Re: Battery woes

On Wed, 13 Jun 2007 07:29:20 -0700, a very sad SMS, who reads
newsgroups with one eye closed, said:

I assume you are talking about your 20D grip ;-) Again, I think that
peformance is an issue because your camera doesn't know it is getting power
from NiMH rather than LiIon. There is a voltage difference that is more
significant in series.

Right. In reality it's not a big deal. With Li-Ion batteries in the grip
the battery level indicator actually indicates the amount of charge
left, since the voltage declines pretty linearly as the battery
discharges. With NiMH, it always indicates the same level, over 65% or
so, until the batteries are exhausted and the voltage drops off rapidly
(no fancy circuitry to do a pulse load test).

There's a name for guys like you. Charlatan. And another.
Fabricator. And yet another. Snake Oil peddler. Far from always
indicating the same level, NiMH cells decline in use from just under
1.3 volts to just above 1.0 volts. For proof, just take a look at
any battery manufacturer's data sheets and charts. Even the crude
homemade chart that you posted a link to yesterday shows this.


I bet on the Nikon it's just accounting for the voltage differences
between 1.5V AAs, 1.2V AAs, or Li-Ion, and not providing any more
information via a more sophisticated load test.

I'll bet it's a rare day when you know what you're talking about.
Or perhaps I should say I'll bet it's a rare day when you say what
you really believe.

.