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2026. 6. 30. 작업

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Portable jumpstart kits: why aren't regular car batteries this small?

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The two biggest disadvantage of lead acid batteries compared to the newer types like Li Ion are that they are heavier, and that they contain liquid acid. Another possible issue is that they can produce hydrogen gas. On the other hand, they are very inexpensive, have a long life expectancy, have a very high tolerance for overcharging without being damaged, and they hold a charge longer than other types. They are also able to handle high discharge rates. Here are some comparison charts Looking at the disadvantages, you can see that they're mostly irrelevant in a car. The weight of the battery is trivial compared to the weight of the rest of the components. Being able to stand long periods of slow charging without damage, and being able to sit unused for long periods of time without losing charge are ideal properties for a car battery. Being light weight and packing a lot of energy into a small package are just not that important for a car, but they're critical for portable devices, and t