Where is the battery in a laptop: finding, removing and replacing the battery

Have you opened the laptop lid to replace the battery but can't see it? Or, on the contrary, you found a suspicious “box” with wires and are not sure that it is the battery? The problem is that manufacturers hide batteries in different ways: in some models they are removable (as in old Lenovo ThinkPad or Dell Latitude), in others - soldered into the body (as in most MacBook or ultrabooks ASUS ZenBook). Even if you have never disassembled a device, after reading this article you will be able to determine exactly where the battery is in your laptop and be able to safely remove it.

We will not limit ourselves to general phrases like “look under the lid.” Instead, let's figure it out specific layouts for different brands, we will show how to distinguish the battery from other components (for example, from CMOS batteries for BIOS), and we will explain why in some laptops the battery is “hidden” under the keyboard or even glued to the case. You will also learn what to do if the battery swollen - this is the only case when delay is dangerous for the device.

Removable vs. built-in battery: how to determine the type

Before looking for a battery, you need to understand is it removable or not?. This affects the difficulty of removal and even the cost of replacement. Here are the key signs:

• 🔋 Removable battery: usually visible from the outside on the bottom cover of the laptop, fixed with latches or screws. Often has a marker in the form of a battery icon or inscription Battery. Example: HP ProBook 450, Acer Aspire E15.
• 🔧 Built-in battery: hidden under the cover, can be screwed or glued. Found in thin laptops (ultrabooks) and MacBook. Example: Lenovo Yoga, Dell XPS 13.
• ⚠️ Hybrid option: The battery is removable, but access to it is blocked by the keyboard or bottom panel (for example, in MSI Modern 14).

How to quickly check the type without disassembling?

1. Turn the laptop over and inspect the bottom cover. If you see a compartment with latches, the battery is removable.
2. Look in the documentation (on the manufacturer’s website) section Specifications → Battery. If specified Removable - it can be removed without tools.
3. Enter your laptop model into the search engine with the request Is the battery removable or not?. Users often share photos of disassembled devices.

⚠️ Attention: If your laptop is thinner than 1.5 cm (for example, MacBook Air or Huawei MateBook X), with a 99% probability the battery is built-in and glued to the body. Trying to remove it without experience may damage the cables.

Where to look for the battery in laptops of different brands

Manufacturers place batteries in different ways. Below - typical schemes for popular brands (photo examples can be found on sites like iFixit or NotebookCheck).

Brand	Typical Battery Location	Mounting features	Examples of models
Lenovo	Under the removable cover or keyboard	Screws + connector. B ThinkPad often removable.	ThinkPad T480, Ideapad 330
HP	In a separate compartment (for business models) or under the entire bottom cover	Latches or screws. B Pavilion can be glued.	ProBook 455, Envy 13
Dell	Under the lid, often closer to the center	Screws + double-sided tape. B XPS soldered to the motherboard.	Latitude 7490, Inspiron 15
Apple	Under the bottom cover, occupies up to 70% of the area	Glued + star screws (pentalobe).	MacBook Pro 13" (2020), MacBook Air M1
ASUS/ACER	Under the lid, sometimes under the keyboard	Screws + plastic latches. B ROG maybe 2 batteries.	ZenBook UX330, Nitro 5

If your model is not in the table, use service iFixit (enter the model in the search) or watch the disassembly on YouTube. Please note: on gaming laptops (eg. MSI GE75 or Alienware m15) the battery can be moved to the back of the case for better cooling.

What to do if the battery is not found?

Sometimes the battery is hidden under:

- **Metal plate** (for example, in HP Spectre x360 — you need to unscrew 6 screws).

- **Keyboard** (in Lenovo Legion you will have to disconnect the cable).

- **Cooling system** (in ASUS TUF Gaming The battery may be under the radiator).

If you are not sure, don’t risk it: in 10% of cases the battery is integrated into the motherboard (as in some Chromebook).

Step-by-step instructions: how to remove the battery from a laptop

If you determine that the battery is removable or accessible after removing the cover, follow this algorithm. For built-in batteries Additional tools will be required (plastic spatulas, hair dryer to soften the glue).

Step 1: Power off.

Even if the laptop is turned off, there may still be voltage on the motherboard. To avoid short circuit:

1. Disconnect the power cable.
2. Press the power button for 10–15 seconds (discharges the capacitors).
3. If possible, remove CMOS battery (small round one on the motherboard) - this will reset the BIOS settings.

Step 2: Removing the cover.

• 🔩 For most laptops, the lid is secured with screws (most often Phillips #0 or Torx T5). B MacBook screws are used Pentalobe P5.
• 🕳️ Pry off the lid with a plastic spatula, starting from the corner. Be careful: in budget models (for example, Acer Aspire 3) plastic is fragile.
• ⚠️ If the lid does not budge, check that all the screws are unscrewed (sometimes they are hidden under the legs).

