DIY battery packs

[turbanator]

Originally Posted by divingdingo

anyone know how to solder? wanna solder 10 batteries together !!!

It's easy, you just need 3 hands - anyone from Cornwall could do it

[David]

Salvo solder there packs together.
so before everyone tells you you need to weld them.
yes they solder none taged batteries.

best way ive found is to grind the top and bottem with a dremel just enought to rough up surface. This seems to help solder run / flow.

all the books and information around tells you that the heat form soldering will damage battries. If I were cave diving I would want a welded battery pack or one I had used a few times to make sure it was good.

David

[Step]

[quote=divingdingo;734677].
all good, i've actually bought an intelligent charger off ebay that is supposed to do the lot from lith ion, nimh, etc just incase i decide to upgrade the pack in future and it cost around the same. fingers crossed that it will do what they say it will do.
quote]

Hi would be interested in such a charger, can you post a link, or the make and model?
Thanks.

[Step]

[quote=divingdingo;734695]anyone know how to solder? wanna solder 10 batteries together !!!

OK I know nothing about umbilicals and electrics, soldering but:

My UK D8 takes 8D cells. Nothing soldered there!
So IF you can find a way to reliably fix the batteries together that ensures the contacts keep touching and use some thin strips of copper to conect the ends of you collumns of batteies... to conect to the lead going to the torch head you probably need to solder a cable onto said copper strips or use those contact thingis that crimp on the end of cables (+ solder for durabillity?).

I would not trust s spot of soldering between 2 batteries to last.
Maybe it is just my soldering but even the slightest sideward stress or knock on 2 batteries joind that way I think would break the solder.

[divingdingo]

quote]
Hi would be interested in such a charger, can you post a link, or the make and model?
Thanks.[/quote]

here you go:

X-Power 601BC Digital RC Lipo NiMh Pb Battery Charger on eBay Pièces détachées, Accessoires, Radio-commandés, Jeux, Jouets et Figurines

i asked them directly whether it would charge my set up and they said yes most certainly. but until i receive it i wont know.

dd

[oceanobsession]

Originally Posted by uwila

Q1 - Yes, total capacity 2.6 Ah

Q2 - try buying 6 packs of these 4.5 Ah NiMH C Rechargeable Batteries Up To 4500mAh

To charge the pack, try one of these Ansmann ACS 410P Traveller Battery Pack Charger

I've made my own pack from cells and used an Ansmann charger. Worked a treat and was lots cheaper than buying a manufacturer replacement.

Cheers, Chris

hello chris are thyese batteries c sub batteries thanks oceanobsession

[oceanobsession]

Originally Posted by divingdingo

cheers woz and uwila.

all good, i've actually bought an intelligent charger off ebay that is supposed to do the lot from lith ion, nimh, etc just incase i decide to upgrade the pack in future and it cost around the same. fingers crossed that it will do what they say it will do.

uwila - i wish i had seen those batteries a week ago before i just spent £25 on the ones i have now. still, good link for my next battery set!!

now i just need to solder the batteries in series so that they fit into the canister!

has either of you two used that black shrink wrap stuff to give the packs the professional touch. or do you just use gaffer tape!! where do i get the shrink wrap from, any ideas?

thanks for your help. much appreciated.

hello try this link for shrink rap
PMBL UK - Rechargeable Battery Pack Manufacturers and Assemblers