Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  

Go Back   > >

Electronics, Lighting, & Gadgets HRM, GPS, MP3, HID. Whether it's got an acronym or not, here's where you'll find discussions on all sorts of tools, toys and gadgets.

User Tag List

Thread Tools Search this Thread
Old 04-17-09, 12:20 PM   #1
Junior Member
Thread Starter
Join Date: Feb 2009
Posts: 8
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
battery question

I'm looking to build a battery pack for my light and I'm getting a little confused. I have 4 18650 3.6v 2000mah cells (I think, they came out of a laptop). I'll be wiring them in series for 14.4v. I'm almost positive they are unprotected cells as they are wired to a pcb currently. I don't want to use the current pcb as its the wrong shape and I have no idea what the specs on it are or how its wired.

My question is how should I go about protecting and charging the pack? Should I use a pcb and a smart charger, or use a pcb that has a charging circuit built in such as this one?

I would prefer to use the all-in-one board as it will let me reuse the ac adapter that came with the laptop. Are there any disadvantages to going this route?
pb300 is offline   Reply With Quote
Old 04-22-09, 07:33 PM   #2
24X18's Avatar
Join Date: Apr 2009
Location: CT
Bikes: Scwinn S-750 Elec. Scooter
Posts: 46
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

I've experimented a bit--with Li-Ion..I have found from CELL Phones...
attempting to create High Intensity lights..not real good...
If I might make a simple suggestion...
A Product...from HUSKY...
Called the ReChargeable Worklight...
By pulling off the Halogen Light..and useing your wiring skills...
You get a 12volt...3-amp...Rechargeable...
I paid like...$$26.00 at HOME DEPOT..its really a excellent product...[end]
24X18 is offline   Reply With Quote
Old 04-28-09, 09:31 PM   #3
totoroben's Avatar
Join Date: Aug 2006
Location: Cleveland. Shaker Heights
Bikes: Rans V-Rex, Schwinn Traveler, Panasonic Sport
Posts: 150
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
whatever you do be careful. And if you do build a pack with safety circuits, charge it in a metal bucket. Li Ion isnt your friend.
totoroben is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -6. The time now is 05:29 AM.

  • Ask a Question
    get answers from real people!
Click to start entering your question.