Tenergy 3.7 volts?

[Sleepsalot]

http://www.all-battery.com/TenergyLi-Po ... 189-0.aspx
http://www.all-battery.com/37volt-3000m ... ycell.aspx

So, these seem like they're decently priced, and they seem to have good capacity. I'm wondering if they'll suffice.
Does anybody have any words of endorsement, or perhaps words of caution?

 

[Prog]

Not enough capacity, unless you use a couple in parallel.
Even then, you're only getting 3.7V, and assuming you're making a portable, and probably a N64 or Gamecube, you'll want at least 7.4V (even more for GC wit a stock regulator), so you'll need 4.
Plus, the first one looks a little fat.

 

[Sleepsalot]

I was going to get at least four of them, but yeah, the first one I checked out and found that it wouldn't fit where I wanted it to. I found a nice couple of 7.4's and good 3.7's lying around in my garage, so I'm going with them.

 

[Prog]

Good, as long as you have a protection circuit and smart charger.

 

[Sleepsalot]

Now, all of these packs have protection circuit built right into them with the battery + and - emerging in bare leads. Do I have to take any further precautions when wiring them into my machine?

 

[Prog]

You're sure it has a protection PCB? Then you should be fine.
If there's not charging circuitry inside it, which there likely isn't, then definitely get a smart charger for 7.4V packs.

 

[Sleepsalot]

Yep, I found the models online and they do come with protective board. I'm glad I found them, this'll save me some time.

 

[hailrazer]

Now, all of these have protection built right into them with the battery + and - emerging in bare leads. Do I have to take any further precautions when wiring them into my machine?

The one's you linked to do NOT have pcb's in them .

 

[Prog]

He's talking about the ones in his garage.

 

[hailrazer]

He's talking about the ones in his garage.

Yea I got that. But I didn't want anyone misled about the ones he linked to.

 

[Sleepsalot]

So far you fellows have been a big help.
Now, I just want to be absolutely certain that what I do next will not explode my apartment (or at the very least ruin my batteries).

I'm going for 14.8v. So I'm going to wire up these two 7.4's I've got in series (each with its own protection PCB), and then when I plug my smart charger in, I'll have it set for 14.8 volts. That cool?

 

[Prog]

I think that you should nix the protection PCB's and get a 14.8V protection PCB.
I'm no expert, but I don't think they'll be very safe each on their own protection circuit.
I could be wrong though.

 

[hailrazer]

NO! Do not use the existing pcb . You will need a 14.8v pcb.

 

[Prog]

What are you doing with them exactly?
If you are doing a GC project, just make a custom regulator. Then, the GC will run off of 7.4V.

 

[Sleepsalot]

Alright, cool, I'll get a 14.8v PCB. I would love to make a custom regulator, but this is for a diving light. I told my co-worker that I'd make her diving light rechargeable for a commission of 200$, which she took off the bat.