Have you noticed that the laptop body is in the area touchpad or keyboards Has it become convex, as if it is being inflated from the inside? This is an alarming signal that cannot be ignored. Bloating can be caused by several reasons - from swollen battery to mechanical damage to internal components. In this article, we will look at why this happens, how to diagnose the problem yourself, and what to do to avoid serious consequences - from motherboard failure to fire.

If the laptop begins to "swell", this is not just a cosmetic defect. In 80% of cases it is to blame swollen lithium-ion battery, which, if further ignored, can lead to a short circuit or even a fire. But sometimes the reason lies in the deformation of the case due to overheating, liquid ingress or manufacturing defects. We will analyze each scenario in detail so that you can quickly take action.

Why does a laptop swell around the touchpad and keyboard: the main reasons

Swelling of the laptop case is always a consequence of internal problems. Let's look at the most common reasons, starting with the most dangerous.

1. Swollen battery

Lithium-ion and lithium-polymer batteries degrade over time, especially if the laptop is used under extreme conditions (overheating, deep discharge, mechanical shock). If the integrity of the battery cells is damaged, gas formation, which causes the battery to physically expand. This is the most common cause of swelling in the touchpad area, as the battery is usually located under or next to the keyboard.

2. Overheating of components

If the laptop's cooling system is clogged with dust or the thermal paste is dry, the processor and chipset may overheat. Prolonged overheating causes the case to warp, especially in areas with thin plastic panels (for example, under the keyboard). In some cases, the plastic even begins to melt, creating the appearance of “bloating.”

3. Liquid ingress

Spilled tea, coffee, or water can seep under the keyboard and cause contact corrosion or internal components (such as battery seals) to swell. As a result, the case is deformed and the electronics fail. Laptops with a metal case are especially vulnerable in this regard - liquid accumulates at the joints and does not evaporate for a long time.

4. Mechanical damage

Shocks, falls, or even strong compression (for example, if the laptop was lying under heavy objects in a backpack) can cause deformation of the case. Sometimes this is accompanied by swelling if the internal structure (for example, the radiator or battery) is damaged.

5. Factory defect or poor quality assembly

In rare cases, bloating may be a consequence case defect or incorrect installation of components at the factory. For example, if the battery is fastened too tightly and does not have room for thermal expansion, over time it begins to put pressure on the cover.

  • 🔋 Battery: 70% of bloating cases are battery related, especially in laptops over 3 years old.
  • 🔥 Overheat: More often found in gaming laptops (ASUS ROG, MSI, Acer Predator).
  • 💧 Liquid: Even a small amount of moisture can cause bloating after a few days.
  • 🛠️ Mechanics: Laptops with thin body (MacBook Air, Dell XPS) are more vulnerable.

How to determine that the battery is swollen: signs and diagnostics

If the laptop case is swollen, the first thing you need to figure out is whether the battery is to blame. Here's how to do it:

Visual signs:

  • 👀 The laptop cover under the keyboard or touchpad has become convexas if it were being lifted from within.
  • 🖱️ The touchpad began to “play” or sag when pressed (this happens when the battery presses on it from below).
  • ⌨️ The keyboard keys have become tight or, on the contrary, are falling through (the battery can put pressure on the button mechanism).
  • 🔌 The laptop does not hold a charge or suddenly turns off, even if it shows 100% charge.

Physical check:

Carefully place the laptop on a flat surface and try to wiggle it at the corners. If the body “walks” or a characteristic crunch (this is the bursting of gas bubbles inside the battery), which means that the battery is definitely swollen. You can also press lightly on the swollen area - if it springs, this confirms the diagnosis.

Software diagnostics:

Download a battery monitoring utility, such as BatteryInfoView (for Windows) or coconutBattery (for macOS). If the actual battery capacity has dropped below 50% of the nominal, and the charging cycle exceeds 500–1000, this indirectly indicates degradation and possible swelling.

⚠️ Attention: If the battery is swollen so much that the laptop body is deformed, it's impossible continue to use it even if it still turns on. The risk of short circuit and fire increases significantly.
📊 How often do you check the condition of your laptop battery?
  • Never
  • Once a year
  • Every six months
  • Only when problems arise

What to do if the battery is swollen: step-by-step instructions

If you have confirmed that the problem is with the battery, you need to act quickly. Here is the algorithm of actions:

1. Immediately unplug your laptop

Don't just turn it off, disconnect the power supply and remove the charging cable. If the laptop does not turn off (for example, due to freezing), press the power button for 10-15 seconds to force shutdown.

