On 06/19/2015 11:58 AM, Ben Goren wrote:
On Jun 19, 2015, at 9:33 AM, Willie2 via EV <[email protected]> wrote:
I am curious as to how Paul came to his belief.
His methodology is inadequate to the task -- rather like using a roadside truck
scale to weigh the first four people to pass by and concluding that all humans
weigh exactly 200 pounds.
You may be implying that Paul attempted to deduce self discharge from
cell voltage?
When my first lithium pack was new, I was frequently amazed that
NUMEROUS EV folks with extensive lead experience would put a volt meter
to my cells and proclaim: "Why these cells are PERFECTLY balanced!" I
don't know how many times I've attempted to explain that it is almost
impossible to determine state of charge from voltage on lithium cells.
Other than at the tails, of course.
Though I don't know that Paul made that mistake.
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