The modern mobile device market dictates its own strict rules, and one of the main trends in recent years has been the abandonment of removable batteries. Engineers strive to maximize the tightness of the case and increase the usable volume to accommodate more capacious cells, which makes the question of how to remove the battery from Android increasingly relevant for owners of older or budget models. If you are faced with the need to replace a battery, it is important to understand that the approach is radically different depending on the design of your gadget.
Incorrect actions during dismantling can lead to irreversible consequences, including damage to the cables, screen, or even fire of a damaged lithium-ion cell. In this article, we will analyze in detail the algorithms of action for various types of cases, the necessary tools and precautions that will help you safely remove the power source. Security This is the first thing you need to think about before picking up a screwdriver or suction cup.
Before you begin physical intervention, you need to accurately determine the type of construction of your device. Most modern smartphones fall into two main categories: devices with a removable back cover and all-in-one models that require disassembly. Understanding this difference will save you time and nerves, and will also protect you from breaking the mounts.
Determining the type of smartphone design
The first step in the battery removal process is a visual and tactile inspection of the device case. You need to carefully examine the perimeter of the smartphone for visible screws, technological holes or characteristic recesses for opening the cover. If there are no screws at the ends, and the back panel has a barely noticeable joint around the entire perimeter, most likely you have monoblockwhich will require heating and the use of special tools.
If you find a small notch in the lower corner of the back panel or on the side, you are in luck - this is a classic smartphone with a removable cover. Such models are often found in the budget segment or among rugged workers phones designed for use in difficult conditions. To open such covers, no tool is required, except perhaps a fingernail or a thin plastic card.
⚠️ Warning: Never try to forcefully remove the back cover unless you are sure of its type. Applying excessive force to a monoblock case without preheating the glue is guaranteed to lead to cracks in the glass or destruction of the plastic latches.
It is also worth paying attention to the presence of the manufacturer's logo on the back panel. Often (but not always) brands like Samsung, LG or Motorola in budget lines leave the ability to quickly replace the battery, while the flagship lines of almost all manufacturers are now sealed. If you cannot find information about your model on the Internet, inspect the battery through the screen, if it allows, or look for the model number on the box.
Necessary tools for safe disassembly
If your smartphone falls into the category of devices that require disassembly, preparing your workspace and tools plays a critical role. Chaotically searching for screwdrivers while working can lead to the loss of small screws or damage to internal components by the sharp edges of the tools. For high-quality work, you will need a minimal but specific set.
The main tool will be a set of precision screwdrivers, including Phillips bits of sizes PH000 and PH00, as well as flat slots. In addition, a plastic spatula (mediator) for snapping off cables and clips will be an indispensable assistant, since metal can damage the insulation of wires or leave scratches on the board.
- 🔧 A set of precision screwdrivers (Phillips and flat) for unscrewing the housing screws.
- 🔥 Hair dryer or heating pad for softening adhesive layer under the back panel of monoblocks.
- 💳 Plastic card or mediator for carefully opening the case without damage.
- 🧲 Magnetic mat or organizer for sorting screws of different sizes.
Special attention should be paid to the heat source. The use of open flame, such as a lighter, is strictly prohibited, as this can damage the screen or melt the plastic elements of the case. It is best to use a special heat gun with temperature control or, as a last resort, household appliances like an iron (through a cloth) or heating pad, although they are less effective.
☑️ Checking readiness for disassembly
Instructions: removing the battery with a removable cover
For owners of devices with a classic design, the process of removing the battery takes a matter of seconds and does not require special skills. However, even here there are some nuances, ignoring which can lead to damage to the contacts or the battery itself. First, make sure that the device is turned offto avoid a short circuit when accidentally touching the contacts with your fingers or a tool.
Locate the notch for opening the back cover, which is usually located in the lower corner of the case or on the side. Insert your fingernail or the edge of a plastic card into the gap and gently but firmly pull the cover up and away from the notch. Don't be afraid to apply moderate force, the plastic latches are designed to open multiple times, but avoid jerking that can break the fasteners.
After removing the cover, the battery will open in front of you. Please note that in some models it may be covered with an additional plastic cover or have a locking tab. If the battery is tight, try gently prying it by the edge with a plastic spatula or fingernail, but never use metal objects that can pierce the cell shell.
⚠️ Attention: If you see the battery swelling (it has become thicker, sticking out of the socket), do not press on it or try to pierce it. Remove it as carefully as possible, as damage to the swollen battery may cause a chemical reaction or fire.
When removing, try to hold the battery horizontally so as not to damage the contact group. If the contacts are dirty, they can be carefully wiped with a dry lint-free cloth or a cotton swab slightly moistened with alcohol, but only after completely removing the battery from the device.
Disassembly technology for all-in-one smartphones
Owners of modern flagships and many mid-segment devices will have to face a more complex procedure. All-in-one smartphones are assembled at the factory using adhesives that ensure tightness and rigidity of the structure. To remove the battery from such an Android smartphone, the case must be preheated.
Turn on the hair dryer at medium temperature and evenly heat the perimeter of the back panel for 2-3 minutes. Hold the hair dryer 3-5 cm from the surface and constantly move it so as not to overheat one point. Periodically check the softness of the glue by trying to slightly move the spatula into the gap between the screen and the frame.
