Battery problems help please

[stefjones]

Hi everyone, fitted a small lightweight battery off eBay today, all was well till I over tightend one of the terminals, went to halfords to get a new terminal as i cracked old one, fitted new one, flat battery. Jumped it and left it on for a good 20 mins, all was fine for about 20 mins then car died. Had it on the charger, same happened. Seems like it doesn't want to charge? Maybe I didn't connect everything on the battery? Could someone point me in the right direction or maybe stick a photo up of your battery? Any help would be amazing I'm now without a car stuck in a layby!

 

[MicKPM]

What's the alternator doing (output wise) whilst the engine is/was running as it may not be a battery fault?

 

[stefjones]

Seems as though its that that's at fault as its not charging at all, what should it be putting out?

 

[MicKPM]

It varies depending on what consumers you have on but at idle I'd like to see a min of 13.8v to 14.4v

 

[stefjones]

Anything below that and the alternators at fault? Ill get the battery spec up would that help?

 

[stefjones]

Ps is there a chance I didn't connect a wire for the alternator?

 

[stefjones]

COMPACT LIGHTWEIGHT RACING BATTERY


JUST 5.3KG!!


SPACE SAVING SIZE 181x77x167mm





THIS IS A HUGE 10KG LIGHTER(approx) THAN A STANDARD 43AH BATTERY & AROUND 1/2 THE SIZE.





OTHER RACING BATTERIES AVAILABLE - PLEASE SEE MY SHOP ITEMS





This lightweight battery should provide enough power to start and run most 4cylinder engines in kit cars, sports 2000 Duratec, FF1600, FF2000, Formula Renault, Westfield, Caterham, Lotus Elise Challenge, Renault clio, race cars without alternetor up to 1600cc & race with alternator up to 3000cc.





SPEC:


Length - approx. 181mm


Width - approx. 77mm


Height - approx. 167mm


Weight - approx. 5.3Kg


Terminals - 12x12x1.2mm flat blade, 6mm diameter hole


Completely sealed Lead-Acid battery


Maintenance Free





PERFORMANCE @ 25°C:


Voltage - 12v


Capacity - 20Ah


Cranking current - approx 680Amps(5 secs)





The battery should be mounted in an upright position.





Designed for motorsport use.





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[stefjones]

Any chance I missed a wire off the alternator?

 

[daveypower]

get a lend of a proper battery and check to see if it does the same thing, id never have a racing battery, when they go flat arent you ment to charge them for 24hrs or something, you cant quick charge them like a normal battery. sappose to wreck the altenator to, i dont know the ins and outs of them but thats what ive been told.

 

[stefjones]

cheers mate, that'd also make sense as its only been boosted off a charger for 5 mins. got a new battery to put on tomorrow, id like to keep it a small one as ive changed all the terminals now n it'll be a right game to change it all now fingers crossed its just the battery then and not alternator related