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those are implementation details around the particular batteries. which is fine. nothing I said is absolving us of physical requirements. my point was entirely
by jatone 5y ago
those are implementation details around the particular batteries. which is fine. nothing I said is absolving us of physical requirements. my point was entirely the system itself as a whole.
there are a number of ways to pluck the chicken. smaller more numerous cells -> same power, faster charging due to concurrency.
point was if your cable can't supply the power the entire point is irrelevant.
- magicalhippo 5y ago> smaller more numerous cells -> same power, faster charging due to concurrency Not really, because smaller cells -> less capacity -> lower current for same C rating. One 1000 mAh battery charging at 5C means 5A charging current, while two 500 mAh batteries in parallel leads to 2 * 2.5A = 5A. And AFAIK typically a larger battery scales better, that is, less dead space for connectors/housing etc so more mAh per volume.
- jatone 5y agofacepalm the assumption being made in my statement is that the individual cell can support the same charging rate. my understanding was it was the chemistry of the cells that impacts the charging rate, not the physical size. happy to be wrong on that though. scaling has mean dimensions. whats best for energy density may not necessarily be best for charging rates.
- diego 5y agoYou don't seem to understand what "charging rate" means. There is nothing magical about subdividing lithium cells. No matter the size of the cell, you can't insert energy at a higher rate per unit of volume.