These people often have tingling and numbness in the feet as well. Many people complain that their feet are overly sensitive to touch (hyperesthesia) and can have varying degrees of burning pain. It can range from mild to disabling. Diabetes and alcohol abuse are by far the most common causes of neuropathy in the legs.
Q: what cause macbook pro battery swelling? Apple battery packs contain a set of 6 lithium Ion (Li-Ion) cells (the metal covered envelopes), connectivity circuitry, and a small logic board. The main cause for battery cell swelling is what is known as thermal runaway. If a cell reaches a certain temperature then a chemical in the cell (usually Cobalt Oxide for Lithium Ion batteries) starts an unintended reaction which is exothermic in nature (i.e. it creates heat).
What causes corrosive build-up on the battery terminals, as seen in the picture, is a combination of hydrogen gas produced by the chemical reactions in the battery, and the dirt and sediment on the terminals. For this reason keeping a clean battery before corrosion occurs will help prevent the problem from starting. keeping grease or petroleum jelly on the terminals will prevent battery acid build up as well. Other car battery maintenance may include putting water in the cells when needed.