Upgrading Hartenberger

Hi!

I'm gonna buy a Hartenberger Wrack Maxi 30 or 50w halogen.
The battery pack is a 12X1.2V 3600mah in series. I'd like to upgrade it to a powerful light ( around 2000 lumens ) with at least 3 hour light time.
But honestly I'm lost between all these LED. What should I buy?

Thanks ;-)

Why you would buy Hartenberger wreck and rebuild it ? It is BIG LAMP

otherwise

something like

led http://dx.com/p/sst-90-2300lm-led-emitter-8000k-white-light-bulb-4-2v-47961

reflector http://dx.com/p/sst-90-smooth-aluminum-reflector-7-3cm-diameter-47996 or http://dx.com/p/sst-50-smooth-aluminum-reflector-5-1cm-diameter-47997

and driver http://pcb-components.de/index.php?...category_id=6&option=com_virtuemart&Itemid=64

you have to do very good heatsink because of large diameter of lamp !

Great light indeed but due to transition to Tek diving, I need something more powerful with 3 of 4 hour length of light...
Btw, thanks ;-)

ups I give you wrong links ( i have just seen 10W HID )

reflector http://dx.com/p/53mm-37mm-aluminum-...nd-accessories-for-5-cree-xr-e-emitters-18842

use some small leds like cree XP-G2 http://www.led-tech.de/de/High-Powe...XP-G-S2-auf-Star-Platine-LT-1876_120_138.html in series

driver some 1500mA / 12V http://pcb-components.de/index.php?...category_id=6&option=com_virtuemart&Itemid=64

you get some powerful hotspot with nice corona 5/450 lm max= 2250 lm +/-

better and you save batteries using original tank
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......

Thanks! I was saying to myself that there was a problem of autonomy with your first proposal
Unfortunately, the width of the original reflector is quite low, around 35mm. However multi-LED reflector seems to be the only solution.

http://www.led-tech.de/de/High-Powe...R5-auf-23mm-Star-Platine-LT-1852_120_117.html
http://www.led-tech.de/de/High-Powe...ach-Optik-15°-LT-1853_106_115.html?cross=1853

It looks me good but I need a narrow beam, 6-10°...

in that case (diameter ) you have only one solution SST-50 or CREE XM-L2 U2 on cooper (https://illuminationsupply.com/cree-xml2-bare-u2-1c-tint-6500k-p-279.html )

with aspheric lens like http://dx.com/p/glass-optics-for-flashlights-28mm-5297

TIR optics http://www.led-tech.de/de/High-Powe...e-Mobdar-extra-narrow-6°-LT-1211_106_122.html

maybe better reflector (if you have space) http://dx.com/p/aluminum-smooth-flashlight-reflector-silver-108911

driver http://www.led-tech.de/de/LED-Contr...ntstromquelle-LT-1952_118_119.html?cross=1952 3A
http://pcb-components.de/index.php?...roduct_id=114&option=com_virtuemart&Itemid=64 2,8A

Thanks! That's exactly what I'm looking for

This one finally fits perfectly with my light: http://www.led-tech.de/en/High-Powe...REE-XP-G-R5-on-round-PCB-LT-1627_120_117.html
23° beam but I'll follow your advice and buy an aspheric lens
Just a last question to be certain to buy the right thing: what driver should I buy? By preference on LED-tech.de.
Huge thanks ;-)

contact http://www.candlepowerforums.com/vb/member.php?80889-jspeybro - he have fine thin frensell lens , I think you can cut them down and set right before thick glass.

you could try their driver http://www.led-tech.de/de/LED-Contro...tml?cross=1952 3A could be fine

Huge thanks ;-)

Click to expand...

just show me some pictures what you have done ;-))

I Presume you will want to use it for diving? Otherwise it may not be the best choice to buy in the first place.

First things first: You want 3hours of lighting capabilities. The battery is 12v*3.6Ah= 43.2Wh. 43.2Wh / 3h = 14.4W of maximum load to achieve the 3h runtime.

A collegue of mine has a simalar light and he wanted to upgrade it aswell, so I advised him the following:
3* XM-L with a 3A taskled driver, because he wanted different brightness levels (this needs a momentary switch though, which I doubt your light will have). This way, you can have the brightness you want (2500lumens OTF) and the runtime you want (up to days on the lowest setting).

If you do not want different levels, but a set brightness: you should find a suitable driver which delivers the right amount of current.

The 4* XP-G board you saw, is OK, but this can not be run with a buck driver on the 12v battery. You should stick with a maximum of 3*XP-G or 3*XM-L.

The battery pack is a 12X1.2V 3600mah in series.

Click to expand...

and buck driver have drop of 1V ; it could just fit in , but right some low drop linear driver or sepic would be fine too.

You are right indeed, Misread it. 14.4v is still on the low side for 4 LEDs though. Very few buck drivers are working efficiently at 1v drop too. A linear driver like the taskled LFlex will work great if you have a momentary switch. 12*1.4v= 16.8v fully charged, so you will be alright there.