Have you noticed that the laptop body has become uneven, the keyboard has risen, and the bottom cover is literally “breathing”? Most likely battery is swollen - a problem faced by device owners from Lenovo, HP, Dell and even MacBook. The Internet is full of advice to “just take out the battery,” but is it really safe?

Swelling of lithium-ion and lithium-polymer batteries is not uncommon, especially after 2-3 years of use. The reasons may be different: from banal wear and tear to factory defects or critical overheating. The main question that worries users: Is it possible to continue using the laptop?, if the battery is swollen, but still works? The answer is clear - no, and further we will explain why.

Why does a laptop battery swell: the main reasons

Lithium-ion batteries, which are used in 99% of modern laptops, are sensitive to operating conditions. Even ASUS ROG or Acer Predator With “premium” batteries there is a risk of swelling. Main reasons:

  • 🔋 Natural wear and tear: after 300–500 charge/discharge cycles, the capacity drops and internal chemical processes accelerate, leading to gas formation.
  • 🔥 Overheating: working on soft surfaces (sofa, bed), clogged cooling system or playing without a stand increases the battery temperature to critical levels 60–80°C.
  • ⚡ Incorrect charging: use of non-original power supplies (especially for MacBook), constant connection to the network “100%” or deep discharge up to 0%.
  • 🏭 Factory defect: cheap batteries from unknown manufacturers (often in budget models Acer or Lenovo IdeaPad) can swell even on a new laptop.

Interestingly, bloating is not always immediately noticeable. Sometimes the battery “swells” gradually, deforming the case, and sometimes within a few hours. For example, after a laptop crash or a sudden power surge. If you notice that the touchpad has become less sensitive or the keys fall through - this is an alarming sign.

📊 How often do you leave your laptop on charge overnight?
  • Always
  • Sometimes
  • Never
  • Charging turns off automatically

Is it dangerous to use a laptop with a swollen battery?

Lithium-ion batteries become a potential time bomb when they swell. Yes, they don’t explode like in the movies, but the risks are serious:

  • 💥 Fire: Mechanical damage (for example, if you press on a swollen battery) may cause thermal runaway - uncontrolled heating up to 300–500°C.
  • 🔌 Short circuit: Deformed battery cells can short out, which will lead to failure of the motherboard or power supply.
  • 💻 Laptop damage: a swollen battery puts pressure on the screen, keyboard and can even break the display hinges (relevant for HP Pavilion or Dell Inspiron).

The laptop power supply is usually protected from power surges, but a swollen battery is an unpredictable factor. For example, in 2020 Samsung recalled a batch of laptops Galaxy Book Ion precisely because of the risk of battery fire. And in 2016 Dell recalled 4 million batteries for Inspiron And Latitude for the same reason.

⚠️ Attention: If the battery not only swells, but also starts hiss, smoke or heat above 60°C - immediately turn off the laptop, unplug it and take it outside. Do not try to remove it yourself!
Sign Danger level Recommendations
Slight bloating (body raised by 1–2 mm) Average Replace battery within a week
Severe swelling (keyboard is deformed) High Immediately unplug the laptop and remove the battery (if possible)
The battery gets hot or smells burning Critical Do not use the device, contact service
Laptop won't turn on, battery is swollen High Do not try to charge, take it for repair

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

If you find swelling, follow the algorithm:

  1. Unplug your laptop and remove the charger. Do not use the device until the battery is replaced.
  2. Check if the battery is removable:
    • For older models (Dell Latitude E6400, HP EliteBook 8440p) the battery is removed from the back - unclip the latches.
    • In modern (MacBook Pro, Lenovo Yoga) the battery is soldered in - do not try to remove it yourself!
  • If the battery is removable:

    Turn off the laptop and remove the power cord|Turn the device over onto a flat surface|Wear gloves (in case of battery leakage)|Carefully release the latches and remove the battery|Place it in a non-flammable container (for example, a metal can)-->

  • If the battery is not removable - don't take risks! Contact the service center. For example, in Apple for battery replacement MacBook Air they charge from 5,000 to 15,000 rubles.

    • Important: even if the laptop is running on mains power without a battery, don't leave him unattended. A swollen battery can damage the contacts on the motherboard, and then repairs will cost many times more.

    💡

    If you are temporarily using a laptop without a battery, connect it via surge protector with surge protection — this will protect against failure of the power supply.

    Can I replace a swollen battery myself?

    Theoretically yes, but only if you have a removable battery and experience working with electronics. For non-removable batteries (as in MacBook or MSI Modern) you will need:

    • 🛠️ Special tool: plastic spatulas, screwdrivers Pentalobe (for Apple), suction cup for removing the screen.
    • 🔋 New battery: Buy only the original or a certified analogue (for example, for Lenovo ThinkPad will do Clevo or Green Cell).
    • 📏 Knowledge of device circuitry: in HP Spectre or Dell XPS The battery can be glued to the case - you will need a hair dryer to soften the glue.

