2021年7月22日 · A Power supply and a charger. The portable battery won’t charge the battery properly. But you might be able to plug a charger into a portable battery. Batteries charge at around 15-16V. Portable batteries output 12V. I don’t think you can charge through the emergency port. But here is a light weight solution of getting into the car.

2023年2月21日 · I have observed that the Tesla Model may perform some battery warming while Supercharging to improve the efficiency and speed of the Supercharging session. On a road trip Superchargers may be spaced 100 miles or more apart. This affords plenty of time for the Tesla Model Y to fully precondition the battery for next Supercharger charging session.

2019年10月23日 · So I'm keeping my Tesla charged to 90%, as recommended in the battery service manual. The cars aims to keep the delta-v - the difference in voltage between the lowest and highest brick to less to 5mv. The car can correct 1mv of imbalance every 24 hours. BTW - this information is from the Tesla Model 3 Theory of Operations document.

2021年7月20日 · This additional load on the 12V battery will require the battery be charged by the Tesla vehicle more frequently. When in Sleep Mode, consumption is normally 25W, you are basically tripling this load. If the 12V battery can normally maintain the Tesla's essential 12V systems for 24 hours between being charged then this would happen every ~8 hours.

2024年12月26日 · if you want the actual battery degradation to be a bit measurably lower, over an extended period of time, charge to 50-55% (but dont hesitate to charge higher when needed, even up to 100% as needed, as "100% hurts the battery" is another forum rumor as long as someone doesnt leave the car sitting for an extended period of time at 100%).

2022年7月5日 · Update so on my last response to this i charged & waited, it did go to 100% after waiting extra 40mins, the 2nd time I charged to do long journey its gone back to calculating again so it looks like any time i charge ill have to sit extra 40mins to hit 100% thats sucks… obviously on small journeys 95% but long journeys come on…

2021年11月6日 · I have a question as I ran into this few months ago.My model 3 just die out few miles before the supercharger.I got it towed to supercharger after a long delay and it was only two miles away.Is there a portable charger available with enough volts and amp to charge any Tesla car to give it enough power to drive few miles to the supercharger.I am ...

2020年1月6日 · Yes I realize that Elon tweeted 90% charging regularly, is fine. Im also aware of Tesla's "a happy Tesla is a plugged in tesla", motto. Also aware they recommend plugging in every night. But I've always thought that Lithium batteries typically have limited charge/discharge cycles before degradation starts to occur.

2016年5月3日 · Good info, thanks! I did use a trickle charger (that works fine on my other vehicle's 12V battery - 2004 Scion xB but it did not work to charge up the Model 3 12 V battery - even after 48 hours+ of having the trickle charger hooked up to the battery. So a true battery jump charge is likely needed.

2020年8月21日 · The battery charger wouldn't work on the 12v from the easy access terminals. I had to take apart the tesla to get to it. Easiest car I've ever worked on. Connected straight to the battery, the charger activated for all of a second before the main battery came back to life and the wall power started charging the 12v. Thank you all forfor the help!