such as "Optimize battery charging," "Optimize video streaming when using battery," etc., you can turn them on. These system-built-in settings can help extend the battery life of your HP laptop.

Summarize

Don't let a dying battery limit your productivity. Replacing your HP laptop battery is a low-cost, high-reward investment that makes your laptop feel brand new again.

Ready to fix your laptop? 👉 and get fast shipping today!