Powerpedro
Posts: 1
Joined: Fri Nov 08, 2019 3:38 am
Delivery Date: 08 Nov 2019

Extra Load on battery

Fri Nov 08, 2019 6:21 am

Hi there, I would like to connect an extra load to the battery that will be draining current while driving and also while standing and locked car. How can i activate the rely while standing and do you know if the BMS will raise an error if SOC is changing without usage of the drivetrain? Is there any other problem that i have to be aware of?
Many thanks

Oilpan4
Posts: 1379
Joined: Wed Jan 09, 2019 10:51 pm
Delivery Date: 10 May 2018
Leaf Number: 004270

Re: Extra Load on battery

Fri Nov 08, 2019 9:14 am

When the car is off and not being charged. the main traction battery has 0v on the output leads, this is an active safety mechanism built into the battery system.
Last edited by Oilpan4 on Fri Nov 08, 2019 12:58 pm, edited 1 time in total.
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WetEV
Posts: 3632
Joined: Fri May 04, 2012 8:25 am
Delivery Date: 16 Feb 2014
Location: Near Seattle, WA

Re: Extra Load on battery

Fri Nov 08, 2019 10:00 am

Powerpedro wrote:
Fri Nov 08, 2019 6:21 am
Hi there, I would like to connect an extra load to the battery that will be draining current while driving and also while standing and locked car. How can i activate the rely while standing and do you know if the BMS will raise an error if SOC is changing without usage of the drivetrain? Is there any other problem that i have to be aware of?
Many thanks
Which battery? How much load? How long?

The traction battery is disconnected unless the car is charging or in ready mode. You can lock the car in ready mode.
WetEV
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DaveinOlyWA
Posts: 14687
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Nov 2019
Leaf Number: 319862
Location: Olympia, WA
Contact: Website

Re: Extra Load on battery

Fri Nov 08, 2019 11:30 am

Powerpedro wrote:
Fri Nov 08, 2019 6:21 am
Hi there, I would like to connect an extra load to the battery that will be draining current while driving and also while standing and locked car. How can i activate the rely while standing and do you know if the BMS will raise an error if SOC is changing without usage of the drivetrain? Is there any other problem that i have to be aware of?
Many thanks
What load? Simply leave the car on. I would make sure you lock the doors though. And no I don't recommend whatever it is you are thinking you can do.
2011 SL; 44,598 mi, 87% SOH. 2013 S; 44,840 mi, 91% SOH. 2016 S30; 29,413 mi, 99% SOH. 2018 S; 25,185 mi, SOH 92.23%. 2019 S Plus; 7059.6 mi, 95.35% SOH
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