Technical data

Instructions for use
Spare parts list
Price list



nano compact with reflector for halogen-illuminant
(spot or flood)

Plug in power-pack Lithium-Manganese












The nano compact re-chargeable underwater lamp is our first lamp utilising the lithium manganese cell technology. Theses cells are the latest development in lithium cell technology and allow us to combine the features of a small compact lamp with above average power attributes in an extremely safe design.

These cells have distinct advantages in regard to safety compared to nickel cadmium and nickel metal hydride cells particularly when they are overloaded or age. When the cells deteriorate with age, the chemical reaction in the lithium manganese cell does not produce the highly explosive hydrogen gas. In addition to this, there is no danger of the explosive reaction between lithium and cobalt metals, possible in lithium ionen cells.

Thanks to this stability and safety in the lithium manganese cells, we are now able to construct a lamp that can be charged without opening the housing, an attractive feature for divers, but one we were unable to endorse without the application of lithium manganese cells.

Despite the feature of charging the lamps in a closed housing, the nano compact lamps also have the plug in power pack for quick and simple replacement of the cell pack making a 2nd cell pack an ideal companion on dive trips.This feature also allows the user to replace an aged cell pack without the need and expense of sending the lamp in to a specialist workshop for cell replacement. The re-charging time of the lamp with the standard off-shore charger 1/6 takes approx. 3 hours.


Space with holder for spare halogen bulb



LED-indicator for capacity and brightness

Control unit


A modern micro processor controls the electronics in the lamp and provides numerous features and information for the user:

The magnetic field surrounding the switch is constantly monitored and prevents the lamp from being activated by an external magnet/magnetic field. The standard high performance 20W HLX halogen bulb is supplied with a carefully controlled over-voltage power that increases the performance of the bulb more than 25%.

An electrical current limiter controls the sensitive start up phase of the halogen bulb when the lamp is turned on, ensuring that the bulb, despite the over voltage, has a life expectancy of approx 100 hours. The 4 stage brightness control allows the user to individually set the lamp to the ambient conditions.
The brightness set and the resulting remaining burn time are both shown in the LED display. A low discharge protection device shuts the lamp down avoiding a drastic reduction in cell voltage below acceptable levels.
Before the low discharge protection cuts is activated, the lamp warns the user of the imminent end of the lamp burn time with 3 blinks.
Just before the lamp shuts down, the lamp will blink continuously to warn the user that the lamp is about to switch off. Reducing the brightness setting of the lamp extends the burn time and the lamp will burn continuously again for a limited time.
If the lamp fails while operating, the LED display turns on and serves as emergency lighting.
As with all our lamps, an automatic SOS signal (Morse alphabet, 3 x short, 3 x long, 3 x short blinks) can be activated if the user is in a distress situation..


nano compact with LED-Modul
4x3,5W or the new 9x3W
(also available with red-light-compensation)


The front housing cover with the spot or (optional) flood reflector with the halogen bulb can be removed and replaced with a powerful LED module (4 x 3,5Watt / Spot and new 9x2,5Watt / spot also available with red-light-compensation and blue-light for fluoreszenz activation). The functions of the lamp, such as power control, activation of the SOS distress signal, and remaining burn time warning as well as total discharge warning will be fully sustained.


Detail design-engineering work



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High-Tech-Kleinstleuchte incl. variable power setting and charger off-shore 1/6 Hartenberger Kleinleuchten mini compact electronic
order code Type
Bulb / Time
Size [mm] / Weight]
nano nano compact
7,2V / 3,6Ah LiMa
20 W / 65 Min.
155 x 59 Ø / 0,7 kg
429,00 €
algo21 Surcharge for automatic rapid charger LG off-shore II 78,00 €
lednano LED Reflektormodul nano compact 4x3,5 Watt (spot) Adapter G4 199,00 €
lednanob LED Reflektormodul nano compact 4x3,5 Watt (spot) Adapter G4 (450 nm blue light, fluoreszenz) 209,00 €
lednano9 LED Reflektormodul nano compact 9x2,5 Watt (spot) Adapter G4 249,00 €
lednano9r LED-R Reflektormodul nano compact 9x2,5 Watt (spot) Adapter G4 (red light compensation) 249,00 €
lednano9b LED-R Reflektormodul nano compact 9x2,5 Watt (spot) Adapter G4 (450 nm blue light, fluoreszenz) 269,00 €

order code Description  
translg Transportbag Nylon in black for charger LG off-shore 1/6 13,00 €
translgo2 Transportbag Nylon in black for charger LG off-shore II 13,00 €
transnano Transportbag Nylon in black for nano compact 13,00 €
nnanog Neoprene sleeve in yellow nano compact 13,00 €
nnanos Neoprene sleeve in black for nano compact 13,00 €
spiral Spiralkabel aus Kunststoff mit Stahlseele und VA-Karabiner incl. VA-Ring 26,00 €
karabiner Karabiner aus Messing/Bronze (auch mit dicken Handschuhen zu bedienen) 5,00 €
floodnano Reflectormodule Flood for nano compact incl. matt glas 59,00 €
spotnano Reflektomodule Spot for nano compact 49,00 €

Halogen bulb
order code Description Socket  
h610 6V/10W G4 8,00 €
h620 6V/20W HLX G4 8,00 €
h630 6V/30W HLX G4 10,00 €

order code Description Size  
40x3 O-ring for housing 40 x 3.0 50°Viton blau 4,00 €
40x1.6 O-ring for housing 40 x 1.6 50°Viton blau 4,00 €
48x3 O-ring for glass lens 48 x 3.0 60°Viton blau 4,00 €

Power pack
order code Description Voltage/Capacity  
wanano Power pack nano compact 7,2 V/4,5 Ah LiMn (now more power) 169,00 €
wananor Power pack nano comp. (repairing, new cells) 7,2 V/4,5 Ah LiMn (now more power) 109,00 €
All prices include 19% VAT (german Tax). Rights reserved for technical changes
  ©Hartenberger Unterwassertechnische Geräte GmbH - Stand 01.2023