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2 batteries powering 1 lamp / Vistalite Nightstick
I have a Vistalite Nightstick system with 2 NiMH batteries. The system
comes with a y splitter that I assume was designed to power two lamps from one battery. I've tested mine in the reverse configuration, running one lamp with two batteries and it works however I fear I may damage the bulb or reduce its life if I use that configuration. Does anyone have expertise in this area that can offer me some advice? -- -------------------------- Posted via cyclingforums.com http://www.cyclingforums.com |
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#2
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2 batteries powering 1 lamp / Vistalite Nightstick
scottshields wrote:
I have a Vistalite Nightstick system with 2 NiMH batteries. The system comes with a y splitter that I assume was designed to power two lamps from one battery. I've tested mine in the reverse configuration, running one lamp with two batteries and it works however I fear I may damage the bulb or reduce its life if I use that configuration. Does anyone have expertise in this area that can offer me some advice? The directions that came with my Vistalite Nightstick system says: "Warning: Only use the Y-cord for driving 2 headlights with 1 battery. Do not connect two batteries with Y-cord" I would rely of the expertise of the manufacturer. There is no real benefit of paralleling the batteries via the Y-cord. If run time is your issue, you should stop and move the battery connection. -- David Ornee, Western Springs, IL USA David Ornee, Western Springs, IL USA -------------------------- Posted via cyclingforums.com http://www.cyclingforums.com |
#3
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2 batteries powering 1 lamp / Vistalite Nightstick
daveornee wrote:
The directions that came with my Vistalite Nightstick system says: "Warning: Only use the Y-cord for driving 2 headlights with 1 battery. Do not connect two batteries with Y-cord" I would rely of the expertise of the manufacturer. There is no real benefit of paralleling the batteries via the Y-cord. If run time is your issue, you should stop and move the battery connection. That's interesting... My instructions read: "If using two sticks with one light connect two male ends of the y splitter to each stick and the female end to the battery cable." I checked the voltage produced with this configuration and it's only .5 volts higher than one battery alone. This doesn't seem like enough to make a difference. Scott -- -------------------------- Posted via cyclingforums.com http://www.cyclingforums.com |
#4
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2 batteries powering 1 lamp / Vistalite Nightstick
scottshields wrote:
daveornee wrote: The directions that came with my Vistalite Nightstick system says: "Warning: Only use the Y-cord for driving 2 headlights with 1 battery. Do not connect two batteries with Y-cord" I would rely of the expertise of the manufacturer. There is no real benefit of paralleling the batteries via the Y-cord. If run time is your issue, you should stop and move the battery connection. That's interesting... My instructions read: "If using two sticks with one light connect two male ends of the y splitter to each stick and the female end to the battery cable." I checked the voltage produced with this configuration and it's only .5 volts higher than one battery alone. This doesn't seem like enough to make a difference. You're connecting the two batteries in parallel so the voltage will be essentially unchanged (just goes up a little since the load on each battery is less), so the problem is not with the lamp. However, it's not an ideal situation for the batteries (esp. if they're NiMH) unless they are well-matched so they always have the same state-of-charge. And I wonder what you see as the advantage. If you just have one battery connected at a time you'll get a clear indication when the first one runs out of charge and you still have the second available to get home. With both connected in parallel they'll both go dead together and you could be stranded without any light. This is especially a problem with NiCd and NiMH cells that have a very rapid voltage drop when they run out of charge so you don't get much warning time before the light goes out completely. |
#5
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2 batteries powering 1 lamp / Vistalite Nightstick
scottshields wrote:
I have a Vistalite Nightstick system with 2 NiMH batteries. The system comes with a y splitter that I assume was designed to power two lamps from one battery. I've tested mine in the reverse configuration, running one lamp with two batteries and it works however I fear I may damage the bulb or reduce its life if I use that configuration. Does anyone have expertise in this area that can offer me some advice? I have the VistalLite NS2 - HYP 15. It come as one headlight and two batteries. I have used the light both ways, with one battery and with two. The run time is shorter with one battery than with two. I have never burned out a bulb. So I think you can use it which ever way you want. -- Tommy T -------------------------- Posted via cyclingforums.com http://www.cyclingforums.com |
#6
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2 batteries powering 1 lamp / Vistalite Nightstick
On 5 Nov 2003 12:22:00 +1050, tross45
wrote: scottshields wrote: I have a Vistalite Nightstick system with 2 NiMH batteries. The system comes with a y splitter that I assume was designed to power two lamps from one battery. I've tested mine in the reverse configuration, running one lamp with two batteries and it works however I fear I may damage the bulb or reduce its life if I use that configuration. Does anyone have expertise in this area that can offer me some advice? The Y- Splitter will allow you to run the two batteries in parallel... no harm will come to the lamp...it does raise battery life issues though. if they ran in series that would damage the lamp. |
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