I recall reading on this forum that the 12V battery will go low if the vehicle is not driven for an extended period of time. I am doing a family trip in a couple weeks and would like to know what battery tender brand are you using. TIA
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I recall reading on this forum that the 12V battery will go low if the vehicle is not driven for an extended period of time. I am doing a family trip in a couple weeks and would like to know what battery tender brand are you using. TIA
I use the Battery Tender Plus from the Deltran corp. on line from Amazon. Using it on our ML430 since it sits around a lot.
I recall reading on this forum that the 12V battery will go low if the vehicle is not driven for an extended period of time. I am doing a family trip in a couple weeks and would like to know what battery tender brand are you using. TIA
My understanding is that as long as the main battery pack has juice, the car will use the main battery pack to keep the 12v battery charged. This allows you to park the car unplugged for a week or two (for now, bearing in mind vampire losses until the vampire loss release comes out).
I recall reading on this forum that the 12V battery will go low if the vehicle is not driven for an extended period of time. I am doing a family trip in a couple weeks and would like to know what battery tender brand are you using. TIA
My understanding is that as long as the main battery pack has juice, the car will use the main battery pack to keep the 12v battery charged. This allows you to park the car unplugged for a week or two (for now, bearing in mind vampire losses until the vampire loss release comes out).
My understanding is slightly different from yours.I don't think so. I think that the 12 volt is not charged by the main battery unless the car is on. The 12 volt can be discharged if the car is not on for extended periods of time if the car is not on and not plugged in. Anyone know that not to be the case? The main pack is "isolated" from the 12 volt unless the car is on.
My understanding is slightly different from yours.
I'll try to nutshell it.
- Tesla firmware has some minimum voltage that it considers acceptable for the 12V.
- Tesla firmware has some minimum energy that it considers acceptable for the main battery pack.
- If the 12V is below its minimum and the main battery pack is above its minimum, the 12V is replenished from the main battery pack. The "On"/"Off" state of the car is irrelevant.
- If the main battery pack is below its minimum, it goes into self-protection mode and no longer cares about helping the 12V.
- If both batteries are below their minimum (and thus the 12V stays "stuck" below its minimum), things get... problematic but not immediately. Somewhere a bit below the "main to 12V" trickle minimum, the 17" becomes unresponsive. You can no longer open the charge port or put the car into neutral. The disabling of both of these features is a perfect storm of "screwed" because you're basically force to flatbed it "improperly".
- A jump pack (but ideally a stronger source like a running vehicle) can wake up the 12V long enough to get it to open the charge port and negotiate with a charging station so that it can wake itself back up fully.
My understanding is slightly different from yours.
I'll try to nutshell it.
- Tesla firmware has some minimum voltage that it considers acceptable for the 12V.
- Tesla firmware has some minimum energy that it considers acceptable for the main battery pack.
- If the 12V is below its minimum and the main battery pack is above its minimum, the 12V is replenished from the main battery pack. The "On"/"Off" state of the car is irrelevant.
- If the main battery pack is below its minimum, it goes into self-protection mode and no longer cares about helping the 12V.
- If both batteries are below their minimum (and thus the 12V stays "stuck" below its minimum), things get... problematic but not immediately. Somewhere a bit below the "main to 12V" trickle minimum, the 17" becomes unresponsive. You can no longer open the charge port or put the car into neutral. The disabling of both of these features is a perfect storm of "screwed" because you're basically force to flatbed it "improperly".
- A jump pack (but ideally a stronger source like a running vehicle) can wake up the 12V long enough to get it to open the charge port and negotiate with a charging station so that it can wake itself back up fully.