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New calcium battery not charging 

 

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 Post subject: New calcium battery not charging
Posted: Wed Nov 09, 2011 9:54 pm 
Oompa Loompa
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Age: 34

Posts: 20

Joined: 4th Feb 2005

Ride: 95 EF XR8

Location: Kingaroy
QLD, Australia

Hey guys, I just got a new Alco calcium battery for my XR8 and have noticed it doesn't seem to charge fully now. I don't have an alternator or battery warning light up. I checked the voltage whilst idling and it's around 13.5V. The volt guage on the dash displays anywhere between 13.5-13.9V whilst driving and drops closer to 13V when the headlights are on. I've had a look around and it seems that the ef V8 alternators are rated at 14V and 110 Amps. I've also read that calcium batteries need around 14.2V or more to charge properly.

My question is what's the best solution here - ditch the brand new calcium batt for a lead acid one, replace the voltage regulator, replace the alternator? Is it worthwhile getting a replacement regulator/ alternator if they're only rated at 14V but I need 14.2V to charge the new batt, and can the regulator output be adjusted if required?

I'm unsure whats the best answer on this one, any suggestions? Cheers
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 Post subject: Re: New calcium battery not charging
Posted: Wed Nov 09, 2011 9:57 pm 
Getting Side Ways
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Joined: 30th May 2005

Ride: 1993 EB XR8

Location: BrisVegas
QLD, Australia

How are you checking voltage? Dash or multimeter?

 

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 Post subject: Re: New calcium battery not charging
Posted: Wed Nov 09, 2011 10:03 pm 
Oompa Loompa
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Age: 34

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Joined: 4th Feb 2005

Ride: 95 EF XR8

Location: Kingaroy
QLD, Australia

I checked it with a multimeter to get the volts at idle, but could only go off the gauge on the dash whilst driving it and thats when I saw it fluctuate depending on load eg. headlights. I did check it with the multimeter with the headlights on now that I think of it and it was 13.3-13.4V.
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 Post subject: Re: New calcium battery not charging
Posted: Thu Nov 10, 2011 3:48 pm 
Getting Side Ways
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Location: Hamilton
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First step is to measure voltage at cruise rpm accurately so you know if the alternator output is OK or not. Measure at alternator terminal and also battery +ve.

Good alternators usually put out about 14.5 volts at cruise rpm.

 

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 Post subject: Re: New calcium battery not charging
Posted: Fri Nov 11, 2011 6:01 pm 
Oompa Loompa
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Age: 34

Posts: 20

Joined: 4th Feb 2005

Ride: 95 EF XR8

Location: Kingaroy
QLD, Australia

Got the missus to rev it to around 2000rpm and checked the voltage at the alternator. It was 13.6V at the alternator and 13.5 at the battery + terminal. The thermo's kicked in while I was checking it and the volts dropped down to 13.4V at the alternator and 13.3V at the batt.

Sounds like I'm up for a new alternator... Theres a few supposedly new ones on ebay for around $260+p/h, anyone know if they're any good or if they're dodgy and I should stay away? I've heard of people paying $600 so it sounds cheap to me.
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 Post subject: Re: New calcium battery not charging
Posted: Fri Nov 11, 2011 6:34 pm 
Getting Side Ways
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Joined: 1st Jan 2006

Ride: Lots, all Fords

Location: Hamilton
New Zealand

I'd try getting a quote from a local sparky first. It may be as simple as a new set of brushes, cleaning the commutator or replacing a dud diode. Over here a sparky will do an on-vehicle test for nothing including a repair estimate. A full-blown quote usually costs a few $$$ if you don't proceed with the repair. But a good sparkies experience is helpful with your Ebay option as a fall back.

 

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 Post subject: Re: New calcium battery not charging
Posted: Sun Nov 13, 2011 6:27 pm 
Fordmods Newbie
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Joined: 14th Sep 2011

Ride: 1995 XG Ute

Location: Port Augusta
SA, Australia

If a calcium battery isn't charged using a calcium charger to start off with the battery will only have like 80% of charge. A calcium charger actually pulses to reach the 100%. Maybe buy a decent calcium battery charger and see how you go.
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