Step 3: Removing the battery.

It all depends on the type of fastening:

• 🔗 Connector: Gently pull the plastic “ear” (not the wires!). B Dell Latitude The connector can be secured with a latch - you need to bend it.
• 🧲 Glued Battery: Warm up the edge of the battery with a hairdryer (temperature no higher than 60°C), then pry it with a plastic card. B MacBook use special devices (for example, iFixit Battery Pull Tab).
• 🔧 Screws: Remove all screws holding the battery in place (they may be hidden under stickers).

⚠️ Attention: If the battery swollen (the laptop lid is raised, the keyboard is “playing”), do not try to remove it yourself! Risk of cable damage or even fire. Contact the service - they use special containers for transporting such batteries.

How to distinguish a battery from other components

Have you opened your laptop but are not sure which element is the battery? Here visual signs:

• 📦 Shape: A rectangular “box” of wires, often wrapped in foil or film. Size - from 1/3 to 2/3 of the area of the bottom cover.
• 🔌 Connector: Wide connector with 4–6 pins (sometimes labeled BAT or Battery).
• 📝 Marking: Sticker with parameters: voltage (11.1V, 7.4V), capacity (45Wh, 6000mAh), model (AP18C4K, 01AV419).
• ⚠️ Warnings: Inscriptions like Do not puncture or Risk of explosion.

What is not main battery:

• 🔋 CMOS battery: small round (“tablet”) on the motherboard. Responsible for the clock and BIOS settings.
• 🖥️ Capacitors: Cylindrical or barrel-shaped elements near the processor.
• 📡 Wi-Fi/Bluetooth module: A small board with antennas (usually near the cover).

If the battery has swollen areas (she looks "bloated"), this is a sign degradation of lithium-ion cells. Such a battery needs to be replaced soon - it can damage the screen or motherboard.

1. **Laptop models** (for example, HP 15-dw1070ur).

2. **Article number** (written on an old battery, for example HSTNN-LB7L).

3. **Capacities** (in Wh or mAh) - take no less than what you had.

Use services like BatteryFinder or official catalogs of manufacturers.-->

What to do if the battery is soldered or glued

In ultrabooks and premium models (for example, MacBook Pro, Dell XPS 15) battery often integrated into the body. This makes replacement difficult, but does not make it impossible. Here's what you need to know:

1. Glued battery.

Double-sided tape or special glue is used. To extract:

1. Heat the edge of the battery with a hairdryer (temperature 50–60°C) for 1–2 minutes.
2. Pry with a plastic spatula or guitar pick.
3. Pull slowly, without jerking - there may be cables under the battery.

2. Soldered battery.

Occurs rarely (for example, in some Chromebook or cheap Chinese models). You can't do without a soldering iron here. Algorithm:

• 🔥 Disconnect all wires from the battery (take a photo of their location!).
• 🔧 Carefully unsolder the contacts using solder and braid to remove excess tin.
• ⚠️ Test the new battery with a multimeter before soldering (the voltage should match the old one).

3. Battery under the keyboard.

In some models (for example, Lenovo Yoga C940) the battery is hidden under the keyboard. To get to it:

1. Remove the keyboard by disconnecting the cable (it is usually secured with a latch).
2. Remove the screws holding the battery (they may be under the stickers).
3. Disconnect the connector by pulling the plastic part (not the wires!).

⚠️ Attention: In laptops with aluminum body (For example, MacBook or Huawei MateBook) If you remove the battery carelessly, the case may be damaged. If you are not sure, contact a service center that uses special devices (for example, iFixit Jimmy for prying off components).

How to check the battery before replacing it

Before buying a new battery, make sure that this is the problem. Here 3 diagnostic methods:

1. Visual inspection.

• 🔍 Check if there is swelling (the battery must be flat).
• 🔌 Inspect the connector for oxidation or damage.
• 📉 If the battery capacity (on the sticker) is less than 30Wh, and the laptop works for less than 1 hour, it is worn out.

2. Software diagnostics.

Use utilities to check battery status:

• 🖥️ Windows: Launch a command prompt and enter:

  powercfg /batteryreport

  The report will be saved in C:\Users\Your_name\battery-report.html. Look for lines Design Capacity (initial capacity) and Full Charge Capacity (current). If the difference is more than 30%, the battery is worn out.

• 🍎 macOS: Press and hold the battery icon in the menu bar Option. If the status Replace Soon or Replace Now - needs replacement.
• 🐧 Linux: Install the package acpi and run the command:

  acpi -i

  Pay attention to the parameters last full capacity And design capacity.

