I have one in my wardrobe.. when you have a number of cars in a family its a handy thing to have.. of course the problem is we have to keep a spare battery for such an occasion and that might not be practical.. so now while we are on the subject of using a memory saver devise. I am wondering what's the lowest AH battery we could get away with as a donor battery ..Same here - when I needed a replacement battery a few days ago, the AA guy had a code retainer gizmo, which plugged into the diagnostic socket.
I think I would rather find 1 battery I can clip the crocodile clips on.. changing a battery on my car is a major faff and not a 5 minute job.. as it would be my first swap out of an AGM battery on these cars I dont want to make a major c0ck up in the process and would like plenty of time swapping it out.. thankfully I dont need to do it at the moment and I am driving my car at least twice a week around 20 to 30 mile to maintain it but just think of those that dont ..doesnt bare thinking about does it..Clamp together 8 AAA batteries to get 12V and that can hold the memory long enough to change main battery.
Thought of battery charger but then again for 2 reasons I ruled it out.. possible damage to electrical system and ECU and its been covered on the kia forum I am on and told to do it at your own risk because of possible damage to the ISG system .. negative sensor cable for this car is hundreds of pounds to buy.. so wont be going there.. one poster did it had a sensor go down and changed the cable.. but still could not delete the code for that when a light popped up.. even a dealer failed to turn this light off.. the car now has a permanent light on the dash with no solution on how to delete it.. latest post is he has part ex the car with an MOT just around the corner..That was just a statement, that 8 AAA battery pack can hold radio memory.
Of course it would be clumsy to have them firmly connected together as any other 12V source is better.
Long time ago I was trying to figure out how can I change battery without loosing code by using only 1 set of jumper cables, old and new battery. Gave up after 10 minutes and I used battery charger instead.
Clamped it to the poles, old out, new in, done.
I am not going to claim that I am absolutely right and that Kia owner is wrong.Thought of battery charger but then again for 2 reasons I ruled it out.. possible damage to electrical system and ECU
CTEK makes good chargers.I have just completed a little project.
The battery is appears to be completely sealed, I could not see any vent holes at all. However, there is still plenty of ventilation without lifting the bonnet.When batteries are on charge they need ventilation.. do you lift the bonnet to disperse any gasses that are given off..
If you look at the first photograph, you will see that the wires bolted to the battery, run down the side to a plug and socket. I unplug here until I need a top-up. It saves getting the crocodile clips out and there bulk make it awkward to close and secure the bonnet. As an aside, the connector has a traffic light type warning system. Red, battery needs charging, Amber, battery OK, and Green fully charged. These are pretty useless really, but come with the lead so fitted it.…CTEK makes good chargers.
Why do you need a charger permamently connected to your battery?