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Batteries for lighting systems?

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Batteries for lighting systems?

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Old 11-02-04, 03:50 PM
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funbun
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Batteries for lighting systems?

Home built lights. I've got a Xeon stobe light and a Lowes low voltage stop light for the light system on my bike but I do not have an adequate battery. I need something light wieght and long "burning." Does such a thing exist?
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Old 11-02-04, 03:57 PM
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I'd start at BatterySpace among others. Try Googling.
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Old 11-02-04, 05:30 PM
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Note: batteryspace.com and all-battery.com also sell through e-Bay at a significant DISCOUNT off of their website prices. I've bought NiMH "Tenergy" and "Powerizer" cells and custom packs from both recently. They will assemble custom battery packs, as well. Make sure to get a high-quality charger to keep those cells alive - don't skimp on that part.
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Old 11-02-04, 06:33 PM
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Hi,
that website has some chargers on sale. Are any of those good? How does one tell?

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Old 11-02-04, 08:22 PM
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A charger should have negative-delta-V detection and trickle charge, and it's better if it doesn't charge the batteries too fast, because too much heat degrades your batteries. I can't quite remember what the best range for charging current is.
There are lots of expositions out there on the interweb about charging NiMH batteries.
I spent about a week reading them. I have the V-6988 now, which is OK. There are some fancy
chargers out there that go up over $100 and charge everything under the Sun.
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Old 11-02-04, 10:08 PM
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http://www.batterystation.com/ for cells far better quality then batterspace. plus they will build packs for you. ebay is great to buy rc battery chargers. you can get a excellent one for around 40.00
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Old 11-02-04, 11:20 PM
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"Far better"? o_O Sanyos might be nice, but I can't afford 'em.
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Old 11-02-04, 11:29 PM
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well when them cheap ones fail like mine did then you don't save any money.
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Old 11-03-04, 01:08 AM
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Well, when the expensive ones fail you save even less. :/

Anyhow, I'm pretty keen to bench-test these for giggles now that I have 3 "brands".
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Old 11-03-04, 02:03 AM
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May I suggest that you switch from using the filament bulb(s) for taillights, to using LEDs? That will vastly improve your burn times right there. I currently use six LEDs for my tail lights; I could easily double that number without seriously affecting my battery burntime.
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Old 11-03-04, 07:00 AM
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Yeah, I may build a new system of all LEDs. I found this
http://www.backpacking.net/makegear.html

It has a section on building your own LED's. That would reduce wieght by a great amount.
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Old 11-03-04, 07:47 AM
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I wish I were as handy electronically as some of you! One can also purchase reasonably priced LED lights at auto parts places or places like

http://www.led-r-us.com/products.htm

I have a couple of the 8-LED 1284R marker lights with reflex lenses so they are reflectors even when the lights are off. These are also nice because they don't require special mounts and are weather tight. On my other bike I have a many-LED truck stop-turn-tail light wired on the brake light setting. It is BRIGHT!

I just use inexpensive sla batteries as I am not concerned about whether the battery weighs 2 lbs or 4 lbs.
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Old 11-03-04, 08:23 AM
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Cool! I may take that route. You say they don't have mounts. How do you stick them onto your bike?
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Old 11-03-04, 09:27 AM
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The 1284 has two holes for mounting screws. I fashioned a mount using aluminum bar stock from Lowe's. I used 2"x1/8", but if I were to do it again I would probably use 1 1/2"x1/16" and just double it if it needed to be stiffer. Easy to cut to cut, drill and bend to required shape.

Oh, it only draws something like 0.035 amps, almost nothing. I actually have two mounted side by side.
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Old 11-03-04, 09:47 AM
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for LEDS these are about the best http://www.used-police-cars.com/whelen-tir3-leds.html
I ahve thought of them but since my voltage on my system is about 19v i would nto want the hassle of anotehr battery pack or making a 12v pack.
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