Info on charging NIMH battery packs

[peter k]

Where can I find reasonably idiot-proof instuctions to build one of these. I've heard many people talking about them now, but I would need a recipe type format to follow i.e. A list of what to buy and how to put it all together. It would be an interesting Sunday project.

Peter  

[Davey Willo]

Peter

Treat yourself to this book, I have and it has everything you could want to know... my problem!! I haven't pulled my finger out of my arse and done anything it's told me yet but the book is top drawer, if you wanna build a light then this is the book for you

regards
Dave.

edit: whoops! now I'll add the link eh.... sigh..
http://www.airspeedpress.com/newlitebook.html

(Edited by Dave Williamson at 9:01 pm on Feb. 12, 2003)

[Pierre Farrugia]

Peter have a look here <a href="http://www.briananddebbie.com/images/Scuba/Homemade/NiMH%20Batteries/nimh_batteries.htm

hope" target="_blank">http://www.briananddebbie.com/images....

hope</a> this helps

[Digger]

I did it myself, but I'm still putting finishing touches on the thing. I have found a perfect canister. 4&quot; diameter, with o-rings, and you can make it any length you like with a length of soil pipe. All you need to complete it is araldite.

I don't know what batteries you've got there, but I'd say this canister is ideal for most uses, as well as the fact that at this size you can use buddy pony bands or 5.5&quot; twinning bands to attatch it to your cylinder.

I'll send you my report of the project so far if you like, but I warn you that it's not finished. I'm getting around to it, and just need a few more photos, and somewhere to post the thing.

I don't knwo much about switches etc. so I opted for the Maplins waterproof option. I went for a small one, but I've seen these really hefty ones that look like you could easily use them with drygloves on. I go for wets, so I've got a more sensible size switch.

I would also suggest that if you've got a really new idea on what to use or how to use it, post it on the forum and I'm sure if anyone's tried and failed they'll let you know. I spent about £20 I didn't need to.

Mind you, the whole lot cost me £76 so far, and it's due it's first sea trial in Stoney on Saturday. If anyone's there on Saturday and wants to ask a load of questions, please come up and ask. I don't bite (unless you want me to), and I want other people to try this, too.

[Mr T.]

Hey Digger,

Thanks for the offer of a heads-up on your obvious labours. Hope all goes well for the 'sea-trials' at Stoney and look forward to any pics (email to Heads Up (Jay)) you might have of the project.

[Digger]

It leaked. The bloody thing leaked. I had to pour water out of the lighthead. Bugger. It still worked, even at the bottom depth, full of water. So, it might not be sealed, but maybe it doesn't need to be!

I know where it leaked, though. Between the face cap and the head. I think the glass I've used is too thick.

I'll do the repairs, and report back on the next test. I think it will be in a lake in Wales somewhere. Hodge Close quarry or something like? Anyone been there? All I've got to go on is a sign to say &quot;Do not enter the cave system or you'll die, guaranteed.&quot; Well, something to that effect.

Bren, what is the e-mail address you want me to send the report to? I've got it down in Word at the moment, for want of something better, but you should be able to copy and paste it fairly easily.

[daz]

Hi Digger,

Sorry to hear about your slight mishap, &nbsp;interested in your supplier for the canister, most of the pipes with 'o' rings I have looked at seem about 6&quot; in diameter.

I used 3mm glass on mine, maglight with a 12v low voltage halogen unit inside. &nbsp;It seems water proof to 18m so far.

Cheers,
Daz