Batteries for TDCi

[rondeo]

Anecdotal evidence shows Ca batteries (Supercharge, Century) get the car started and running for years, Ag(silver)/Ca batteries ditto.

The smart charge system reduces fuel consumption in accordance with basic laws of physics.

A DVM plugged into the cigar lighter while driving shows the charging voltage increasing under deceleration and reducing under acceleration.

The difference between Ca and Ag/Ca technologies under the smart charge system seems to be an open question. I suspect it's pretty small, and might not be worth the money.

BTW Cobrin why not use a backup supply while changing batteries?

[cobrin]

Originally Posted by rondeo

Anecdotal evidence shows Ca batteries (Supercharge, Century) get the car started and running for years, Ag(silver)/Ca batteries ditto.

The smart charge system reduces fuel consumption in accordance with basic laws of physics.

A DVM plugged into the cigar lighter while driving shows the charging voltage increasing under deceleration and reducing under acceleration.

The difference between Ca and Ag/Ca technologies under the smart charge system seems to be an open question. I suspect it's pretty small, and might not be worth the money.

BTW Cobrin why not use a backup supply while changing batteries?

Fully agree rondeo.

I did use a battery saver 9V battery (square smoke alarm type to be exact) connected it to the aux power outlet aka 'cig lighter port', it was indicating power (has an LED was bright). Before I used the battery it was measured 9.9xV so full capacity, I've had this adaptor+inc battery since Jan unopened knowing this was the next issue.

It did save the Radio stations and BT paired phones but looks like nothing else was saved. I just checked the 9V battery again and it's 9.92V and in the adaptor 9.72V so certainly enough. If I ever get the chance again I could try alligator clips on the end of the lead instead of the cig adaptor and directly attach it to the Battery leads but I doubt I'll be doing that for some time to come.

[rondeo]

I used a 12v sealed battery connected on the main terminals. Doesn't matter much I guess.

[NZ XR6]

Originally Posted by rondeo

I used a 12v sealed battery connected on the main terminals. Doesn't matter much I guess.

I did the same and didn't lose any settings. I think that's the safest way to do it as the Aux power outlets are switched.

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[cyclone1410]

Originally Posted by NZ XR6

I think that's the safest way to do it as the Aux power outlets are switched.

That's correct. After around 15 minutes or so they seem to switch off. Actually a good feature when I am travelling. Short wee stops keep my in-car fridge running long enough so I can have a cold beer at the end of the day. Great car.