Re: Using clone ELM327 Bluetooth OBDII adapter with Leaf
Posted: Tue Nov 11, 2014 10:51 pm
I don't know the spec for the Leaf's total dark current. I have designed and manufactured equipment for Ford. Their spec was "less than 1 mA for an *individual* component". A 1.2 AH draw per day for a single device is excessive. Take a battery that has aged and has perhaps 25% of its original capacity. It may go on working perfectly to start the car if the dark current is low. But drain 1 AH per day from it and it will not start the car in a few days.Turbo3 wrote:Dark current in the Leaf is spec'ed to be 50 ma or less from the 12v battery. So keeping an ELM plugged in with a 50ma draw at least doubles the dark current. So not a good idea to leave plugged in if you are not going to drive your Leaf for a while.
Not sure where you are getting the 100 times number from. Can you provide a link? Or is this just some general rule of thumb someone has come up with. But yes placing a device that which only increases dark current by 1% is better then using one that increases it by 100%.