11 replies to this topic

[wrinkles_2]

I am just finish a engine rebuild, what size of battery do I need?

[TehMarchant]

Not again, do a search next time. The biggest and best value would be a 075 Pug diesel battery.

Edited by TehMarchant, 21 July 2013 - 08:32 PM.

[ad444t]

I bought a exide 075 excellent quality battery with very good cranking power it cost me £50 off ebay

[OfMini&Men]

075 fits

 

Halfords list

 

038 standard

or

053 upgrade

Edited by OfMini&Men, 21 July 2013 - 08:46 PM.

[reallybig]

halfords 075

 

3 types to choose from whichever you like

[Danny76]

075 or 063

 

Wouldn't bother with the 038, it's only £40 (iirc) at helfrauds, but its only 265 CCA

 

A standard lead 063, comes in at 360 CCA, if your running a stereo or etc definitely worth the extra grunt

 

Don't whatever you do buy any cheap lion or banner battery - they are naff! (to say the least)

Can get a decent bosh S3 063 for £40 on the bay!

[jaydee]

Depends on what alternator you have

dont fit a 60Ah battery if you have a 40ah alternator

theres a varta blue top battery available in 40Ah and 45Ah and those have a CCA of about 430-450

Have a look in FAQ section, Kernow posted something about batteries.

[Badboytunes]

Im sure I fitted an 086

 

Its from a pug 306 diesel.

 

Perfect fit,

[KernowCooper]

Alternator wont make any difference, way it works is if you have a 60a/h battery and a 60 a/h alternator it will in theory charge it in a hour except it wont as when flat the 60a/h alternator will only put in a maximum amount of charge for a sec or two and then the regulator will cut the charge back so a 40a/h alternator will also charge a 60a/h battery or a 300a/h battery for that matter.

 

When the alternator needs to be bigger is when the total current draw of the whole circuit is 60a/h and you have a 40a/h alternator, then the reserve in the battery is being pulled out to replace the difference on the max charge of the alternator.

 

And if you think about it you can charge a 60amp hour battery with a 500mw home charger

 

If the max current draw never exceeds the max output of the alternator then the battery is charged, so even the early 22a Dynamo with a 101 control box can charge a 60a/h battery no problem, but put 4 Cibies on and you in trouble.

Edited by KernowCooper, 23 July 2013 - 10:32 AM.

[jaydee]

One thing is a home charger, one thing is car, theres a huge risk you wont be able to fully charge the battery if you do short trips and have extra accessory fitted

[KernowCooper]

which is the same as a dynamo used to be its the short trips the problem not the dynamo or battery . if you had a 45a/h 17ACR and a 45a/h battery you could still have the problem.

[jaydee]

Very true, thats why dont reccomend a big Ah battery, most minis are being used as a weekend toy and arent run for more than half hour, best to get a battery with a healty cold cranking amperage.

Otherwise it will just drain power through the alternator and probably the battery will have a short life itself.

My bini neither has a big capacity battery and its got a 105Ah alternator, it simply uses a 55Ah battery with a good CCA (580 iirc).