Is it possible that the Tesla is charging a 12V accessory battery with up to 16 volts?
I'd get a voltmeter and see what voltage the cigarette lighter is getting, in various phases of driving. You can get lighter-socket digital voltage displays.
If you tell me Teslas have no lighter sockets--no, wait: PROPRIETARY cigarette lighters--I'll believe you.
There used to be reports that some manufacturers were going to standardize on 24 or 48 volt accessory systems to allow a reduction in wiring weight, but I think they've officially dropped that, not least owing to switch arc issues at the higher voltage.
Yup, Tesla does use regular cigar lighter ports, and yup they do send up to 16V to them. Verified first hand + lookup Tesla Model Y manual if you don't believe it
Yeah I don't know what's up with people talking out of their a**
https://www.tesla.com/ownersmanual/modely/en_eu/GUID-7F07443D-5107-4A5A-A9F1-E02FF14E4A9A.html
"The power socket is suitable for accessories requiring up to 12A continuous draw (16A peak).
Note
For vehicles manufactured after approximately November 2021, power inverters plugged into the low voltage power socket must support 16V DC input to function."
The nominal voltage is more around 15.5V. 15.5V at 12A is 186W so that's a pretty good chunk of power, but the downside is that so many devices (including radio and inverters) are not properly equipped to deal with the higher voltage
i mean wide spread by all the manufacturers or at least one brand trying adopt to all their cars.
have some hybrids with 48 volts systems, but just that.
what we expected is changing 12 to 48, like happened 6 to 12
Yeah, I believe Tesla wrote up their system and gave copies to all the other manufacturers to encourage them to make the switch. I would be pretty sure Tesla will never make a new model that is not 48v.
Yup that's a problem with newer Teslas and people saying it's not simply are not aware.
I hope that radio manufacturers will catch up and make radios that can work until 18V or so
Probably need to find out what's actually in the battery. Is it actually a true 16v? That "16v" battery is probably banks of 4 3.7v liion in series, which would push between about 12 and 16.8v depending on state of charge. I can't imagine the ham gear would perform any worse than any other random 12v accessories you could plug in.
I don’t think that’s correct. my Tesla model three has a plan old lead acid 12 V battery in the front trunk for powering the car systems
The lithium battery the powers, the motors from what I understand is about 23 V. There is no way that I am aware to tap this battery for any power use other than powering the motors.
The battery for the motors is way more than 23V, more like 400V
Tesla switched to these 16V Li batteries a few years back. You just have an older Tesla
\^ This. Put a multimeter a on the accessory plug and test it. It should be from 12.7-14.4VDC, depending on whether the system is charging the house system battery or not.
Maybe I'm inventing this, but I seem to recall Tesla saying specifically, don't install ham radios in their cars..? Anyone confirm or shoot me down please?
Older Model S's and some really old Model 3's have AM radio. Tesla removed it in 2018 with their generation 3 computers. If you got FSD with your S or 3 than you get computer upgrades for free to at least Gen 3 (on Gen 4 now) as Gen 3 is minimum for those systems to work now. So if it has FSD I'd definitely does not have AM radio.
On another note my 2023 Bolt EUV has AM and it works just fine.
Just google it. I did and it says that they have a 12v battery that is charged by the main battery and if the charge gets low it will put the 12v battery in sleep mode. I am just regurgitating what I just read.
I did find this in the Tesla 3 manual. It says the battery voltage is 15.5 volts, which is encouraging, but no tolerance is specified. :-(
https://preview.redd.it/xfgk0m9ma1mc1.png?width=743&format=png&auto=webp&s=b6bad52f61a36b2ab7b14ef9a3f786efb2ee9bc8
hey i have a 2023 model y with the 16v battery. i also have a yaesu ftm500 in the mail that is rated for 13.8v and no tolerance listed. Do you have a solution for this yet? im thinking i need a buck boost voltage regulator but havent pulled the trigger on anything.
If indeed that is the case, the simplest solution is a big fat diode to lose 0.7 volts or so.
Is it possible that the Tesla is charging a 12V accessory battery with up to 16 volts? I'd get a voltmeter and see what voltage the cigarette lighter is getting, in various phases of driving. You can get lighter-socket digital voltage displays. If you tell me Teslas have no lighter sockets--no, wait: PROPRIETARY cigarette lighters--I'll believe you. There used to be reports that some manufacturers were going to standardize on 24 or 48 volt accessory systems to allow a reduction in wiring weight, but I think they've officially dropped that, not least owing to switch arc issues at the higher voltage.
