baustin wrote:The steps are essentially the same as any other car. The only suggested differences are to remove any devices from the OBD port and give it about 15 minutes for everything to turn off, after parking the car, opening the hood, and closing the doors. Disconnect the negative terminal, then the positive, swap and tighten down the new battery, connect the positive terminal, then the negative, and test for proper operation.
The only tools that should be needed are a socket set, an open end wrench, and a flat blade screwdriver. The only additional parts that may be needed are anti-corrosion pads or gel. If everything is in good shape, and nothing has been (or gets) broken, it should be a quick and easy job.
Safety concerns are minimal, since there are no explosive vapors under the Leaf hood. Be wary of the hood support, and don't jump or drop anything if it sparks when connecting the terminals. Disconnect the negative terminal first, and reconnect it last, so there is no danger of creating a short between the positive terminal and the metal car components. Also, do something to prevent the positive cable end from making direct contact with the metal body components while swapping the battery.
When my battery finally dies, I plan to replace it with an Optima Yellow Top. If no one else has done it by then, I'll make a video of the process.
Remove devices from the OBD port? Concern about bad data, shorting the device?
15 minutes for everything to turn off? What's the concern there? Won't everything power down as soon as you pull the negative cable?
I got a an Optima Yellow Top so I'll try and take some notes and see if I can't edit up something. Then we can add video later.
Since having a device connected to the OBD port can keep some Leaf systems active, removing it is just to get things to an idle state sooner. There is also the remote possibility of a power surge, when reconnecting the battery, that could damage whatever is attached to the OBD port.
Like so many modern vehicles, turning the Leaf off does not immediately power down all systems. I don't know all the background processes that take place, and prefer to err on the side of caution. Thus, the suggestion for the 15 minute waiting period.
Everything will immediately power down when the battery cables are disconnected. The Leaf is a computerized vehicle, and I'm sure Nissan has engineered it to accommodate power-loss incidents. I have an IT background, and believe in doing an orderly shutdown, whenever possible.
Just to clarify, the Leaf uses a Group 51R battery. D51R is the Optima designation for their yellow top battery model that fits the Group 51R specification.