3. Test with a multimeter.

If the battery is removable, you can measure its voltage:

1. Disconnect the battery from the laptop.
2. Set the multimeter to DC voltage measurement mode.
3. Connect the probes to the contacts + And − (usually they are signed).
4. Compare the readings with the rated voltage (indicated on the sticker). If the difference is more than 1V, the battery is faulty.

Common mistakes when replacing a battery and how to avoid them

Even experienced users sometimes make mistakes that lead to laptop damage or a new battery. Here are the most common:

• ⚡ Connecting the battery when the laptop is turned on. This may cause a short circuit. Always turn off the power and discharge static electricity (touch the metal body).
• 🔧 Use of unsuitable screws. The screws from the old battery may not fit the new one (for example, if you replaced the original battery with an analogue one). Store all fasteners in a separate box.
• 📦 Buying a battery without checking compatibility. Even if the laptop model is the same, the capacity or connector may be different. Always check the article number (P/N) on an old battery.
• 🔥 Ignoring bloating. If a new battery begins to swell after a few months, this is a sign poor quality charge controller or problems with the motherboard. Do not use this type of battery!
• 🔄 Failure to reset BIOS settings after replacement. Some laptops (eg. Lenovo) after replacing the battery, you need to reset the BIOS (remove CMOS battery for 10 seconds), otherwise the system will not “see” it.

Another typical problem is Laptop won't turn on after replacing battery. The reasons may be different:

• 🔌 The connector is not connected (check if it is tight).
• 🔋 The battery is completely discharged (connect the laptop to the network and wait 10-15 minutes).
• 🖥️ Protection against non-original components has worked (relevant for MacBook or Dell with digital signature verification).

FAQ: Answers to frequently asked questions

Is it possible to use a laptop without a battery, only from the mains?

Yes, but this not recommended for permanent work. Without battery:

• The laptop will become vulnerable to sudden power outages (risk of file or OS damage).
• Some models (eg Lenovo ThinkPad) can limit performance without battery.
• In case of a power surge the power supply may burn out (the battery partially smooths out the differences).

If the battery is completely damaged, it is better to buy a new one or use UPS (uninterruptible power supply).

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

The cost depends on the laptop model and battery type:

Laptop type	Battery cost (RUB)	Cost of work (rub.)	Total
Budget (for example, Acer Aspire 3)	1 500–3 000	500–1 000	2 000–4 000
Business class (eg Lenovo ThinkPad T490)	4 000–7 000	1 000–1 500	5 000–8 500
Gaming (for example, ASUS ROG Strix)	6 000–12 000	1 500–2 500	7 500–14 500
MacBook (eg. MacBook Pro 13" 2020)	8 000–15 000	3 000–5 000	11 000–20 000

Tip: Before replacing, check to see if the guarantee (even if the laptop was purchased a long time ago, some manufacturers provide a separate warranty for the battery).

How to extend the life of a new battery?

The service life of lithium-ion batteries is 300–500 charge cycles. To extend it:

• 🔋 Keep your charge level within range 20–80% (use utilities like Battery Limiter for Lenovo or MyASUS for ASUS).
• 🌡️ Avoid overheating (do not place the laptop on soft surfaces, clean it from dust once every 6 months).
• ⚡ Do not use “cheap” chargers - they can damage the battery controller.
• 🔄 Do it once a month full discharge-charge cycle (0–100%) to calibrate the controller.

B Windows 10/11 you can limit the maximum charge level: go to Settings → System → Power and Sleep → Advanced power settings → Configure power plan → Change advanced settings and find the item Battery Power Management.

What to do if after replacing the battery the laptop does not see it?

Possible causes and solutions:

1. Poor contact. Disconnect the battery and reconnect, making sure the connector clicks into place.
2. Incompatible battery. Check the article number (P/N) - even visually identical batteries can differ in voltage.
3. Reset BIOS. Take out CMOS battery for 10 minutes or reset the settings in the BIOS (option Load Default Settings).
4. Problem with the controller. Some laptops (eg. HP EliteBook) you need to “flash” a new battery through the service software.

If all else fails, contact service - the problem may be power circuit on the motherboard.

Can I replace the battery in a MacBook myself?

Technically yes, but there are some nuances:

• ⚠️ In models 2018 and newer Apple uses controllers tied to the motherboard. After replacement, the battery may not charge without flashing through Apple Configurator (available only in authorized services).
• 🔧 Special tools required: screwdriver Pentalobe P5, plastic spatulas, device for detaching adhesive strips (iFixit Battery Adhesive Strips).
• 💰 The cost of the original battery for MacBook Pro 16" - up to 20,000 rubles, analogue - 8,000–12,000 rubles. (but the risk of incompatibility is higher).

If you have MacBook 2015 or older, replace the battery yourself is real (there are guides on iFixit). For new models it is better to contact Apple Store or certified service.