2. Remove the battery (if possible)

In some laptops (Lenovo ThinkPad, Dell Latitude) the battery is removable - it can be removed by sliding the latches on the bottom cover. B MacBook, HP Spectre and other ultrabooks, the battery is usually soldered in - in this case, removing it yourself is dangerous.

3. Do not use the laptop without replacing the battery

Even if you have removed the battery, connecting the laptop to the network without it is risky - a swollen battery could damage the power controller. It is better to contact the service immediately.

4. Dispose of old battery properly

Lithium-ion batteries should not be thrown into regular trash! Take it to an electronics collection point or service center and they will send it for recycling. If the battery is very swollen, place it in non-flammable container (such as a metal can) before disposal.

Disconnect the laptop from the mains|Remove the battery (if removable)|Do not turn on the device until the battery is replaced|Dispose of the old battery according to the rules|Contact a service for diagnostics-->

5. Battery replacement

If the laptop is under warranty, contact the official service center - they will replace it free of charge (if the swelling is not your fault). For older models, you can buy a new battery yourself, but make sure it is original or certified. Cheap analogues often swell even faster.

Laptop model Average battery life Replacement cost (original), ₽ Risk of bloating after 3 years
MacBook Pro (2018–2020) 3–4 years 12 000–18 000 High
Lenovo ThinkPad T-series 4–5 years 6 000–10 000 Medium
ASUS ROG (gaming) 2–3 years 8 000–15 000 Very tall
HP Pavilion 3–4 years 5 000–9 000 Low
Acer Swift 3 years 4 000–7 000 Medium

What to do if the swelling is not due to the battery?

If after checking it turns out that the battery is in order, the cause of the swelling lies elsewhere. Let's consider possible scenarios and solutions.

1. Overheating and deformation of the case

If the laptop constantly overheats, the plastic parts may become deformed. Check the temperature using HWMonitor or Core Temp. If the processor heats up above 90°C under load, you must:

  • 🧹 Clean the cooling system from dust (you can use compressed air).
  • 🔧 Replace thermal paste on the processor and chipset.
  • 🖥️ Use a cooling pad (especially for gaming laptops).

2. Liquid ingress

If the laptop has been in contact with liquid, even if it has been a long time, the moisture could cause internal components to corrode and swell. In this case:

  • 🚫 Do not turn on your laptop if it is wet.
  • 🌬️ Dry it for 24-48 hours in a dry place (silica gel can be used).
  • 🔍 Contact a service to clean the board from oxidation.

3. Mechanical damage

If the laptop was dropped or pressed on, the case or internal components (such as the heatsink) could become deformed. In this case, only disassembling and replacing damaged parts will help. It is not recommended to do this yourself - there is a risk of damaging the motherboard.

⚠️ Attention: If bloating is accompanied extraneous sounds (crackling, hissing) or burning smell, immediately turn off the laptop and do not turn it on until examined by a specialist. These may be signs of a short circuit.
What happens if you ignore bloating?

If the cause of bloating is not eliminated, the consequences can be serious:

- Fire: A swollen battery may catch fire, especially when charging.

- Motherboard failure: The deformed housing puts pressure on the components, which leads to microcracks.

- Data loss: If swelling damages the drive (SSD/HDD), it will be difficult to recover the information.

- Irreversible deformation: The case may crack and the keyboard or touchpad may no longer work.

How to prevent laptop swelling: preventive measures

It is better to prevent bloating than to deal with the consequences later. Here are the key rules for laptop care:

1. Correct battery charging

  • 🔌 Do not keep your laptop constantly connected to the network. Optimally, charge up to 80% and discharge to 20–30%.
  • ⚡ Use only original chargers.
  • 🔋 Once every 3 months, perform a full discharge/charge cycle to calibrate the battery.

2. Temperature control

  • 🌡️ Regularly clean the ventilation holes from dust.
  • 🖥️ Do not use the laptop on soft surfaces (blanket, sofa) - this will block cooling.
  • 🧊 Use cooling pads for gaming laptops.

