Convertible Mini wrote:
I have been selling DELCOR batteries for quite a few years now and find them very good. In a Mini I use the NS50PL which has 520 CCA. It would also help to have a decent Alternator and make sure belt is tightened to the correct tension and not too loose or too tight. Also make sure you upgrade the charge wire (B+) if you have an Alternator that charges more than 40 Amps. An additional 6 mm cable from Alternator B+ terminal to solenoid B+ terminal always helps to get the full benefit of having a bigger output Alternator fitted. Just be aware that batteries sold cheap are sold cheap for a reason....... Some companies demand batches of batteries made at a lower cost so they can sell them at a low prices. You need a "FULL" battery not a half empty box of the same size! You get what you pay for.
I have been using these batteries for years, and they're great. I have the 520cca delcor in the mini, and the valiant. If it starts a 4l valiant, it will start a mini :)
We also had one in our daewoo lanos from the factory. We eventually had to change it though - after 13 years and 350,000km. So they last well.