The OEM heatshrink is the heatshrink the cells are covered in as they come from the manufacturer.
In the case of sport packs the cells are sold only to the trade and aren't covered in heatshrink at all, just a cardboard tube. In those cases the whole pack must have a label on it by whichever company builds the pack. The pack assemblers label needs to be intact so the cells can be identified, if you take off the heatshrink holding the pack together there is no way of identifying the individual cells at all so the pack is now illegal for racing.
The rule is so the cells capacity can be identified, otherwise there is nothing to stop someone building a stick pack from last years IB4200s by replacing the cells heatshrink with a plain one so there's no way of identifying the cells.
It also stops any manufacturer putting together special team packs from unlabelled cells that aren't homologated.
The way the rule is written, taking it literally, only cells covered in cardboard will be allowed, and only when covered in heatshrink with a makers label on it. I suspect as any ready built pack of 3700s are allowed and individual cells can be identified as 3700s then they are likely to be allowed. It would have to be a very pedantic scrutineer to ban them.
And this does mean the BRCA considers GP3700s as a sport pack
30-01-2008
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