What Causes Battery Cell Failure?
2 Answers
Battery cell failure is most likely due to poor battery quality, followed by incorrect usage methods, including prolonged deep discharge states and the use of high-power car chargers, which can all cause battery cell failure. Severe collisions or drops can also lead to broken connections inside the battery plates. Battery cell failure essentially means the connecting bridge between the internal plates has broken, causing the car battery to malfunction (insufficient voltage). Immediate action is required at this point, as it can significantly impact the entire vehicle. Repair method for battery cell failure: First, the problematic cell must be extracted, then a new plate is installed, sealed with adhesive, the terminals are welded, and electrolyte is added before charging.
Just helped my neighbor check this issue a couple of days ago. A broken battery cell essentially means the internal structure is shattered, like an eggshell cracking and leaking yolk. The most common cause is driving on rough roads where excessive vibration snaps the lead plates inside. Overcharging in summer is also problematic—excessive voltage can warp the electrode plates. Winter demands extra caution: if the battery charge is too low, the diluted electrolyte can freeze, and expanding ice can crack the casing. The sneakiest culprit is battery aging—after five or six years, internal corrosion weakens it so much that even a slight jolt can break it. Once broken, it's beyond repair. You'll notice erratic dashboard flickering when starting the car—don't hesitate, replace the battery immediately. Stalling mid-drive is far too dangerous.