What battery for V8 RRC?

MikeV8SE · Nov 30, 2011

I'm thinking of replacing the battery on my RRC - it hasn't failed me yet, but is always a bit slow to start on cold mornings and even though I have put it on charge for a good couple of hours, it never reaches (fully charged) so am dubious as to how long it will last.

Can anyone recommend a good battery, or what to look for? I seem to remember a feature in LRO a couple of months back but gave the mag away! :doh:

classic kev · Nov 30, 2011

Numax all the way! Swapped my battery out earlier this year and what a difference, so much more cranking power and although it isn't really cold yet I haven't noticed any difference even after its' been standing for a week. Apart from that a Numax battery is cheaper than most standard 072's or whatever they are now.

MikeV8SE · Nov 30, 2011

Great, cheers Kev! What model did you get?

ovalandrover · Dec 1, 2011

Get the one with the biggest cca and big amp hrs if your going to run an inverter off it when you do your trip

996TURBO · Dec 1, 2011

Got a 125 Ah and 1000 CCA deep cycle battery for something like 119 euros at Battery Megastor UK (they have a ebay shop in France too).

Negative is reversed like P38 OEM battery.

It's a boat battery : Silverline DC31 model

http://www.batterymegastore.co.uk/product/DC31/

Now 95 pounds inclunding VAT and delivery.

3 years warranty...

Length (mm) 330 Width (mm) 172 Total Height (mm) 242 Weight (kg) 26

norseman · Dec 1, 2011

I think it depends on what your RR is used for Mike, obviously if you run a winch then greater staying power is needed but if not then a standard battery from your local auto-shop will be perfectly adequate. Experience over many years/vehicles has taught me the futility of paying silly money for batteries, as one that costs twice the price (of a standard) never lasts twice as long. My current (no pun intended

) battery cost about £60 & is still giving faultless service after 2 years, despite the fact that the RR only gets used about once a week, usually covers less than 30 miles in the process & it never needs charging from an outside scource. It sounds likely that your problem is associated with the charging circuit, put a meter on the battery terminals (after a run) & you should be getting at least 14.4 volts with the engine running.

MikeV8SE · Jan 10, 2012

OK, found these two, both of which are the right size, anyone got a preference to either?

Alphaline: 72Ah, 610CCA, 4 year warranty, £62.95 delivered: Alphaline / n/a / Battery

Numax 072: 70Ah, 550CCA, 3 year warranty, £64.65 delivered: 072 Numax Car Battery 12V 70AH - Car Batteries - Numax Car Batteries

The Alphaline seems to be a better spec, long warranty and a bit cheaper, but never heard of them and have heard of Numax! Thoughts??

norseman · Jan 10, 2012

You pays yer money (etc) Mike. Like many electrical products the 'unknown' may well be made by a household brand manuf. Don't get over excited by the longer warranties offered by some though, many are only actually for one year & then replacement is at the percentage of unused warranty. So if the battery fails at 18 months into a 3 year warranty you'll have to pay half the (current) price of a replacement.

MikeV8SE · Jan 10, 2012

Thanks norseman! I ordered the Alphaline earlier today for the great CCA, hopefully it won't be totally crap!!

What battery for V8 RRC?

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