changing battery without power loss - Page 2

T-Cut · 21st June 2008, 20:21

Quote:

Originally Posted by tigerchubs

Not seen one for a few years - - -

Draper do a code saver. Here's one: http://cgi.ebay.co.uk/COMPUTER-MEMOR...d=p3286.c0.m14

TC

Jules · 22nd June 2008, 19:18

Quote:

Originally Posted by Curious_Kiwi

I have a battery charger, so could that be used to maintain power to the system while the battery swap is done?

Or would this fry the system without a battery to soak up the charge?

Cheers, Paul

PS. The battery that just died is a Yuasa with a Rover part number on it, so I guess it is probably original. If so, not bad to get 8 years out of it :-)

Be careful !! You are correct, it could fry the ECU etc, as some battery chargers can rise to 20 volts without a load on them (depends how well regulated they are)
Best to use 9- 12v supply.

rovermech · 22nd June 2008, 19:27

Hi
Never tried it but read some where on this forum that if you turn your radio on before disconnecting the battery when your new battery is fitted the radio works ie - it remembers the code

PYTHON2674 · 23rd June 2008, 13:19

Quote:

Originally Posted by rovermech

Hi
Never tried it but read some where on this forum that if you turn your radio on before disconnecting the battery when your new battery is fitted the radio works ie - it remembers the code

May well work on newer cars, I wasn't so lucky on my old Rover 414SLI

Hampton Caught · 23rd June 2008, 16:40

You can also use the portable jump-start devices that the AA/ RAC use. They have a big batery inside them and connect to the battery/ cables. The AA chap used this technique when replacing my car's battery and it worked fine. I didn't lose the radio code.

Have another look through the car's paperwork though, you may come across the code on a credit-card sized piece of card, or written on the original bill of sale. If the battery is really bad, you may need to input the code anyway.

Good luck,

Steve

22nd June 2008, 19:27	#13
rovermech Regular poster Rover 75 Saloon Join Date: Nov 2006 Location: Sheffield Posts: 54 Thanks: 1 Thanked 17 Times in 8 Posts	Hi Never tried it but read some where on this forum that if you turn your radio on before disconnecting the battery when your new battery is fitted the radio works ie - it remembers the code

23rd June 2008, 16:40	#15
Hampton Caught Loves to post ex MG ZT-T (sob!), Rover 25 and TR7 dhc pilot, but not all at the same time! Join Date: Mar 2007 Location: near Hampton Court Posts: 430 Thanks: 0 Thanked 1 Time in 1 Post	You can also use the portable jump-start devices that the AA/ RAC use. They have a big batery inside them and connect to the battery/ cables. The AA chap used this technique when replacing my car's battery and it worked fine. I didn't lose the radio code. Have another look through the car's paperwork though, you may come across the code on a credit-card sized piece of card, or written on the original bill of sale. If the battery is really bad, you may need to input the code anyway. Good luck, Steve