I keep a "spare" battery in the garage, It was only used for a few months before becoming a spare but this was about ten years ago. I charge it with a ALDI/ LIDL charger about once a month and it started next doors diesel van last winter. An extra battery, (not necessarily new), will have more capacity than a power pack but you will need a decent set of jump leads and a smart charger as well, but you can use the charger on the car.
Last edited by: Old Navy on Sat 21 Aug 10 at 13:33
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