67Rob · Mar 23, 2015

Datatek said:
www.batterymegastore.co.uk The brand was Alphaline but that may have changed.

Cheers.
The closest in terms of spec is this - Hankook Car Battery / Hankook Batteries / Batteries by Application

Will this fit in terms of height as I think the one in mine at present is 210mm?

Datatek · Mar 23, 2015

67Rob said:
Cheers.
The closest in terms of spec is this - Hankook Car Battery / Hankook Batteries / Batteries by Application

Will this fit in terms of height as I think the one in mine at present is 210mm?

That's the one, lid just goes on. They have changed the brand, still 4 year warranty. Had mine 4 years, no problems

If you search by vehicle type it comes up with that one.

N2O · Mar 23, 2015

You just need 664 type battery. Yuasa makes good batteries for example.

Datatek · Mar 23, 2015

N2O said:
You just need 664 type battery. Yuasa makes good batteries for example.

Bigger is better, 664 is only 110AH 750CCA. Yuasa are great but bloody expensive.
The P38, especially the diesel needs as much power as possible when cranking.

67Rob · Mar 23, 2015

Datatek said:
That's the one, lid just goes on. They have changed the brand, still 4 year warranty. Had mine 4 years, no problems
If you search by vehicle type it comes up with that one.

Great.
Next, replacement alternator, any advice on where to order.

Ps. Thanks for the help.

Datatek · Mar 23, 2015

67Rob said:
Great.
Next, replacement alternator, any advice on where to order.

Ps. Thanks for the help.

What is wrong with your alternator? You can fit a new diode pack and regulator for not a lot. I'm in France, so a bit out of touch with where would be the best place to buy, but whatever you do the output needs to be 14.2 to 14.8 volts, 14.5 volts is a good compromise. Lower than 14.2 and the battery will not last long especially if you do a lot of short runs.

67Rob · Mar 23, 2015

Datatek said:
What is wrong with your alternator? You can fit a new diode pack and regulator for not a lot. I'm in France, so a bit out of touch with where would be the best place to buy, but whatever you do the output needs to be 14.2 to 14.8 volts, 14.5 volts is a good compromise. Lower than 14.2 and the battery will not last long especially if you do a lot of short runs.

As it's only putting out 13.8 I thought it was on it's way out.

Datatek · Mar 24, 2015

67Rob said:
As it's only putting out 13.8 I thought it was on it's way out.

No, just an early one, you can replace the regulator assembly for about £25

N2O · Mar 24, 2015

Datatek said:
Bigger is better, 664 is only 110AH 750CCA. Yuasa are great but bloody expensive.
The P38, especially the diesel needs as much power as possible when cranking.

Thats why i'm using Yuasa 640 SHD battery - 1000A, 100Ah(new ones are rated 115Ah). Works great, but need to replace alternator - it used to give 14.3V, now only 13.8-13.9V after some mudding. And it's bloody cheap(at least in Poland).

Most of cranking problems are solved with adding additional earth strap from battery to engine. And hot starting problems too. There is no way that factory thin wire is going to transfer that amount of power to starter.

67Rob · Mar 24, 2015

Datatek said:
No, just an early one, you can replace the regulator assembly for about £25

Great. How easy and where from? I'm very new to these cars.

Datatek · Mar 24, 2015

67Rob said:
Great. How easy and where from? I'm very new to these cars.

Pretty easy, don't know where from in the UK, I'm in France, you could try Ebay. Wammers would know. You could try a search, it's been done many times.

wammers · Mar 24, 2015

Datatek said:
Pretty easy, don't know where from in the UK, I'm in France, you could try Ebay. Wammers would know. You could try a search, it's been done many times.

This is what i fitted to my 2.5 diesel with Valeo alternator. VALEO VERG1060 VOLTAGE REGULATOR GERMAN 17200 107825 VW FIAT CITROEN PEUGEOT | eBay I know this is 14.2 set point. There is another one called up for Landrover VERG1019 but i don't know what the set point is on that. Fitted the VERG1060 two years ago gives 14.2 and still working.

