Thread: Battery charge voltage info poll.

for the Foz.

Originally Posted by drivesafe

1 ) What is the voltage at the cranking battery’s terminals. 12.8v @ about 12 degrees at 0630

2 ) Type of vehicle. SIII2.25D

3 ) What make and type of battery ( a model number will do ) N70Z x2 hardwired in parralell

4 ) When was the last time the vehicle was driven. Yesterday

5 ) How long was the last drive 30 minutes

6 ) Is this your day to day drive or a once a week vehicle daily driver

7 ) Alternator size 12v 35A

8 ) Is this your tow vehicle or other.does it all

If you can, the following info would also be of interest.

9 ) What is the voltage at the cranking battery when you first start your vehicle ( cold start )12.7v after 30 seconds on the glowplugs and about 5 seconds of cranking (rises to 13.8 in about 20 minutes) (alternator doesnt excite properly till 1000ish RPM is passed)

10 ) With the motor still running, what is the voltage at your cranking battery after a 30 minute drive.[/B] 13.85v

The first question will be more accurate the longer the vehicle's motor has been off, preferably 12 or more hours after the motor was last on.

1 ) What is the voltage at the cranking battery’s terminals.
12.2v (With SC80 connected)

2 ) Type of vehicle.
2000 Disco II Td5 Auto

3 ) What make and type of battery ( a model number will do )
Voltz Premium N87

4 ) When was the last time the vehicle was driven.
18 Hours Ago

5 ) How long was the last drive
30km

6 ) Is this your day to day drive or a once a week vehicle
Daily

7 ) Alternator size
120amp

8 ) Is this your tow vehicle or other.
Only vehicle

If you can, the following info would also be of interest.


9 ) What is the voltage at the cranking battery when you first start your vehicle ( cold start )
13.8 v


10 ) With the motor still running, what is the voltage at your cranking battery after a 30 minute drive.
13.6v

1 ) What is the voltage at the cranking battery’s terminals: 12.58 (main, after recovery from door open) & 12.52 (aux - some accessories permanently powered) Batteries connected via Matson VSR.

2 ) Type of vehicle: TD5 D2 MY03 Oct 02 build

3 ) What make and type of battery ( a model number will do ): AC Delco S31-900MF (main) Remco RM12-80 (AGM aux)

4 ) When was the last time the vehicle was driven: More than 14 hrs ago

5 ) How long was the last drive: 45 mins

6 ) Is this your day to day drive or a once a week vehicle: everyday

7 ) Alternator size: 120A Nippon Denso

8 ) Is this your tow vehicle or other: All duties

If you can, the following info would also be of interest.

9 ) What is the voltage at the cranking battery when you first start your vehicle ( cold start ): 14.54 @ 15 deg C (morning & stabilised about 45 secs after starting)

10 ) With the motor still running, what is the voltage at your cranking battery after a 30 minute drive. 13.85 (45 min drive & fridge running off aux)

I forgot to mention that on cool mornings I've seen up to 14.8 shortly after startup.

So far with 20 vehicle’s cranking battery’s stats post both here and on the other sites, the count is 3 = 70% or less, 3= 80 to 90% and 14 are 90% and better.

This is starting to show that the myth that no vehicle batteries will charge over 70% is just that, a myth, but lots more posting are coming.

Another test I carried out Tim , since my Discovery hardly gets driven , I took the Champion battery out on "Wednesday" night and placed on battery charger for 12v "Trickle charge , this morning the battery had not reached it's full state of charge even thou it had been on charge for over 48 hours , the only way to force it to reach it's full charge state is to change the position of the charge to Rapid charge ( 12 v ) and only then the battery charger indicated that the battery was Full.

Battery Voltage Fully charged = 13.03 volts

Engine on Voltage accross the Terminal = 14.03 volts

with the battery Isolator ( Vsr )


hope this helps.

1 ) What is the voltage at the cranking battery’s terminals. 12.42V
2 ) Type of vehicle. 96 300 Tdi Discovery

3 ) What make and type of battery ( a model number will do ) Delkor M24 MF > 6yrs old

4 ) When was the last time the vehicle was driven. 20 hrs ago

5 ) How long was the last drive 30 mins

6 ) Is this your day to day drive or a once a week vehicle Day to day

7 ) Alternator size 100A

8 ) Is this your tow vehicle or other. Tow Vehicle as well as everything vehicle

If you can, the following info would also be of interest.

9 ) What is the voltage at the cranking battery when you first start your vehicle ( cold start )
14.45V
10 ) With the motor still running, what is the voltage at your cranking battery after a 30 minute drive. 14.36V

Originally Posted by pawl

1 ) What is the voltage at the cranking battery’s terminals. 12.42V
2 ) Type of vehicle. 96 300 Tdi Discovery

3 ) What make and type of battery ( a model number will do ) Delkor M24 MF > 6yrs old

4 ) When was the last time the vehicle was driven. 20 hrs ago

5 ) How long was the last drive 30 mins

6 ) Is this your day to day drive or a once a week vehicle Day to day

7 ) Alternator size 100A

8 ) Is this your tow vehicle or other. Tow Vehicle as well as everything vehicle

If you can, the following info would also be of interest.

9 ) What is the voltage at the cranking battery when you first start your vehicle ( cold start )
14.45V
10 ) With the motor still running, what is the voltage at your cranking battery after a 30 minute drive. 14.36V

Sorry for the hijack, but I need to mention here that I have seen plenty of these Delkor units last 6 and 7 years. I fit only these now to LR's as they supply a direct replacement for D2 and Td5 Defender (31-900) that are as good as the OE Delphi one and the same dimensions.

JC