be greatful if anyone can confirm the above for me asap thanx the problem i have with current battery is it wont start unless i jump it with jump leads all that happens is dash lights come on but wont start but head lights flick on and then go off ? once i start it with jump leads i can drive it but it wont start if left for 20 minutes or more. i took it to halfords for battery test and multi meter shows it is dropping down from 11.8 to 11.5 with in a minute and told need a new battery as not holding charge i have been offerd a bosch battery brand new but not sure if it is correct one can anyone confirm if a bosch S5 100 amp 830 cold crank is correct thanx