3. Protection from liquid and shock

  • ☕ Don't put drinks next to your laptop.
  • 🛡️ Use a case for transportation.
  • 🚫 Avoid sharp impacts and falls.

4. Regular diagnostics

Once every six months, check the battery condition using utilities (Battery Care, AccuBattery) and inspect the body for deformations. If the laptop becomes less capable of holding a charge or heating up, contact service before visible problems appear.

💡

If you rarely use your laptop, store it with about 50% battery charge. A completely discharged or 100% charged battery degrades faster.

Is it possible to replace a swollen battery yourself?

Replacing the battery in a laptop is a task of varying complexity, depending on the model. Let's consider the nuances:

Removable batteries (for example, in Lenovo ThinkPad, Dell Latitude)

If the battery is secured with latches, you can replace it yourself:

  1. Turn off the laptop and disconnect the power.
  2. Turn it over and slide the battery latches.
  3. Remove the old battery and install the new one (make sure the model is compatible!).
  4. Turn on the laptop and check the charge.

Soldered batteries (for example, in MacBook, HP Spectre, ASUS ZenBook)

In this case, replacement requires disassembling the case, disconnecting the cables and soldering (in some models). It is not recommended to do this yourself, because:

  • Risk of damage to touchpad or keyboard cables.
  • You can break the seal of the case (relevant for MacBook with adhesive fastening).
  • Incorrect installation may result in a short circuit.

If you still decide to replace it yourself, use plastic picks to open the case (not a knife!) and watch the cables. It’s better to watch a disassembly of your model on YouTube in advance.

💡

Even if you successfully replaced the battery yourself, check its operation within a week. If the laptop begins to discharge or heat up faster, contact service - the power controller may be faulty.

Frequently asked questions about laptop swelling

Is it possible to use a laptop if it is swollen but still works?

No! A swollen battery is fire danger. Even if the laptop turns on, internal components may be damaged. In addition, the risk of a short circuit increases when connected to the network. It is better to immediately turn off the device and contact service.

How much does it cost to replace a battery at a service center?

The cost depends on the laptop model and battery type:

  • Budget laptops (Acer, Lenovo IdeaPad): 3 000–6 000 ₽.
  • Middle class (HP Pavilion, Dell Inspiron): 6 000–10 000 ₽.
  • Premium and gaming (MacBook Pro, ASUS ROG): 10 000–20 000 ₽.
  • Ultrabooks with adhesive casing (MacBook Air, Dell XPS): 15,000–25,000 ₽ (including disassembly).

In official services (Apple Store, Lenovo Service) the price is higher, but you get a guarantee on the work.

What to do if the laptop is swollen due to liquid ingress?

If the bloating is caused by fluid, proceed as follows:

  1. Immediately turn off the laptop and disconnect the battery (if possible).
  2. Dry it in an upright position for 24–48 hours (you can use a fan at minimum speed).
  3. Do not turn on the device until you are sure it is completely dry.
  4. Contact a service to clean the board from corrosion (even if the laptop is working, oxidation may appear later).

If the liquid was sweet (tea, soda), the risk of corrosion is higher - be sure to wash the board with alcohol in the service center.

Can a new laptop swell?

Yes, even a new laptop can swell if:

  • Was factory defective battery (found in HP, Acer).
  • The laptop was stored in a warehouse under improper conditions (for example, high temperature).
  • Are you using non-original charger, which gives the wrong voltage.
  • The laptop was subjected to mechanical impact (blow, squeezing) even before purchase.

If the laptop becomes swollen during the warranty period, contact the store or service center for a replacement under warranty.

How to check if your MacBook battery is swollen?

B MacBook The battery is soldered in, so the swelling is more difficult to notice visually. Look out for the following signs:

  • The housing in the touchpad area has become convex (especially for models MacBook Pro 2016–2019).
  • Touchpad fails or clicks with difficulty.
  • In the "Battery Status" menu (About This Mac → System Report → Power) the status is indicated "Serve" or "Replace now".
  • MacBook suddenly turns off, even if the charge is not zero.

For accurate diagnosis, you can use the utility coconutBattery — if the actual capacity drops below 80% of the nominal, it’s time to change the battery.