What happens if a battery is overcharged?
Overcharging means you keep charging even after the battery is already full.
Effects:
- Overheating
The battery temperature rises and damages internal parts.
- Water loss (for lead-acid batteries) Electrolyte starts to break into hydrogen and oxygen gas.
You may need to refill distilled water frequently.
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Gas buildup & explosion risk Hydrogen gas is highly explosive.
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Plate damage (lead-acid) Plates corrode makes battery capacity drops permanently.
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Shortened lifespan
Battery may fail much earlier than expected.