I was discussing where to buy car batteries with a friend who is a professional driver and who has briefly worked as a mechanic. He suggested buying from one particular shop for several reasons, one of which was that they have a high turnover of stock and that therefore the batteries haven't been standing as long on the shelves. The shop I'd been thinking of going to, he recommended against because selling car batteries is only a small part of their business and he expected the car batteries to be in less than ideal condition from having been in storage for a very long time (years, potentially).
Does this reasoning make sense? I thought car batteries only degraded and discharged when left connected for long periods, and so leaving them boxed and unconnected would not be a problem.
A few clarifcations:
- These are all the "maintainence-free" sealed type of lead-acid battery
- It's worth mentioning that this is Sierra Leone, West Africa, and most car batteries on sale are Chinese or Nigerian brands that are not on sale in Western countries. There might be minimum standards or regulations which would be taken for granted in some countries that aren't necessarily met here (my local friend is always very negative about their quality and jumps at the chance to buy batteries imported from countries with stricter regulations)
- Temperatures vary from about 15°C to 40°C, and they don't appear to have been stored in any particular special way