Enloop Torture Test on test2 92hour update in (booring)

[VidPro]

ok i finnaly have the charge station freed up, and started the test.
what is the test??? i donno, i want to see about when a low charge rate will V-drop.
and about when it finnaly vents from overcharge.

ONE enloop in a metal bucket, poorly connected with magnets
one thermal thingee that is probably within a few degrees, reading in F* not C.
and yup that is about the room temperature now
test has just begun.

cell is already about 90% charged, has been parked for about a month.
Jammin in ~200ma , with an unlimited voltage, non-pulsed, power supply could be off a bit here and there
DMM meter shows more digits, so i can observe a v-drop easier.

i will increase the current until the cell reaches an overcharge state (my word for it) and the voltage drops down noticably, this will probably occur when i am not looking, so i start with 200, then 250, then 300, and leave it for a long time, and see what overcharge RATE is above the overcharge ability for the cell.
the IDEA here is to see What slow dum charge rate over hours and days will push it over, C/10 c/12 c/15 300ma ? whatever

the TIME is listed in the post there at the top of each post, and will be within 15 minutes of the pics i take at that time (almost realtime).

monitoring will be done VERY loosly, this isnt my day job

 

[LuxLuthor]

Re: Enloop Torture Test Begins

:tinfoil: :eeksign:

You're crazy man! I love it! :rock:

 

[VidPro]

Re: Enloop Torture Test Begins

30 minutes since starting

Boored yet.

i forgot about the alum pan being a heat sinc
so there is now 2 pieces of foam insulation there, keeping the cell off the pan.

the cell looks like its fully charged now, and so it sits.

sometimes it takes me a while to get the pics publicated.

 

[glockboy]

Re: Enloop Torture Test Begins

 

[VidPro]

Re: Enloop Torture Test Begins

1 hour since starting

2 hours now
75.5*
1.612V

now it might have stabelised, i thought it was stable at the one hour.

 

[LuxLuthor]

Re: Enloop Torture Test Begins

1 hour since starting
74*
16.07V

2 hours now
75.5*
16.12

now it might have stabelised, i thought it was stable at the one hour.

What are you numbers? I thought you were increasing amps....what are they at? And you are saying 16.12 Volts are registering at whatever amp setting?

 

[VidPro]

Re: Enloop Torture Test Begins

oops , decimal point I feex, good thing you spotted that

3+ hours.

and good thing you woke me up, it changed again, hmmm, that is a detecable v-drop already. i was not expecting that.

i wont raise the current for say a day or so, its a dum charge test, so i gotta dum charge it for hours and hours at each setting.
boored yet i was really expecting it to HOLD at a voltage of about 1.60V and just park like that for days. this changes what i should be doing to observe better.

 

[VidPro]

Re: Enloop Torture Test Begins

5th hour

200ma still
1.576V
77.0*F

i sleep now, with it running, hopefully nothing interesting happens.

Notes: room temp changed a bit, can account easily for 1-2*

 

[LuxLuthor]

Re: Enloop Torture Test on 5th hour

LOL..how can you sleep at a time like this. I could see sleeping while the paint dries, but this is real science man!!!! Wake Up!

 

[Mr Happy]

Re: Enloop Torture Test on 5th hour

VidPro, if I may humbly suggest, you are doing the torture test all wrong. This is how you should be doing it: http://www.groupsrv.com/science/viewtopic.php?p=530682

 

[shadowjk]

Re: Enloop Torture Test on 5th hour

LOL..how can you sleep at a time like this. I could see sleeping while the paint dries, but this is real science man!!!! Wake Up!

Aw come on, let the man sleep, it's not like anything interesting is going to happen at 200mA anyway ;-)

 

[VidPro]

Re: Enloop Torture Test on 5th hour

13th hour

timer is +5hours so 12hr 41min about
1.638v current got changed accidentally

room temps are up only 1-2* variation still wall thermometer says 67*

now i wish i had a time lapse on the whole thing
might have to start all over again.

also because it takes so loooong, mabey i should test the battery after the test, and switch to a different cell for each current.
things just arent working out as planned.

 

[VidPro]

Re: Enloop Torture Test on 13th hour

Oh nooo.
i must have bumped something, grrrrr, now i see WTF is going on.
duhhhhh, big 50 (500ma) staring me in the face, good thing i am taking pictures.

 

[SilverFox]

Re: Enloop Torture Test on 5th hour

Hello VidPro,

When using the "standard" charge of 0.1C for 16 hours, you are supposed to add forced air cooling if the cell temperature exceeds 95 F. It looks like you are above that, so I might be inclined to think that you are doing damage to the cell at this point.

Tom

 

[LuxLuthor]

Re: Enloop Torture Test on 13th hour

I think he is sleeping again! :devil:

 

[VidPro]

Re: Enloop Torture Test on 13th hour

it wasnt my fault, aparentally the power supply decided to fail :-(
now it wont go below 320

and because i dont know when it happened, having it tortured at 500ma , doesnt help nothing.
i am testing the battery now, to see what kind of capacity it claims.

so its on to stage2, more complicated and flawable
computer time lapse recording.
A completly different cell is used.

I cannot use my main cameras, and mix them into a PIP and all, because i have jobs to do before this test is completed.
but i do have some older cams, and a spare computer.
so if somehow i can Sqeeeeze all this into one tiny location, i might be able to have a pic without widescreen and 50gigs of data.

see the arrow, that is now holding the battery, in a metal continment that should keep it from rocketing , then right above the vent hole is a lightweight piece of foam, that might move if it vents.
to avoid heat sinking the battery is sitting on teflon tape.


so if this works, its at 340-350ma, its recording 1 frame per Minute, unless there is more movement in the area, in which it will start recording continuous, BUT to slowly to engage probably to see anything.

arggg, i didnt think about how tough it is to try and get everything, like if it vents how the heck are we going to see anything, even if there is little bits of leakage, they can take TIME to show up as stains.

 

[Fallingwater]

Re: Enloop Torture Test on 13th hour

Do some REAL torture, man! Crank up the voltage to 30 and let's watch the fireworks

 

[VidPro]

Re: Enloop Torture Test on 13th hour

it is booooring still at 340ma.
what kind of format do you want to see the time lapse in?

mpeg , as-is will go 60mph through the frames, player would need single frame advance to see individual pics, smallest possible size.

Mpeg, changed for frame rate, so it plays 1frame a second, medium size.

GIF anim, viewable on standard browser without changing anything, speed can be reduced so it plays in web/forum page easily, Largest size

a few selected pics, browser viewable, where something happens with text captions, small size less frames of data.

 

[VidPro]

Re: Enloop Torture Test on 13th hour

ok i squeeezed down the first 3 hours down to 600kb using DIVX
try this http://home.comcast.net/~trivalvid/ENLTor00-03hrDx.avi
(about 1/2meg)

its frame cut to 2minutes per frame. so that is 3 hours in 24seconds.
the temp thing keeps auto shutting off :-(

 

[LuxLuthor]

Re: Enloop Torture Test on test2 3hrs in

Is that Mastech linear or switching?