Question for car gurus!
- Thread starter Ramo
- Start date
Battery registration is a BMW feature (Mini is a BMW product) and it is not required to re-register when you disconnect for charging.
The registration process is required to establish the alternator charging parameters.
No, it's ensuring the battery meets the requisite specifications (AGM, amp hours, reserve capacity, CCA) and it assigns the voltage regulator charging parameters.
Correct.
All that info has to be entered into the car’s computer? Pretty soon batteries will come with chips in them and a RJ-45 Jack (EVs most certainly do).
OP
Ramo
AmTHRASHador of Chugz
Its start/stop battery so I think its AGM but Im not sure.
What I want to do is disconnect it take it out of the car charge it from the wall and put it back in the car and reconnect. Only thing stoping me is not knowing if i need to re register as it costs ££££££ with dealer.
My BMW tech amigo says it's not a problem
OP
Ramo
AmTHRASHador of Chugz
Good to know, thaks so much for all the info.
Amp Mad Scientist
Ambassador of Heresy
Batteries will just charge up, without any entered parameters.
When the battery is discharged it draws current from the charger.
When the battery is charged, it stops drawing current from the charger.
Charger being the alternator...
It doesn't care how big the battery is or how small...it works the same way.
Disconnecting the battery clears stored fault codes from the engine computer.
But driving afterwords, restores these readings because the system constantly re-checks itself.
(after a certain amount of driving any fault codes will be re-detected anyway...)
I run a Toyota truck battery in my Hyundai accent (it's 2X larger than the original battery) The car doesn't care at all.
The charging system itself doesn't see any difference between one battery or another.
From what the charging system sees: a battery is a battery is a battery.
BMW has a totally different battery management system.
Amp Mad Scientist
Ambassador of Heresy
Car battery cork sniffing?
Registration ensures the correct battery is installed, but it also sets the voltage regulator on/off thresholds. When a battery begins failing, the alternator will charge more aggressively. If you do not register the replacement battery, the system will overcharge the new battery..
OP
Ramo
AmTHRASHador of Chugz
What @Robert Herndon said, my wife dose not drive a lot, when she drives it’s usually very short distance. That dose not give car enough time to charge as it should, because of that start/stop is not working as car thinks if its stops it wont be able to start.
I disconnected battery in my car and it messed up whole thing.
In older cars this was not a issue but in newer cars it is.
I disconnected battery in my car and it messed up whole thing.
In older cars this was not a issue but in newer cars it is.
Buy a cheap battery maintainer.
Should have an 07 Honda Civic. Had to replace the battery a few years ago. After the fact, I learned that if you disconnect the battery for any reason…. The radio/stereo/cd player/gps no longer functions. Honda put in an anti theft feature so if the “radio” was stolen it’d be dead. So do the thief no good. Doesn’t matter that said radio is so built into dash that it’d take special tools and a 1/2 day of someone that knows what they’re doing to get said radio out. You need a special code to enter once power is restored. I’m 2nd owner. Previous owner did not leave code with owners manual where it was when he bought the car new. Dealer had to make my radio live again. Fortunately, it was in for a repair and they fixed the radio while it was there. Butt headed move by Honda.
Ok. Done venting.
Ok. Done venting.
AGM batteries charge differently. They require more than just an alternator.
Sp8ctre
Ambassador of Steel
Motorola 2-way radio batteries already have chips in them. You can diagnose a lot of issues and refresh a seemingly failing battery.
You need special chargers as well...