Can a trickle charger be used as a memory saver?
No, it does not have a power supply mode. It has to sense a minimum voltage (whatever that may be) to stay on. If you connect it to the battery clamps or the OBD2 port or the cigarette lighter and disconnect the battery it’ll turn off.
Do you need a memory saver when changing car battery?
“A memory saver installed while making repairs provides an electrical path through the system and defeats the purpose of removing the battery. They may be okay to use for a simple battery replacement procedure but not during other repairs.”
What does a car memory saver do?
What Is a Memory Saver? A memory saver for your car battery is a connector with a small battery. It has just enough voltage and current to keep all of your car’s computer memory alive while you change the main battery. The connector plugs into the car’s cigarette lighter, or the OBDII connector.
Do I connect black or red first?
When removing the old battery, remember to first disconnect the cables from the negative terminal, which is usually black and has a minus (-) sign then disconnect the cables from the positive terminal, which is usually red and has a plus (+) sign.
Should you disconnect battery when changing radio?
and to answer your question, no you don’t “have” to disconnect the neg. terminal for a radio install but it is always recomended when doing anything involving electrical work on your car and it won’t mess up your engine control module.
Why do people pay for the OBD II memory Saver?
Since I had a need for a “memory saver” while changing a battery on a 05′ S500 I decided that instead of borrowing one from a friend all the time, I will make my own.. Now isn’t it just a power supply that giving negative 12V to pin4,5 and positive 12V to pin 16 in the OBD II port?, why do people pay for it 39.99$?
How to install an OBD II battery in a car?
Now isn’t it just a power supply that giving negative 12V to pin4,5 and positive 12V to pin 16 in the OBD II port?, why do people pay for it 39.99$? and just plug in the battery, connect the clips to the 9v connector wires and to the ends of the car’s battery connectors then disconnect the the car battery and install the new one.
Can a 9v battery be used as a memory Saver?
Also if you do use a small 9V battery remember that everything must be off ignition lights etc as you may only have a max of 10 minutes to change the battery before the 9V battery is drained. This is why it is better to use a good fully charged 12V car battery.
Is there a diode in a memory Saver?
I saw some people who recommend putting a diode in the positive wire so there’s no chance for current to flow backwards into the memory saver. Here’s a video how to build something similar, including the diode and explanation.