We will be closed 17th Sept 2021 - 27th Sept 2021

CustomDUO Shop

CustomPITLAMP modules

LED upgrades for mining lamp conversions

CustomDUO Shop 

CustomDUO modules

LED upgrades for the original pre 2018 Petzl Duo - the cavers Duo 



Flippin-Tec modules


LED upgrades for Underwater Kinetics dive lights



The Online Shop allows payment with most debit and credit cards, without the requirement for a Paypal account. Add product to cart and option is offered at checkout. Customduo also accept payment by bank transfer. 


International orders welcome. For more details please see delivery (exclusions may apply)

Bargain Bazaar


Other interesting stuff !!








Blind Bat 20/20


Limited edition high output cave photography light

7.4V USB charger for SCURION tm 


Extremely useful / essential bit of kit for caving lights using 7.4v li-ion battery packs, such as Scurion tm. Easily adapted to older 7.4v systems such as Stenlight etc.


Find it here



3.7V li-ion USB chargers (new)


Full range of USB chargers for 3.7v li-ion battery arrangements. USB-A, micro USB and USB-C. Perfect for very latest caving light tech, such as Rude Nora lamps and Filthy Edna lamps, or other 3.7v li-ion charging requirements.      


Find it here



(BREXIT)  We are shipping to the EU as normal.  We generally post the next working day. However, delivery to EU is very slow at the moment (allow 30 working days). Sorry, this is beyond our control, and thanks for your patience.


Import charges may apply to international orders (a few EU customers have experienced import charges due to BREXIT. Ireland and Belgium seem to be the hottest on this!).