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Battery acid / paint damage / Negative cable oxidised Obligitory I f***ed up and now i'm paying for it. A year back i went interstate for about 3.5 months and left my car in a mates back yard with a tarp over it. I'd left a lead acid battery connected thinking that i'd just jump start it when i got back. Came back and i had a big star shape of rust under the bonnet above the battery and further surface rust below the battery area. Wonderful. Fast forward a bit, change of address and saved some cash, and firstly, can't find a competent person that can actually tackle this engine bay damage properly, and neutralise whatever the hell it is on the paintwork. I am assuming it is battery acid/vapor damage but i have no idea what happened. I've paid a bloke 900$ in Dandenong (Vic) to crack at it and all his paint is just bubbling up and peeling off again. On their warranty card it says they don't cover rust and he doesn't want anything further to do with it particularly. I've put a brand new lead acid from repco in there and the thing worked for about two weeks and now it won't hold a charge at all. Alternator is giving me 14.4 when i jump it, fortunately i had the alternator reconditioned only 20,000 km's ago. I've noticed some oxidisation on that main negative lead thats soldered and screwed to the chassis but unsure if this can prevent a battery from charging. At the end of the day, i think i've got f**ked battery and it has been leaking down its back all over my engine bay again, no idea why, it's 5 weeks old. I plan to replace it with a dry battery if i can find one that fits. I'll note that on this R34 the battery compartment was really tight and i pulled out a white tray that used to be under the battery. Is it neccesary or no? I know for example my Falcon has its own plastic surround for cooling. This one On the R34 is just sitting on the chassis held with a clamp. Questions i suppose, recommend a type of dry battery thats correct for 34 Gtt? Can a bad negative connection prevent a battery from charging? Why do these lead acid batteries keep freaking bubbling over ( amplified sound system in car too much strain?) Know someone in vic that knows how to tackle rust/acid or an auto elec familiar with fault finding electrics in skylines. Thanks for your time. I'm aware i f***ed up. cheers