The "80% rule" in electric vehicle (EV) charging refers to the common practice of stopping the charging process when the battery reaches 80% capacity, rather than waiting for it to reach 100%. This is done to:
1. Prolong battery lifespan: Avoiding high charge levels (above 80%) reduces stress on the battery cells, which can help extend their lifespan.
2. Reduce wear and tear: Charging to 100% can cause wear and tear on the battery, whereas stopping at 80% reduces the number of charge cycles.
3. Minimize degradation: Keeping the battery charge level between 20% and 80% can help minimize capacity loss over time.
4. Optimize charging speed: Stopping at 80% allows for faster charging, as the last 20% often takes longer to charge.
5. Balance range and longevity: The 80% rule balances the need for range with the desire to prolong battery life.
However, it's important to note that not all EV manufacturers recommend following the 80% rule. Some, like Tesla, suggest charging to 100% regularly, as their batteries are designed to handle it. Always consult your vehicle's owner's manual for specific guidance.
0