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How to break a Tesla battery?

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I know this will be controversial but I have to find out. I have a 2015 S 85 and the battery has degraded by more than 35%. Tesla refuses to replace the battery after a lot of back and forth and escalation. My warranty is ending in early January. I hear about a lot of 2015 batteries failing and being replaced. How do I hasten this process so I can get my poorly performing battery replaced under warranty?
 
I know this will be controversial but I have to find out. I have a 2015 S 85 and the battery has degraded by more than 35%. Tesla refuses to replace the battery after a lot of back and forth and escalation. My warranty is ending in early January. I hear about a lot of 2015 batteries failing and being replaced. How do I hasten this process so I can get my poorly performing battery replaced under warranty?

How many rated miles does it show at 100%?
 
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I know this will be controversial but I have to find out. I have a 2015 S 85 and the battery has degraded by more than 35%. Tesla refuses to replace the battery after a lot of back and forth and escalation. My warranty is ending in early January. I hear about a lot of 2015 batteries failing and being replaced. How do I hasten this process so I can get my poorly performing battery replaced under warranty?
Please describe how you measured this “more than 35%” degradation. I’d be very surprised if your rated miles displayed at 100% charge is actually 35% off from new.

Other than that, the right answers have already been given. Supercharge frequently. Always charge to 100% and run it down low. Keep the car from sleeping so it can’t balance the pack.