Appeared in DIVER February 2007

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LIGHT  Scubapro Module
Its 12V 4.5Ah nickel-metal hydride battery is contained within a Delrin housing with a grippy shape that makes it look a bit like a component from a 1950s water-heater. (Did I ever say that about the GreenForce battery pack Thats another smack on the wrist coming my way!)
The Scubapro Module lights anatomically shaped handle can easily be swapped for a tank-mounting band if required, and if you prefer to use the unit in its umbilical form.
The umbilical connection screws into the same place as the charging lead. Like the individual lamp-heads, this is protected from incoming water by three O-rings in line. The umbilical itself is interesting because it has a dry cable running within
a watertight hose.
You can screw a choice of lamp-heads into the female connection at the other end of the umbilical, or simply keep the handle of the battery-pack in place, screw the lamp-head directly into the pack and use it as a conventional lantern.
The first thing to do is to charge the battery, by screwing in an adaptor that takes the charging lead. The intelligent charger can be converted to fit British, continental European, American and Australian power sockets by slipping in one of the appropriate four adaptors supplied. You should charge a battery like this at least once a month, even if you dont use it.

I WAS SENT THE BATTERY PACK AND CHARGER together with the triple-LED head already assembled. I was also sent the modules to convert this unit to either a high-output (Xenphot) halogen head, an HID head or a head that uses an IRC, a conventional 6V domestic halogen lighting bulb.
It was a bit like looking at the parts of a Meccano set laid out before starting to make that heavy-duty crane illustrated on the box-lid. It was daunting for me, but I bet its exciting for those divers who enjoy building their equipment as much as they do using it.
You need a special Scubapro wrench to undo the head without scratching its anodising. I had to ask Scubapro where the HID bulb was. It turned out to be enclosed in an opaque plastic tube, to avoid it being touched by human hand!
I managed to put each one together and see it work. Whether every customer will be able to do this successfully and get a depth-proof result, only time will tell.
The Module Light is switched on by screwing the head into the battery-pack to make a contact. Switching it off requires caution, because I can well imagine that some owners will manage to unscrew the connection too far while under water and flood it.
Similarly, a lamp like this that is not switched on before diving might inadvertently turn on at depth. I think the rule must be to switch on immediately before plunging in and not switching off until you are safely out of the water.
So what is the difference between the choices of light source The IRC and Xenophot tungsten bulbs give a bright warm light. Burntime is around 70 and 80 minutes respectively from a fully charged battery. That effectively means charging it before each dive.
The LED lamp-head is slightly brighter. It has three 3W high-output LEDs that give a light equal to around that of a 40W tungsten equivalent. The beam is slightly narrower and a lot cooler than the IRC and Xenophot bulbs.
However, the manufacturer promises 5.5 hours of light from one charge, so this will suit those on long cave penetrations.
This was the one I used and I found it to be more than satisfactory. It was outshone only by the biggest HID lamps around. In fact, people I lent it to were reluctant to hand it back. One diver wanted to buy it there and then, until I told him the price!
The HID bulb is the brightest and coolest of the four. It gives a beam of similar focus and width as the other single-bulb options, yet it burns far brighter and for far longer. You should get around four hours of light from a single charge. This is probably the technical wreck divers choice.
The Scubapro Module Light battery pack and charger with the LED head costs £379. Other prices are as follows: HID module £289; Xenophot (halogen) module £32; IRC (domestic) module £27; and umbilical connection £85.
  • Scubapro-Uwatec, www.scubapro.co.uk


  • Divernet Divernet
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    + Excellent performance in LED form


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    - Careful assembly needed
    - Not cheap