How do I know if the battery or charger is bad?
The symptoms can overlap, so the charger, charging behaviour and battery condition should be considered together.
WEAK, SWOLLEN OR FAILING BATTERY
Laptop battery replacement in Montréal
A laptop that runs only a few minutes on battery, shuts down unexpectedly or no longer charges normally may need a battery replacement—but charging problems can also come from the adapter, charging port or internal power circuitry. We check the likely cause before ordering a battery.
Signs a laptop battery may be failing
Typical battery symptoms include rapidly falling charge percentage, very short unplugged runtime, unexpected shutdowns, a battery percentage that gets stuck, Windows reporting that the battery should be serviced, or a battery that no longer charges to its previous capacity. Battery wear is normal over time, but sudden behaviour changes can also point to another problem.
A visibly swollen battery should be treated carefully. Stop pressing on the case or trackpad and avoid continuing to charge a battery that is physically expanding. The device should be powered down and inspected rather than forced back into shape.
Correct replacement by model
Laptop batteries vary by voltage, connector, physical shape, capacity and internal electronics. The exact laptop model and current battery part number are useful for checking compatibility. For laptops with internal batteries, the bottom cover must be opened safely and the battery disconnected before replacement.
Battery price and availability vary widely, so replacement is quoted by model rather than advertised as one fixed price. If charging symptoms remain after a known-good battery is installed, the charger, port or motherboard power circuit may need further diagnosis.
Laptop support across Montréal
Laptop Clinic serves customers in NDG and across Greater Montréal. You can use the booking form to send the brand, model and symptoms before the visit. If the laptop also has charging-port damage, see laptop charging-port repair Montréal. For general hardware problems, see laptop repair Montréal.
Frequently asked questions
Can you replace an internal battery?
Yes, on suitable models. Compatibility and safe access depend on the laptop design.
Is a swollen battery dangerous?
A swollen lithium battery should not be squeezed, punctured or kept under pressure. Power the device down and have it inspected.