Vincent
Active Wheeler
- Joined
- Oct 16, 2024
- Messages
- 244
- Reaction score
- 26
- Rivian
- R1T
After doing lots of online research as well watching youtube videos I was able to solve phantom/vampire battery drain easily.
I got a 12 volt battery tender, and an OBD3 port adaptor off amazon and leave it plugged in while the car is at home.
Instead of losing nearly 1.5kwh a night, the tender draws 1.6kwh.
Photos show the setup in my garage, the drain before and after from ElectriFi and a screenshot of my smart plug that measures throughput.
(The TL;DR reason is folks have found is is the 12 volt battery is too small to keep the rivian asleep all night so it drains and dies, then the rivian wakes up and runs all its electronics and computers out of sleep mode to recharge the 12 volt for 3 hours.)





I got a 12 volt battery tender, and an OBD3 port adaptor off amazon and leave it plugged in while the car is at home.
Instead of losing nearly 1.5kwh a night, the tender draws 1.6kwh.
Photos show the setup in my garage, the drain before and after from ElectriFi and a screenshot of my smart plug that measures throughput.
(The TL;DR reason is folks have found is is the 12 volt battery is too small to keep the rivian asleep all night so it drains and dies, then the rivian wakes up and runs all its electronics and computers out of sleep mode to recharge the 12 volt for 3 hours.)




