TheLenovo ThinkPad T16 Gen 3 laptop battery is located under the palm rest. When the battery cells age and produce gas, they expand, often pushing up the touchpad and keyboard surface first. Bulging isn’t just a matter of casing deformation; in severe cases, it can compress the internal structure and even pose a short circuit and fire risk. If you see the following three signs, it’s recommended to stop using the laptop and check it immediately.
Signal 1: Touchpad warps, becomes harder or uneven when pressed. A normal touchpad should be completely flush with the palm rest, with consistent pressure at all four corners. Gently run your finger along the edge of the touchpad. If you find that one side is significantly higher than the surrounding area, or if one side is harder than the other when pressed, or even if it makes a slight “clicking” sound, it indicates that theLenovo ThinkPad T16 Gen 3 laptop batterymay have swelled and is exerting upward pressure. This is one of the most obvious and earliest signs of bulging in the T16 Gen 3.
Signal 2: Keyboard surface slightly arched, keys feel “dull”. Close the laptop and observe the gap between the keyboard and the bottom cover from the side. Check if it’s wider at the top and narrower at the bottom, or uneven from side to side. After opening, gently tap the keyboard area. If some keys have a sluggish, dull response instead of the original crisp tactile feedback, it indicates that the support structure under the keyboard may have been deformed by the expansion of theLenovo ThinkPad T16 Gen 3 laptop battery
Signal 3: The laptop wobbles when placed on a level surface, and the bottom cover seams are uneven. Place the T16 Gen 3 on a flat glass surface or table, without pressing any part, and observe if it wobbles slightly like a seesaw. Excluding the possibility of detached feet, wobbling usually means the bottom cover has been pushed downwards by the battery. Also check the connection between the bottom cover and the palm rest; if the originally tight clips are partially open, be wary.
Take action if any of these signs are found: Immediately shut down the laptop, unplug the power adapter, do not press on the bulging area to try to “press it back in,” and do not continue charging. Contact Lenovo after-sales service or a professional repair shop to replace the Lenovo ThinkPad T16 Gen 3 laptop batteryof your Lenovo ThinkPad T16 Gen 3 laptop. The T16 Gen 3 uses an L22X4PE1 internal battery, which requires removing the bottom cover; it is not recommended to attempt to replace it yourself.
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