Batteries for UW lights

Ask about gear, cameras, lenses, technique or lighting

Moderators: tswinner, bvanant

Postby Hintermann » Tue Jul 31, 2012 11:36 pm

I know that this is not strictly an UW photography question but I hope that others would not mind.

I am planning to buy a Beuchat Phare 5 LED dive light. This uses 6 AA batteries and NiMH rechargeables are accepted. The torch has power of 1070 lumens and in order to get the best effect out of it, what power AA NiMh batteries should I use? I have several 2900 mAh AA batteries but will this be too much for a torch? I'd like maximum brightness without hurting the torch mechanism.
Hintermann
 
Posts: 21
Joined: Thu Feb 10, 2011 2:26 pm
Location: Wootton Bassett, UK

Postby bvanant » Tue Oct 09, 2012 4:39 pm

Read my article on batteries and chargers. You are confusing power with capacity. 2900 mAh means that the battery could run at 1 mA for 2900 hours but it has the exact same voltage as any other AA rechargeable battery. The current flow through the lamp is determined by the guys who build it and using 2900 mAh batteries will give you the exact same output as using 2000 mAh batteries (if they are charged to the same voltage) but the 2900 mAh batteries might last a bit longer. In any case, I would recommend that you use Eneloop style (low internal discharge) batteries.
Bill

Bill Van Antwerp Canon/Nauticam/Subal/Inon Lots of glass


Technical Advisor to Bluewater Photo


http://www.blueviews.net

User avatar
bvanant
 
Posts: 309
Joined: Wed May 12, 2010 4:16 pm
Location: Los Angeles (more or less)


Return to Underwater Photography Questions

Who is online

Users browsing this forum: Yahoo [Bot] and 5 guests

cron