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Lead-acid batteries can leak due to several reasons. Here's a simple breakdown of why this happens:
To prevent leaks, it's important to maintain your battery properly by not overcharging it, storing it in a cool, dry place, and regularly checking for signs of damage.
- Overcharging: If a lead-acid battery is overcharged, the internal pressure increases, which can cause the battery to swell. Eventually, this may lead to leaks as the casing can't hold the pressure anymore, and electrolyte (the liquid inside the battery) can escape.
- Old Age: Over time, the battery's seals and casing can degrade, especially if it's been exposed to harsh conditions. As the battery gets older, the likelihood of leaks increases because the materials holding the battery together weaken.
- Physical Damage: If a lead-acid battery is dropped or subjected to impact, the casing can crack or break, causing leaks. This is especially common in accidents or improper handling.
- Corrosion: The terminals of lead-acid batteries can corrode, especially if there's been a buildup of acid or moisture. This can create openings in the battery and lead to leaks.
- Improper Venting: Lead-acid batteries are designed with vents to release gases that are produced during charging. If these vents get blocked, the pressure inside the battery can build up, causing the battery to leak.
- Extreme Temperatures: Exposure to very high or low temperatures can affect the battery’s structure and lead to leakage. In hot conditions, the electrolyte may evaporate or the casing may expand, while in cold conditions, the battery might freeze and crack.
To prevent leaks, it's important to maintain your battery properly by not overcharging it, storing it in a cool, dry place, and regularly checking for signs of damage.