Datatek · Mar 24, 2015

wammers said:
This is what i fitted to my 2.5 diesel with Valeo alternator. VALEO VERG1060 VOLTAGE REGULATOR GERMAN 17200 107825 VW FIAT CITROEN PEUGEOT | eBay I know this is 14.2 set point. There is another one called up for Landrover VERG1019 but i don't know what the set point is on that. Fitted the VERG1060 two years ago gives 14.2 and still working.

14.2volts, as you have found, is perfectly adequate

wammers · Mar 24, 2015

Datatek said:
14.2volts, as you have found, is perfectly adequate

I don't have a full calcium battery. 14.4 is better suited to those. Unless you are willing to charge them with an higher output charger now and again to knock the sulphate off the plates that a lower charging rate will build up over time. 14.2 is part way there 13.8 would be a bloody nightmare on a fully calcium.

Datatek · Mar 24, 2015

wammers said:
I don't have a full calcium battery. 14.4 is better suited to those. Unless you are willing to charge them with an higher output charger now and again to knock the sulphate off the plates that a lower charging rate will build up over time. 14.2 is part way there 13.8 would be a bloody nightmare on a fully calcium.

As I have said before, the spec for lead calcium batteries is 14.2 to 14.8 volts, I published the spec on here some time back.
I agree that 14.4/5 is better though.
My LC battery has done 4 years now with 14.2 volts but not a lot of short trips involved as we live in the middle of nowhere. If I refurb the alternator I will go for 14.5 volts.

wammers · Mar 24, 2015

Datatek said:
As I have said before, the spec for lead calcium batteries is 14.2 to 14.8 volts, I published the spec on here some time back.
I agree that 14.4/5 is better though.
My LC battery has done 4 years now with 14.2 volts but not a lot of short trips involved as we live in the middle of nowhere. If I refurb the alternator I will go for 14.5 volts.

Yes but a lead/calcium battery is not a full calcium battery is it. It will have antimony on one plate and calcium on the other in each cell. A full calcium battery has calcium on both plates.

Datatek · Mar 24, 2015

wammers said:
Yes but a lead/calcium battery is not a full calcium battery is it. It will have antimony on one plate and calcium on the other in each cell. A full calcium battery has calcium on both plates.

Go read the specs.
:- Antimony added to the lead grids acted as a catalyst and made outgassing (loss of hydrogen and oxygen during use) worse, and frequent water replenishing was required. So battery manufacturers looked for another material that could strengthen the lead grids.

Calcium was added to both the positive and negative electrodes in the early 1970s. It reduced outgassing enough to allow manufacturers to claim they building "maintenance-free batteries".

However, lead/calcium batteries are not very resistant to "deep-cycling" (deep discharge followed by a full charge)

Which is why batteries fail if allowed to discharge fully.

Grrrrrr · Mar 24, 2015

grumpy52 said:
my son accidently put the interior light on in thr rear went flat over 24 hrs usually stands all week recharged all ok now

Mine did that! Fortunately I spotted it when I went back outside for something. How bl**dy stupid is having that not switch off when you lock it with the fob?!

wammers · Mar 24, 2015

Datatek said:
Go read the specs.
:- Antimony added to the lead grids acted as a catalyst and made outgassing (loss of hydrogen and oxygen during use) worse, and frequent water replenishing was required. So battery manufacturers looked for another material that could strengthen the lead grids.

Calcium was added to both the positive and negative electrodes in the early 1970s. It reduced outgassing enough to allow manufacturers to claim they building "maintenance-free batteries".

However, lead/calcium batteries are not very resistant to "deep-cycling" (deep discharge followed by a full charge)

Which is why batteries fail if allowed to discharge fully.

Depends on what version of who's specs you read Keith. Not going through all that again.

Datatek · Mar 24, 2015

wammers said:
Depends on what version of who's specs you read Keith. Not going through all that again.

Any sealed automotive battery is LC with no Antimony whoever's specs you read. (GEL batteries excepted)

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