Leaving the Gravity plugged in all the time

[Alt425]

Is there a best practice regarding leaving the car plugged all the time (specifically the mobile charger running 120/15A)? While I'm pretty sure it can't hurt, does it help in some way?

For example, the Tesla M3's 12V battery (I'm 2018 so non-Lithium) may need to be replaced more frequently if the car is not connected to a charger (no hard data, but anecdotally seems true). Is this the same for the Gravity? Once it reaches full charge, it appears to not draw current from the mobile connector (?). At this point, I assume the HV battery is dormant and the two 12V batteries are running the car. I'd hope that the car acts like a battery tender to the 12V system when it is plugged in.

 

[Saksak]

Leaving car plugged in all the time is fine. What matters is the charge range. Best is to keep the the car between 35% - 55%. There are also other best practices, repeating my post with minor changes:

Best practices that I’ve found:

- Use an EV rated NEMA 14-50 outlet as others have said. Don’t go cheap and risk overheating/melting/fire.
- Keeping the mobile charge plugged in all the time is fine. Unplugging when not in use is also fine to eliminate standby power. As others have mention, don’t use the breaker as a regular on/off switch.
- Although not strictly necessary, a permanent wall mounted charger is recommended for home charging. They give faster charging, are more efficient, and have smart features such as scheduled charging (typically better than the car), monitoring, and logging. This also allows the mobile charger to be kept permanently in the car for when you need it away from home.

For battery health:

- Charge daily. Many small charges are better than a single 0% - 100% charge.
- When possible, stay close to 50% between charges and charge within the “daily” range. Staying between 35%-55% is optimal. For example, plan for 40% - 60%, 30% - 70%, 20% - 80%, etc.
- Occasionally charging to 100% and depletion to 0% is fine for NMC (Lucid batteries) but minimize the time spent below 20% or above 80%. Drive soon after reaching 100%, and charge as quickly as you can near 0%, especially in hot climates.
- Practically speaking, you can ignore all of the above and charge/drive as you desire, and your battery will outlast the vehicle. Just avoid keeping the car at 100% charge or 0% charge for very long periods of time without driving/charging.