trustfire 14500

[fray]

I did a search and didn't find anything right away.

My question is what is the difference between the grey trustfires and the black/red graphic trustfire 14500s?

Does one have a higher discharge rate or are they the same?

 

[boomer2506]

Well I have both and really have not been see a difference.I think may be the red/black trustfires may last abit longer but I mean a bit like mins nothing major.I think the greys you are talking about are Ultra fires not Trust fire.

 

[Rosco]

Trustfire does have grey 14500's, but my Trustfire Flames last longer than my grey's.

 

[fray]

I have been working on a 2xAA box with a booster and a single 14500. I have the greys and with no load I get the correct voltage, but under a load it pulls the voltage down to 3.3v.

I saw the other day breakthru posted the same project I had been working on with the black/red trustfire and his was working.

I have some high drains coming to try it out. I can't find anything on the c values between the trustfires so there is either a difference or I have done something wrong on my circuit. A high drain battery should help me isolate the problem.

 

[breaktru]

That's "breaktru"

 

[breaktru]

I'm using the 14500 Flames, 900mah's.
You will have some drop in voltage with the 14500. Also depends on your load.
Set at 5v and a 3.7ohm atty I get 4.7v out.
Set at 4.23v and a 1.9ohm atty I get 3.8v out
Very little drop when using an 18650, 3000mah or 2400mah.

 

[oldsoldier]

That's "breaktru"

lol well I did the same back when I first ran across you in the forums, the fingers just want to insert that extra letter- I call it auto-incorrect

 

[breaktru]

lol well I did the same back when I first ran across you in the forums, the fingers just want to insert that extra letter- I call it auto-incorrect

I get that a lot. people ask, what's wrong with my english. I tell them that I was born, raised and schooled in Brooklyn.

 

[fray]

I have a 2.8 ohm carto on it.



Maybe it was a Freudian slip on the name lol

 

[fray]

The outside of the battery says trustfire, but negative end of the battery has ultrafire engraved. Getting a hold of the supplier now for answers.

Sounds like some funny business going on.

 

[Mudflap]

I have gray and "flames" trustfire 14500's. The greys are a teensy bit taller than the flames. I couldn't tell you about performance. They're all too tall to fit into my plastic 5V mods.

 

[breaktru]

I have been working on a 2xAA box with a booster and a single 14500. I have the greys and with no load I get the correct voltage, but under a load it pulls the voltage down to 3.3v.

I saw the other day breakthru posted the same project I had been working on with the black/red trustfire and his was working.

I have some high drains coming to try it out. I can't find anything on the c values between the trustfires so there is either a difference or I have done something wrong on my circuit. A high drain battery should help me isolate the problem.

Hey Fray,
What voltage are you set at with NO load

 

[fray]

Initially had it open so it registered 5v but put in a linear pot and dialed it up to 7v with a similar outcome.

I found my old dc power supply for video games which gives me 5v and 7a and hooked it up. With this the circuit works perfectly. I just can't carry an extension cord around with me all day lol

I just got my PCBs in yesterday to use a regulator from maxim. Only comes in surface mount packages.

I don't have the chip number on right at the moment but from the datasheet it looks like it will be much better than the Ti I have in it now.

 

[breaktru]

Let me get this straight:
With the 5v, 7amp supply it works perfect. Meaning NO voltage loss, right?
But with the 14500 you get 3.3v w/load and 5v w/ NO load. Is this correct?
And the load is a 2.8 ohm carto, right? Which would not be taxing the battery or booster @ 8.9 watts and 1.786 amps
If so, I would suspect the battery. How many mah is the 14500?