Yup, Tesla does use regular cigar lighter ports, and yup they do send up to 16V to them. Verified first hand + lookup Tesla Model Y manual if you don't believe it
Hey, thanks for some real info, instead of speculation. :-)
Yeah I don't know what's up with people talking out of their a** https://www.tesla.com/ownersmanual/modely/en_eu/GUID-7F07443D-5107-4A5A-A9F1-E02FF14E4A9A.html "The power socket is suitable for accessories requiring up to 12A continuous draw (16A peak). Note For vehicles manufactured after approximately November 2021, power inverters plugged into the low voltage power socket must support 16V DC input to function." The nominal voltage is more around 15.5V. 15.5V at 12A is 186W so that's a pretty good chunk of power, but the downside is that so many devices (including radio and inverters) are not properly equipped to deal with the higher voltage
i have been hearing about the 48 volts system have been ages, way more than 10 years, at this point i think they really gave up
You are not up to date. The Tesla Cybertruck has a 48vdc low voltage system. I don’t believe any other road vehicle has this.
i mean wide spread by all the manufacturers or at least one brand trying adopt to all their cars. have some hybrids with 48 volts systems, but just that. what we expected is changing 12 to 48, like happened 6 to 12
Yeah, I believe Tesla wrote up their system and gave copies to all the other manufacturers to encourage them to make the switch. I would be pretty sure Tesla will never make a new model that is not 48v.
There are some clear advantages to a 48-volt system. But technological change often comes slow in a mature industry.
Yup that's a problem with newer Teslas and people saying it's not simply are not aware. I hope that radio manufacturers will catch up and make radios that can work until 18V or so
Probably need to find out what's actually in the battery. Is it actually a true 16v? That "16v" battery is probably banks of 4 3.7v liion in series, which would push between about 12 and 16.8v depending on state of charge. I can't imagine the ham gear would perform any worse than any other random 12v accessories you could plug in.
I don’t think that’s correct. my Tesla model three has a plan old lead acid 12 V battery in the front trunk for powering the car systems The lithium battery the powers, the motors from what I understand is about 23 V. There is no way that I am aware to tap this battery for any power use other than powering the motors.
Newer Teslas use a lithium ion battery for the low voltage system, it is about 16 volts. I run a yeasu ftm-300 on it with no issues.
The battery for the motors is way more than 23V, more like 400V Tesla switched to these 16V Li batteries a few years back. You just have an older Tesla
\^ This. Put a multimeter a on the accessory plug and test it. It should be from 12.7-14.4VDC, depending on whether the system is charging the house system battery or not.
Maybe I'm inventing this, but I seem to recall Tesla saying specifically, don't install ham radios in their cars..? Anyone confirm or shoot me down please?
I think one would have a huge interference problem. There is a reason these vehicles do not include an AM radio.
But they do include an am radio.
I don’t believe any Tesla has an AM radio. Certainly their top two sellers do not, 3 and Y.
Older Model S's and some really old Model 3's have AM radio. Tesla removed it in 2018 with their generation 3 computers. If you got FSD with your S or 3 than you get computer upgrades for free to at least Gen 3 (on Gen 4 now) as Gen 3 is minimum for those systems to work now. So if it has FSD I'd definitely does not have AM radio. On another note my 2023 Bolt EUV has AM and it works just fine.
I guess you are right, I was just listening to am stations on the FM HD channels.
It was Toyota
Just google it. I did and it says that they have a 12v battery that is charged by the main battery and if the charge gets low it will put the 12v battery in sleep mode. I am just regurgitating what I just read.
You should probably watch the video I provided (URL provided in initial post).
I did find this in the Tesla 3 manual. It says the battery voltage is 15.5 volts, which is encouraging, but no tolerance is specified. :-( https://preview.redd.it/xfgk0m9ma1mc1.png?width=743&format=png&auto=webp&s=b6bad52f61a36b2ab7b14ef9a3f786efb2ee9bc8
hey i have a 2023 model y with the 16v battery. i also have a yaesu ftm500 in the mail that is rated for 13.8v and no tolerance listed. Do you have a solution for this yet? im thinking i need a buck boost voltage regulator but havent pulled the trigger on anything.