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The 50 watt HIGH BEAM for bicycles.

Step 9Big fat battery

Use a bungee cord or large zipties to secure the battery to the rack.
Tape each of the two wires to a different terminal.

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1 comment

Feb 7, 2012. 8:26 AMandyoaryoga says:

i really want to know, what kind of battery that you used. because i'm on my project for making a lamp, for filming, for skateboarding

Feb 9, 2012. 1:19 AMFriendOfHumanity (author) says:

Hello Andyoaryoga,

The basic info about the battery is in step 1; all I can add is that it is from a very, very cheap Einhill rechargeable drill. (see photos)
It is 18 volt but I guess that a 14v or 12 v will do .. . um .. . it's not lithium or anything special ( which would be better ) . . . .I mean , I think you could even make your own pack from 10 rechargeable AA batteries. ( these are £1 a pair at my local Poundland shop . . . I don't actually know anything about electronics . . . I just keep it simple and see if it works.

As I have stated elsewhere, I only use this for limited amounts of time; you may get away with using it for longer you may not: Let me know.

You could just get something like this and use rechargeable battery:

http://www.machinemart.co.uk/shop/product/details/1-million-candle-power-rechargeable-spotlight

It's only £12.

Good luck with the filming.

FOH