Toepak MoonShineâ„¢ HID with zippy battery?

[wojtek]

http://www.topeak.com/products/Lights/MoonShineHID

i am wondering what would happen if i connected this lights to a 12v zippy battery?

The battery pack that comes with it has a 2 power options: 7W and 10W.. The pack is 14v - Lithium Ion PowerPack features an integrated RISC controller putting light functions at your fingertips eliminating the need for additional cables.

What power would the light have if connected directly to 12v zippy?

 

[docnjoj]

Ohm says about 0.83 amps@12volts so it seems quite reasonable. I run my Magicshine at about 0.5 amps at 14 volts off af a Lyen converter. Quite bright. Your light could be similar but I dont know about that processor to regulate the light.
otherDoc

 

[neptronix]

It's gonna run at lower power since the topeak light seems to be a 4 cell and the zippy of yours is a 3 cell.
They're probably quoting the nominal voltage of a 4 cell ( 3.6v/cell ) rather than the maximum charged voltage.. that's why i believe it's a 4 cell.

So that stock battery may be fully discharged ( 12v ) by the time your 3 cell battery is near the top of it's charge ( 12.6v )

 

[Spacey]

I've got some spare Lipo 3.7V 5.8Ah cells or a spare 3.3V 16Ah Headway cell I was thinking of wiring up 2 x Cree LED lights to. The 16Ah cell should give silly amount of battery time for the light.

 

[wojtek]

thank You all for your input - appreciated!

yes that makes sense! 2x12v at 24v might be too much for the bulb right?

It's gonna run at lower power since the topeak light seems to be a 4 cell and the zippy of yours is a 3 cell.
They're probably quoting the nominal voltage of a 4 cell ( 3.6v/cell ) rather than the maximum charged voltage.. that's why i believe it's a 4 cell.

So that stock battery may be fully discharged ( 12v ) by the time your 3 cell battery is near the top of it's charge ( 12.6v )

 

[neptronix]

I bet it would be too much voltage.
You can fudge voltages here and there with some CREE lights, others not so much. I think a 40% leap over the base voltage is a bit too much !!

If you already have one, you can experiment with it and find out.
hook up two 9v's to it in series and see how it fares with that.
If it starts buzzing / whining, then fugheddaboutit.

WOAH.. that light is like $300-$500 O_O

 

[wojtek]

yes - but i was lucky enough for buy it at less than 50% off clearance long time ago - now trying to revisit my basement and use as much as possible to cut costs on new projects! 8)

I think i will just stay with the topeak battery for now. It is as new but just an extra battery on board... But i will only use it as a night light and LEDs for daylight

I bet it would be too much voltage.
You can fudge voltages here and there with some CREE lights, others not so much. I think a 40% leap over the base voltage is a bit too much !!

If you already have one, you can experiment with it and find out.
hook up two 9v's to it in series and see how it fares with that.
If it starts buzzing / whining, then fugheddaboutit.

WOAH.. that light is like $300-$500 O_O

 

[neptronix]

I see, i see.
Well, if you ever have any dead lipo, a 4 cell pack may work.
Double check that the cell range is correct though.

An easy way to do this is to measure the voltage at the charger input or battery terminal when the light considers itself fully charged..
Then measure it when it considers itself fully drained..

Then you've got the voltage range. divide that by 4, if it's about 3.0-3.3v drained and 4.1 - 4.2v full, then you've got lipo or lico voltage cells, which is a plus.

This would be a great use for a 5s-8s lipo pack that had a few dead cells in it. Cut off the offending cell and turn it into a 4S pack by rewiring the balance cables and moving the negative or positive over from where the dead cells were.

5000mah battery would be flippin' awesome and if the original cells are 4.1-4.2v max voltage type, you could even use the original charger for the light to charge the lipos up.

This is exactly how i am going to run my magicshines. I have forgone the idea of a DC-DC converter because of my odd top voltage at 15S ( ~62v )

 

[heathyoung]

The bulb + ballast combination is a welchy allen, there is pleanty of information on these on CPF (candlepower forums). Pretty long in the tooth now, the LED lights have well and truly got them beat nowdays.