Lead acid is inefficient and short-lived. And when they go bad they can swell, crack, leak or even explode. If overcharged, they vent a perfect mix of hydrogen and oxygen that will ignite from any spark. If not kept near full charge they will go bad over time. Discharged batteries are frost-sensitive because the electrolyte is theb modtly water. And since they are not as finicky as Li-ion they are often charged by crude chargers and not closely monitored.
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Lead acid is inefficient and short-lived. And when they go bad they can swell, crack, leak or even explode. If overcharged, they vent a perfect mix of hydrogen and oxygen that will ignite from any spark. If not kept near full charge they will go bad over time. Discharged batteries are frost-sensitive because the electrolyte is theb modtly water. And since they are not as finicky as Li-ion they are often charged by crude chargers and not closely monitored.