As soon as the glue softens, insert a plastic card or pick into the resulting gap and move the tool along the perimeter, cutting the adhesive layer. Move slowly, without plunging the tool deeper than 3-4 mm, so as not to damage the cables that may pass under the frame, or the battery itself, which is often glued to the inside of the cover.
What to do if the cover does not open?
If the cover does not budge after 5 minutes of heating, a particularly resistant adhesive may be used. Try adding a little more heat, but be careful with OLED screens, which are sensitive to overheating. In rare cases, you may need to use a special liquid to dissolve the glue (B-7000), but this requires pinpoint precision.
After successfully removing the back panel (or screen, depending on the model), you will have access to the insides. Often the battery is additionally secured with double-sided tape or pressed with a metal plate, which, in turn, is screwed on. Carefully unscrew all visible screws holding the protective screens and remove them.
The process of removing the glued battery
The most crucial moment is separating the battery from the case. In modern smartphones, manufacturers use a powerful adhesive layer to prevent the battery from moving and improve heat dissipation. You can’t just “take it out”; you will need to use force and chemical solvents.
Apply a small amount of isopropyl alcohol or a special adhesive solvent around the perimeter of the battery using a syringe or a thin brush. Allow the liquid 1-2 minutes to penetrate under the adhesive layer. Then use a plastic card to carefully “saw” the adhesive layer while slightly lifting the battery.
Do not bend the battery under any circumstances or try to pry it off by the center. Lithium polymer cells are extremely sensitive to deformation, and any puncture of the shell will result in instantaneous ignition. Move from the edges to the center, gradually freeing up the adhesion area.
Use dental floss or a thin guitar string to “saw” the glue under the battery. This is safer than using spatulas, since the thread is gentler and has less risk of damaging the battery shell.
When the battery is separated, remove it from the case, holding it by the edges. If there is a cable connected to the battery, make sure that the connector is disconnected from the motherboard. To do this, connectors often have a locking lock that must be bent upward before removal.
Battery compatibility and characteristics table
When replacing a battery, it is critical to choose the right model. Using an incompatible battery may cause the power controller to malfunction, quickly discharge, or even damage your smartphone. Below is a table with examples of popular models and their battery types.
| Smartphone model | Design type | Capacity (mAh) | Mounting features |
|---|---|---|---|
| Samsung Galaxy A10 | Removable cover | 3400 | Fixation with latches |
| Xiaomi Redmi Note 8 | Monoblock | 4000 | Double-sided tape |
| Google Pixel 4 | Monoblock | 2800 | Glue + plate screws |
| Nokia 105 (2019) | Removable cover | 800 | Simple insertion |
| OnePlus 6T | Monoblock | 3700 | Strong adhesive around the perimeter |
Pay attention not only to the container, but also to the overall dimensions and location of the contacts. Even if the battery physically fits into the compartment, misalignment of the contacts can result in a short circuit. Always check the battery model label (for example EB-BA105ABU) before purchasing a new one.
Always buy batteries only from trusted suppliers and check for holograms or QR codes to verify originality, as the market is oversaturated with fakes.
Frequent errors and precautions
In the process of disassembling and replacing the battery, beginners often make mistakes that can cost the device life. One of the most common mistakes is ignoring the disconnection of the battery cable before starting active work inside the case. Even if the phone is turned off, residual voltage may remain on the board, and accidentally shorting the contacts with a tool can damage the power controller.
Another common problem is damage to the display cables or buttons when opening the case carelessly. The cables in modern smartphones are very thin and fragile. When working with paddles and picks, always control the depth of immersion of the tool and try not to make sudden movements.
- 🚫 Do not use metal needles or knives to pry the battery - there is a high risk of breakdown and fire.
- 🚫 Do not leave the phone on charge immediately after replacing if you are not sure of the correct connection cable.
- 🚫 Do not throw the old battery into regular trash - take it to special recycling points.
⚠️ Attention: If during work you smell a strong chemical smell, see smoke or the battery gets very hot, immediately stop working, move away from the device and, if possible, place it in a non-flammable container with sand.
It is also worth remembering about static electricity. Before starting work, it is advisable to remove the static charge from yourself by touching a grounded metal object, or to work with antistatic gloves, especially if the air in the room is dry.
FAQ: Frequently asked questions
Is it possible to remove the battery without turning off the phone?
Absolutely not. Removing the battery while the device is on will cause an instantaneous power loss, which can corrupt the file system, cause data loss, or even cause a software crash that requires flashing. Always turn off the device before any manipulation.
What to do if the new battery does not charge?
Check the tightness of the connector to the board. Sometimes you need to press it a little harder until you hear a characteristic click. Also make sure that the protective film on the contacts of the new battery has been removed. If the problem persists, the battery may be defective or incompatible with your model.
How to properly dispose of an old battery?
Lithium-ion batteries contain toxic substances and should not be thrown into household waste. Place them in special containers for batteries, which are often installed in supermarkets, electronics stores or service centers.
The battery is swollen: can it still be used?
Using a swollen battery is dangerous. It may ignite or explode at any time, damaging the phone and causing injury. In addition, the swelling puts pressure on the screen, which can cause it to crack. Such a battery must be replaced immediately.
Does it need to be “boosted” by a new battery?
Modern lithium-polymer batteries do not require long-term “boosting” (three charge-discharge cycles of 12 hours each), like old nickel ones. One full charging cycle to 100% before the first turn on is enough to calibrate the controller.