I've heard that from a number of people, none of whom ever named
the satellite in question. As someone who works with satellites
on a daily basis I find the story improbable given the typical
variations in orbital period due to the anisotropic nature of the
Can you provide some information that would allow a person interested
in this to run the story down to its source?
Perhaps this supposed confusion stems from differing interpretations
of what it means to 'completely drain' a battery. Once there is a
noticeable loss of speed or torque, can one not say that the battery is
Draining a NiCad BEYOND completely does irreversible damage to it
for certain values of completely.
My battery vendor uses Cadex equipment to test and condition
batteries. They have some great books about batteries on their
website. If you have to pay the Batteries in a Portable World is a
great primer without any of the Handyman myths.
Speaking of Ni-Cd batteries, does anyone know if the Dewalt XPR batteries
will work in a standard (non-XPR) drill? I've seen some deals on the 18v
XPR batteries, and it seems like my drill's batteries got too cold over the
Speaking of getting cold, is there a cure for the batteries getting cold?
They seem to have lots of juice fresh out of the charger, but they seem to
die quicker than they used to.
According to DeWalt any of their batteries are interchangable as long
as the voltage is the same (i.e the 18 volt standard, xr, xr2, xr+ and
xrp batteries will operate in any DeWalt 18 volt cordless tool). It is
my understanding that the batteries are all at least backwards
compatible with the chargers (i.e the XRP battery can be charged on a
charger that came with a xr battery).
well guys I have been in the RC Racing circuit for about 6 years now
and probably have somewhere in the neighborhood of 1500 in batteries
and I have two chargers @ approximately 650 a piece. and when NiCD's
are used they are only run once per day then discharged and put away
with a resistor keeping them completely dead 0.0 volts on the other
hand if we run NiMh batteries then you can run them about 3-4 times
per day and you NEVER discharge them completely (this can damage NiMh
and LiON Cells) always store them with about 1.0-1.1 volts/cell or
about 40-50% charge. well this is what most RC racers do for optimum
cell performance. hope it helps.
also reviving the cells with a high voltage for a short amount of
time is common practice in RC called ZAPPING and they sell devices
made for this. it is a high voltage spike (12 - 90 Volts DC) which
lowers in internal cell resistance and increases capacity and cell
voltage. this may or may not seem relevant but we run 3.6 A/hr packs
and torture these things draining them in under 5 minutes 80 amp
discharge rates. and this is what keeps them going.
sorry for the long post
(P.S whenever my dewalt packs start losing performance I drain the
battery completely and cycle it using one of my RC chargers works
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