I HATE things where the rechargeable battery is sealed
up in the unit.... or a bunch of D cells to remove
I want a rechargeable bright camping light whereby the
Li Ion battery packs slips and locks on just like a
good rechargeable drill does. That way can have several
pre-charged packs ready for use.... plus easy to charge
Any advice out there on this?
On Jun 7, 11:23 am, email@example.com wrote:
Several tool companies have a conventional light that uses their
battery packs. You could replace the filament bulb with several hi
intensity leds. You'll need to calculate voltage drop and current to
pick a resistor. That will depend on the voltage of the battery pack,
how many led's you put in series, and the voltage drop of each led.
It's pretty easy to figure out.
If your battery is Li ion, use a charging circuit that incorporates an
IC made for that purpose. And make sure you use a power supply such
that the IC does not malfunction. (Preferably with "linear" rather than
"switching" regulation if your power supply is a solar cell array or
similarly short of "rock solid"). Li ion batteries are fussy about being
overcharged, and their hazards increase significantly if they are
- Don Klipstein ( firstname.lastname@example.org)
several drill makers offer flashlights that use the same packs,but they
aren't "camping lanterns",they all are tightbeam.
I suppose you could make your own diffuser to fit over the flashlight
head,like maybe a translucent plastic tub salvaged from some food
product,or something similar.
That idea for a camping lantern does seem like a good product to
Of course,my $12 Everready 4D cell double tube flourescent lantern works
great,runs for 20 hrs on both tubes or 40hrs on one tube.
too bad they don't make them any more,or are hard to find.
I just don't see them in the stores anymore,just the newer LED version.
On Jun 7, 10:23 am, email@example.com wrote:
There are Cfl units which consume about the same power, Ridgid has
one. I know Leds continue to produce light at a lower power than cfls
or incandesant, but fully draining a battery can ruin it. Until
circuts are inplace, like in your cell phone, to stop the output of
the battery at to low a voltage I think an Led will damage the pack by
dropping voltage to low. Its just my thought.
You'd better off with nicads, They are more forgiving and more
affordable. Weight is not a major factor in this problem. And if you
want to solar charge then the idea of removable batteries no longer
applies. You might as well incorporate enough cells to satisfy your
nightly use. Build a single device with a solar panel on top, led
lights in the middle, batteries on the bottom. Leave it out in the
sun during the day and use it at night. A big version of those solar
pwered garden lights.
On Jun 8, 8:30 am, firstname.lastname@example.org wrote:
I've not seen one. Either just because I haven't t or because it
doesn't exist. It may be too small a demand. Your hardcore camper
doesn't want anything he/she can't backpack. Your casual family
camper is probably fine with the coleman battery powered cf unit.
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