Does Tesla Service drain battery when performing certain maintainence (battery replacement, contact replacement,???)? If so do they offload it into another battery pack or somehow pump it back into the grid?
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Does Tesla Service drain battery when performing certain maintainence (battery replacement, contact replacement,???)? If so do they offload it into another battery pack or somehow pump it back into the grid?
Does Tesla Service drain battery when performing certain maintainence (battery replacement, contact replacement,???)? If so do they offload it into another battery pack or somehow pump it back into the grid?
As confirmation, this is correct. I brought my car in for service and they surprised me with a "we're going to replace your contactors today!" notification. Unfortunately, the vehicle was fully-charged, and they ran the heater on full blast for something like 12 hours straight to bring the charge down low enough to perform the replacement. :frown: They pulled mine from 90% to 40%. They were still doing it that way as of about 6 months ago.Yes, to service the contactors and/or replace the battery they must bring the pack below a certain amount (I want to say 40% is what I recall).
Yes, to service the contactors and/or replace the battery they must bring the pack below a certain amount (I want to say 40% is what I recall).
Do we know why they need to discharge the pack to change the contactors? It's not like ~350V is really any safer than ~400V...Yes, to service the contactors and/or replace the battery they must bring the pack below a certain amount (I want to say 40% is what I recall).
From what I've heard they just run the heater for a while if they need to drain the pack.
Maybe less likely to start a fire if shorted at low SOC? As you stated, the wattage available even at 30% is still substantial. Even a minor safety increase might be deemed worthwhile (hey, it's not Tesla's heaters they're running hard): "Tesla catches fire at Tesla Service Center" would not be a great headline for them.Still not sure I understand how a battery at 360 V is any safer than one at 400 V. Even at less than 30% the pack is capable of outputting very dangerous levels of power.