Gen 1 Vampire Drain (Possibly) Solved (or Hacked)

[godfodder0901]

As a matter of fact, this is why I'm monitoring this almost every morning consistently. If every day I see my battery at 13.x and then I start seeing it at 14.x every day, I will start assuming my 12V is being charged more often than before which might (possibly) indicate an aging battery.

Just remember (in case you haven't seen it from the posts above) my 12V batteries were replaced last month as I woke up to a bricked truck once

One thing I want to know is How many miles/months from the current behavior to a more-frequent charging behavior. That impacts VD heavily (I've seen 1% with motion guard enable and basically 0% at home with Motion disable and Bluetooth disabled in my phone as well).

That's a good thought, but I don't think your once-daily measurements will really get you the info you desire. Consider a real-time monitor (they are cheap and easy to use). If you would like some help with that, I'd be happy to lend a hand (I'm sure @tate16t would as well).

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[mudito]

That's a good thought, but I don't think your once-daily measurements will really get you the info you desire. Consider a real-time monitor (they are cheap and easy to use). If you would like some help with that, I'd be happy to lend a hand (I'm sure @tate16t would as well).

Yup, saw the posts about the Real-time monitors. I might do that in the future.

For now, I'm just tracking the Sleep/Wake events, and battery voltage at the same time (ish) every day. It seems like the ONLY time (so far) when I'm getting charge voltage is when my R1T is plugged in to a L2 Charger.

When I left it parked somewhere else for a week (work trip) I saw multiple sleep/wake events every 6-ish hours but I don't have 12V batt voltage data of those events, of course I'm attributing those wake events to MotionCam though

 

[NY_Rob]

Anyone who is not paying or subscribed for Connect+ now that the trial period is up feel like checking vampire drain?

I'm wondering if it will be lower now for non-subscribed owners since the vehicle shouldn't be sending gobs of data back to the mothership 24/7/365.

 

[mudito]

Anyone who is not paying or subscribed for Connect+ now that the trial period is up feel like checking vampire drain?

I'm wondering if it will be lower now for non-subscribed owners since the vehicle shouldn't be sending gobs of data back to the mothership 24/7/365.

Well... With Connect+ and connected to WiFi in my garage, I still get this overnight

(took this screenshot this morning)

So I don't think that might be a factor honestly

 

[Tim-in-CA]

My R1S is in service now to see if they can figure out the constant sleep/wake cycles that ends up draining my 12V battery. I had this issue approx 6 months ago, and they simply replaced the 12V battery. Hopefully, they can root cause this issue and I can get back to my "usual" 0.8-1% VD a day!!

 

[shrink]

Just a quick update. My (currently damaged) R1S has been sitting in my garage since the 1st week of 9/2024 with the battery charger attached, so about 50 days, my best guess is 47 or 48 days so far. I don't remember exactly.

The HV Battery has lost only 1% from 69% to 68%.

My 12V battery charger has used 13.541 kWh during this period.

I think the following settings are helping:
Shipping Mode: On
HVAC: Off
Bluetooth/Wi-Fi/Proximity Lock/: Off
Data Sharing: All OFF except for Location

I won't be back on island for another few weeks so I'll have about 2-1/2 months total of data in the end - and I'm really hoping the car will be heading for repairs next month!

 

[mudito]

Definitely 1% in that time is great. But 13kWh for the 12v its a lot! That would justify like 10% battery drain in a Large pack plus all the extra wattage for waking up all computers...

Great information!

 

[shrink]

Definitely 1% in that time is great. But 13kWh for the 12v its a lot! That would justify like 10% battery drain in a Large pack plus all the extra wattage for waking up all computers...

Great information!

It's about 0.3 kWh/day. I'll take it.

Looks like my unopened fridge in the same location is using about 1.7 kWh/day.

 

[chops]

since we're doing updates. i put my setup into production around september 1st on a smart plug that cycles every 4 hours (i found that my charger would see the battery as fully charged, then shutoff after an hour, and not turn back on) and it's used 19kWh.

51 days, 19kWh = 372 watts/day. not great, but better than losing 1-2kWh/day without the 12V charger!!!

 

[mudito]

Quick Update:
My R1T just woke up from sleep after 16hrs and 45 minutes. As a reminder. It has new 12V batteries that were replaced last month.

It's been awake for 1hr and 41mins (and counting) and lost 0.48kWh in this process, so I'm assuming it's topping off the 12V ;-)

 

[mudito]

Quick Update:
My R1T just woke up from sleep after 16hrs and 45 minutes. As a reminder. It has new 12V batteries that were replaced last month.

It's been awake for 1hr and 41mins (and counting) and lost 0.48kWh in this process, so I'm assuming it's topping off the 12V ;-)

Last night was the FIRST night since both of my 12V were replaced (mid September) that my R1T woke itself up at night for (presumably) a top-off:

Battery SoC at sleep = 53.3%
Battery SoC at wake = 52.9%

 

[CO-rayman]

Starting to wonder if this is the longest thread at 28 pages

In any case, thanks to all your input on this subject (and for @shrink who started this thread), I decided to install SAE connectors direct to my two 12V batteries. This approach allows me to directly trickle charge those batteries as well as test the batteries for health before bricking (using a device like this https://www.amazon.com/gp/product/B0017R5EQK/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1)

I tend to drive my R1T regularly and at most may let it sit for 4 days. In summary, with both 12V connected to 2 separate trickle chargers (4 Amp ones), I lose 0 miles and 0% SOC over the extended 4-day non-use.

I first tried using the OBDII port (per @JerseyGreens) since it would be easy, followed by just trickle charging the primary battery direct, and finally settled on trickle charging both batteries (per@NY_Rob).

Here is my log for losses over 4 days:

OBDII charging lost 2%, 7 miles
charging primary 12V lost 1%, 3 miles
charging both 12V lost 0%, 0 miles

My data is just for 4 days at a time since that is my maximum period for non-use. Also, I didn't track how much power the trickle chargers use, but they definitely don't stay on long and I am sure they won't make up for the huge percent losses from the high voltage battery.

I placed my SAE connectors at the two corners under the hood towards the windshield (per @ascientist).

 

[NY_Rob]

^ Nice to see your results Ray, the best method is far and away charging both batts in the Gen 1 vehicles.

Using that method, I lost 2 miles range over a 4 full day (96hrs) test run. For reference I was losing 2-3mi/day with no trickle charging.

 

[zgStevieD]

Probably a silly question but, will these trickle charge methods (specifically from solar) work through the bumper jump pigtails?
I'm looking at a 220W panel + controller and connecting there for long term parking. TIA

 

[mudito]

Probably a silly question but, will these trickle charge methods (specifically from solar) work through the bumper jump pigtails?
I'm looking at a 220W panel + controller and connecting there for long term parking. TIA

Great question, don't know the actual answer BUT I'm guessing it would not.

I'm just guessing it wouldn't based on the amount of power needed to jump the battery from the pigtails is greater than from the battery directly. There must be some type of circuitry that avoids a free flow of current to the 12V all the time.

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