Quote:
Originally Posted by SlowOne
Those numbers are usually more accurate, and they do get checked by people like ROAR and BRCA as part of their testing for homologation.
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So far as I'm aware there are no tests done to confirm that the mAh or C ratings of cells are accurate - certainly if you read the rules and regulations for BRCA and EFRA homologation there are no provisions in there for performance testing. The homologation requirements relate to dimensions, weight and information - so long as the pack is within the required dimensions, the sample provided is within + or - 4% of the stated weight and the relevant information on safety and disposal is provided then the pack will be homologated. This is because there are no common standards in the industry for calculating the mAh and C rating of packs, different factories and resellers use different methods and criteria. So if the BRCA wanted to test a pack it would need to know the exact method the manufacturer had used to calculate the relevant figure - this information is not a requirement of the homologation process, the person/organisation submitting the cells does not need to provide this.
However, I do know that there are moves afoot to use a standard test proceedure to compare the performance of a number of the packs currently on the market.