    If you have never disassembled laptops, it is better not to risk it. Replacement errors can lead to:

    • Damage to display or keyboard cables.
    • Short circuit due to incorrect connection.
    • Loss of warranty (if the device is still under warranty).
    ⚠️ Attention: When purchasing a new battery, check it model number (For example, L14M4P21 for Lenovo or 020-000578-00 for MacBook Pro 13"). Counterfeits often swell within a month!
    How to check the originality of the battery?

    The original battery must have:

    1. Hologram with serial number.

    2. Date of production (not older than 1–2 years).

    3. The weight and dimensions correspond to the original (counterfeits are often lighter).

    4. Safety certification (such as UL, CE or RoHS).

    How much does it cost to replace a swollen battery?

    The cost depends on the laptop model and battery type. On average:

    Brand and model Battery type Cost (RUB) Difficulty of replacement
    MacBook Pro/Air (2015–2020) Soldered 8 000–20 000 High (requires plywood)
    Lenovo ThinkPad T480 Removable 3 000–6 000 Low
    HP Pavilion 15 Soldered 5 000–12 000 Average
    Dell XPS 13/15 Soldered 7 000–15 000 High (risk of screen damage)
    ASUS ROG Zephyrus Soldered 10 000–25 000 Very high (difficult to disassemble)

    At service centers Apple or Dell For battery replacement they can charge 2-3 times more than in third-party workshops. However, official centers have advantages:

    • 🔄 Labor warranty (usually 6-12 months).
    • 🛡️ Use of original spare parts.
    • 📋 Checking the power circuits after replacement.

    If your budget is limited, look for workshops with good reviews. For example, in Moscow and St. Petersburg, battery replacement in MacBook they do it for 5,000–8,000 rubles (with spare parts), and in the regions it’s 20–30% cheaper.

    💡

    Never buy a battery on AliExpress or Avito without checking! The risk of running into a fake or used battery with a remaining life of 10–20% is extremely high.

    How to extend the life of a new battery?

    To make your new battery last longer, follow these rules:

    • 🔌 Don't keep your laptop on charge all the time. Optimal level - 20–80%. For Windows You can set the charge limit via MyASUS (for ASUS) or Dell Power Manager.
    • 🌡️ Monitor the temperature. Use a cooling pad if you play or work with heavy programs (Photoshop, AutoCAD).
    • ⚡ Use original charger. Cheap analogues can produce unstable voltage, which accelerates battery degradation.
    • 🔄 Once a month, do a full discharge/charge cycle (0 to 100%) to calibrate the controller.

    For MacBook there is a useful function "Optimized battery charging" (Settings → Battery). It automatically limits the charge to 80% when connected to the network for a long time. On Windows-on laptops, a similar mode is enabled through proprietary utilities (for example, Lenovo Vantage).

    If you often work from the network, take out the battery (if it is removable) and store it while charging 40–50% in a cool place. This will slow down chemical processes and extend service life.

    What to do if the laptop is under warranty?

    If your laptop is still under warranty (usually 1–2 years), don't try to disassemble it yourself! Battery swelling is warranty case, but only if:

    • 📄 You did not damage the case (there are no signs of opening).
    • 🔌 We used the original charger.
    • 🔥 The battery was swollen without external reasons (there were no falls, no liquid filling).

    Algorithm of actions:

    1. Take a photo of the swollen battery and the laptop's serial number.
    2. Contact authorized service center (the list is on the manufacturer's website).
    3. If they refuse a guarantee, ask for a written refusal with a reason.

    In Russia, according to the law “On Protection of Consumer Rights”, you can demand:

    • 🔧 Free repair (battery replacement).
    • 💰 Refund or exchange for a new model if the defect is significant.

    The period for consideration of a claim is up to 45 days. If the manufacturer refuses, you can contact Rospotrebnadzor or court. For example, in 2021 the user MacBook Pro Through the court I obtained a battery replacement and compensation for moral damage.

    FAQ: Frequently asked questions about swollen batteries

    Is it possible to treat a swollen battery (puncture, flatten)?

    No! This is extremely dangerous. Puncture or mechanical impact may cause thermal runaway - the battery will catch fire or explode. The only way out is replacement.

    The laptop works without a battery - is this normal?

    Yes, but there are nuances:

    • Without a battery, the laptop will shut down at the slightest power surge.
    • Some models (Lenovo Legion, MSI GE75) may limit performance without a battery.
    • If you plan to use it for such a long time, connect it via a UPS (uninterruptible power supply).

    How long does it take to replace if the battery is swollen?

    If the swelling is mild (the body is raised by 1–2 mm), you have 1–2 weeks for replacement. If the battery is severely deformed or gets hot - turn off your laptop immediately and take it to service.

    Can a new battery swell?

    Yes, if:

    • This is a marriage (rare, but it happens even among Apple or Samsung).
    • You are using a non-original charger.
    • The laptop constantly overheats (for example, due to a clogged cooling system).

    What to do if the battery in a laptop that is not in use is swollen?

    Even if the laptop is lying idle, a swollen battery is dangerous! Take it out (if removable) and dispose of. You cannot store such batteries at home - they can catch fire. To recycle, go to electronics collection points (for example, Ecosystem or Samsung Recycling).