Final "Dead A123 2500mah pack" UPDATE:

I did a 10 amp discharge test today down to 2.75v/cell or 5.5v pack voltage.....
Ambient temperature was 75*F

Starting voltage was 6.859v (both cells within 1mv)


Results:

2441mah out at 10 AMPS!!! (timer had 15m:12s) ..... (0.026v difference between cells)


After resting pack for about an hour, I charged back up....

6.301v pack voltage before starting charge.......

(2 minutes into charge both cells within 2mv balance)


2479mah went back in @ 3 amps......(51m:17s on timer)
(7.4mohm/6.9mohm Internal resistance on cells)(balanced within 1mv)


My tests so far say this pack is safe to use, and I couldn't be more happy...
Dodged a bullet on this one!

Note to self: Turn ALL switches off, bonehead!

Originally Posted by Pakratt76

Final "Dead A123 2500mah pack" UPDATE:

I did a 10 amp discharge test today down to 2.75v/cell or 5.5v pack voltage.....
Ambient temperature was 75*F

Starting voltage was 6.859v (both cells within 1mv)


Results:

2441mah out at 10 AMPS!!! (timer had 15m:12s) ..... (0.026v difference between cells)


After resting pack for about an hour, I charged back up....

6.301v pack voltage before starting charge.......

(2 minutes into charge both cells within 2mv balance)


2479mah went back in @ 3 amps......(51m:17s on timer)
(7.4mohm/6.9mohm Internal resistance on cells)(balanced within 1mv)


My tests so far say this pack is safe to use, and I couldn't be more happy...
Dodged a bullet on this one!

Note to self: Turn ALL switches off, bonehead!

So

so....what?

It sounds like a good report of resurrecting a pack...or are you seeing something in the numbers that tells you differently?

If you think the pack is still bad, let us know! because I would be tempted to use this same procedure if I had to resurrect a pack from a mistake like this...but I don't want to lose a plane as a result!

Originally Posted by SnowDog

so....what?
!

It's one of two things.

1. A Gregisum

2. Thinks it could have internal damage that may not be showing now but could go south down the road and cost a airframe.


I am taking bets that #1 is it.

To quote Kenny "My tests so far say this pack is safe to use, and I couldn't be more happy...
Dodged a bullet on this one!" Ken will be using this very batttery pack at the Hoverpalooza this weekend!!

Originally Posted by Kitman

So

So OLD.

Originally Posted by SnowDog

so....what?

It sounds like a good report of resurrecting a pack...or are you seeing something in the numbers that tells you differently?

If you think the pack is still bad, let us know! because I would be tempted to use this same procedure if I had to resurrect a pack from a mistake like this...but I don't want to lose a plane as a result!

Very good report! I'm very happy with the results and all looks great...

Originally Posted by CEThomas

It's one of two things.

1. A Gregisum

2. Thinks it could have internal damage that may not be showing now but could go south down the road and cost a airframe.


I am taking bets that #1 is it.

Might be a slight bit of Gregisum..... but the pack would have to be much OLDER....

Originally Posted by Pakratts Mistress

To quote Kenny "My tests so far say this pack is safe to use, and I couldn't be more happy...
Dodged a bullet on this one!" Ken will be using this very batttery pack at the Hoverpalooza this weekend!!

You betchyah! Right on.... Looks good to go...
and it will be airborne in the Corvus...

Good Thursday Morning!!

one word:


HOVERPALOOZA!!!!!!!!!!!!





Well, maybe a second word too:

COFFEE!!!!!!

A little music for the final countdown to
Hoverpalooza 2K14

Europe - The Final Countdown (Official Video) (4 min 56 sec)

Originally Posted by Buggie

Good Thursday Morning!!

So

Lol

2 in a row.....



OH NO......... Did somebody drop a deuce in Kitman's Cornflakes?

Originally Posted by Pakratt76

2 in a row.....



OH NO......... Did somebody drop a deuce in Kitman's Cornflakes?

Didn't mean to

maybe he's trying to tell us that he's taken up sewing.

I thought I would draw first Blood! Just a couple as*s laughing at my as*s.