Nvr2late

Have been reading here about losing settings when changing batteries. Purchased my 2019 new last summer with only single digits on the odometer and know for a fact that the car had been on the lot for some months. Since I am definitely technology challenged I hate the thought of resetting all the displays, etc. Read a post here that sounds like the right idea for me. It talked about plugging a power source into the cigarette lighter port in the trunk area. Someone mentioned a 9 volt battery for power. Have the "Corvette Battery Maintainer" which would not work. Searched a couple of auto parts websites and Amazon for such a gadget and came up empty. Can someone point me to a place to purchase this device since I know the battery store where I trade doesn't use one? Thinking that I will probably just get another year out of my battery and then replace it preemptively to avoid the hassle. Any other thoughts will be appreciated.

agapsdiver

Could attach a standard battery charger, not a trickle charger, to the front fuse box battery post before disconnecting battery.

Profit

Another year on a 2019 battery? It should last you at least 5+ years!

I just changed the original battery on my 2014 this year and use a trickle charger when the car sits for weeks/months. When I replaced the battery I didn't lose any settings it was disconnect for about 30 mins. Only the TPMS and Window Indexing need to be reset.

eboggs_jkvl

YOu won't lose squat with a battery swap. You will need to Re-index the windows.

Elmer

Red86Cfour

Keep in mind that if you do connect some type of memory maintainer while swapping the battery, which as posted above isn't necessary, the battery terminal will essentially be live and you will need to take care not to ground out the positive battery cable.

George_L

When I changed my battery the car was without power for about 20 minutes and I didn't lose anything and I didn't even have to index the windows.

MMD

Read about the CTEK's model 7002 smart charger. It is the best trickle/full charger in the world. Read about their "Supply Mode" of this charger on page 10. The is exactly what you are asking for. This charger is supplied with many of today's super cars.

https://cdn.shopify.com/s/files/1/01...07522301633849

C7LOU

My car sat all Winter (6 months) without the battery and all it needed was to index the windows!

MMD

You will shorten the life of the battery without using some sort of trickle charger. GM recommends trickle chargers if you don't use the vehicle for a few or more weeks. Read up on car battery desulphantaion in the link below. I think you will agree a smart charger is the way to go.

https://ricksfreeautorepairadvice.co...ery-sulfation/

Gearhead Jim

^^^
I'm the Grammar Police.


A trickle charger puts a small but constant charge into the battery, whether that charge is too much, just right, or not enough. There are better ways now.
As you said, a smart charger/tender/maintainer is the way to go. Any one of those will vary the charging current according to what the battery needs.

MMD

Well grandma police, I only mentioned a trickle charger to temper responses I would have received from many here who would have chimed in and mentioned they still use their grandpa's old trickle charger from back in the day. Ask me how I know this. Anyway, as you stated, a smart charger is the way to go and that is all I use exclusively on my vehicles.

Avanti

I've a power-maintainer with a 9-volt battery sold for that very purpose. I bought it years ago at a local parts store. I've used it many times with many vehicles... no problems.

It is a "NOCO Settings Keeper BTE296" and even came with the battery.

MMD

This looks comparable to your setup (newer version???).

https://no.co/gbc012

frankb

I did mine back a few mo. ago and never lost anything. I guess just lucky

bjones7131

I bought one off of EBAY last week and did the disconnect and reconnect battery on my truck and lost nothing. 17.00 bucks I believe. Neat item to have.

Kevin A Jones

In my opinion you are worrying unnecessarily as you should get 5 years out of your battery if taken care of even if it did sit on dealer lot for months. And when you do need to replace it should not have to do anything except re-index your windows.

eboggs_jkvl

The way I look at this car is to imagine you have a R/W CD in the car (you don't, but I did say imagine). When you select your settings, the information is written onto the CD. WHen you change your settings the information is rewritten on the CD to reflect your new settings. When you disconnect the battery, the information is not lost. When you hook up the new battery, the car reads the information off of the CD. Usually, the only thing you need do is re-index the windows. That takes maybe 10 seconds a window. Push the button down and lower the window to the bottom. Lift the button and when the window is back at the top, continue to hold up on the button for 3 mississippi's and then release the button. Do the same thing for the other window. Indexed. Drive and enjoy. You really don't need to try and keep a 12V on your system for a battery change but if it makes you feel better, have at it!


Elmer

Vetteman Jack

When the battery in my ‘14 was changed, no setting were lost.