Does these numbers sound right?

thazy2 · #1 03-22-2002, 11:48 PM

How do u get the 3000 miliamp from these numbers?

I got these numbers from the Turbo 35 after I discharged my 3000hv packs. I can seem to do anything w/ these numbers to get 3000 or something close. can anyone help? Do these numbers look ok. I was alway into gas and now Im trying to learn about electric!

PAck 1:

Av= 6.57
@1v= 6.65
IR= 31.3
MaHR=2608
MwHR=17134
Disc time= 313

PAck 2:

Av= 6.57
@1v= 6.65
IR= 31.3
MaHR=2608
MwHR=17134
Disc time= 313

FrankW · #2 03-23-2002, 12:05 AM

Quote:

Originally posted by thazy2
PAck 1:

Av= 6.57
@1v= 6.65
IR= 31.3
MaHR=2608
MwHR=17134
Disc time= 313

PAck 2:

Av= 6.57
@1v= 6.65
IR= 31.3
MaHR=2608
MwHR=17134
Disc time= 313

Those are your Milliamp hours (in red), that is the capacity of your pack... they are both 2608 Mah in size. You numbers seem a little low, you must have an older generation of nihms

-Frank

TyceCCSU@aol.com · #3 03-23-2002, 12:16 AM

You'de figure someone with the money to buy a turbo 35 to be able to figure that out.

Nutter · #4 03-23-2002, 01:17 AM

Uhh.. those numbers are both from the same pack, not 2..

As it says 2608mAh, and that is quite a bit less than 3000mAh (and you said they're the new 3000HV cells), you may need to cycle them a few times to get more accurate/better numbers.

-Nutter

FrankW · #5 03-23-2002, 01:48 AM

I was thinking about that too... but then I looked at the voltage numbers... and they seem really low for HVs.

-Frank

Grizzbob · #6 03-23-2002, 02:45 AM

Yeah, the voltage & IR numbers kinda look more like first generation Sanyo 3000's, don't they?....

FrankW · #7 03-23-2002, 02:56 AM

Yeah, that's what I though... Could be confising the 3000H cells for the 3000HV cells.

-Frank

thazy2 · #8 03-23-2002, 01:02 PM

These are new MATCHED pack from ProMatch which i'd purchased TWO weeks AGO. The readings are as fallow:

366 1.148

5.0 30 23

MWHR 3501

0.90 5000

PRO MATCH

I have been charging them off and on for about 10 to 15 times and the numbers hasnt improved. I did suspected that those numbers in red were THE numbers but they seem so far off. When the packs were assemble, great CARE was put inplaced to NOT over heat the cells. Each cell had less than 4 second of solder iron contract during the assembly process.

What should i do?

BTW you guys are right, those numbers r from the same pack. I must have been having one of those SENIOR MOMENT.

thank guys.......

FrankW · #9 03-23-2002, 02:14 PM

If the numbers at the top are from the same pack as the numbers you just gave (which were taken by promatch), then someone's way off somewhere. I'm thinking that maybe your voltage threshold if a smidgen too low, and so you pack is reading as peaked to early, repeatedly. The numbers at the top are very much like the numbers of first generation NiHm cells, but the bottom numbers seem extremely good. I'll have to check, but I don't even think my top of the line SMC cells are that high. Are you sure you didn't have another senior moment and put the wrong pack on the T35 by mistake? LOL, J/K. But yeah... this problem purplexes me. Sorry I can't be much help.

-Frank

Grizzbob · #10 03-23-2002, 03:01 PM

Hm, that brings up a question, exactly how are you charging them? Maybe you have the charger shutting off prematurely, so the cells aren't getting a full charge & in discharge they look like your results.....

thazy2 · #11 03-23-2002, 04:56 PM

Turbo 35 brand new one week old from Tower Hobbies
charged at 6amp.
peak detection at .04 (even though ProMatch says to set it at .05, I think thats too high. Tried it once and my pack got to 169 degrees when i hit it w/ a Raytec temp gun. On promatch's site, they mention to charge by temp to a 125 degrees.)

PAck 1:

Av= 6.57
@1v= 6.65
IR= 31.3
MaHR=2608
MwHR=17134
Disc time= 313

PAck 2:

Av= 6.54
@1v= 6.65
IR= 32.4
MaHR=2608
MwHR=17056
Disc time= 313

Attemp NUMBER 2 at 7.5 amp

PAck 1:

Av= 6.61
@1v= 6.69
IR= 30.7
MaHR=2708
MwHR=17899
Disc time= 325
peak v = 9.70
rel IR = 215

PAck 2:

Av= 6.64
@1v= 6.71
IR= 29.6
MaHR=2640
MwHR=17536
Disc time= 317
peak v= 9.71
rel IR = 213

7.5 amp attem number 2 in progress......

FrankW · #12 03-23-2002, 05:38 PM

SMC say .07 for 6 cell packs and .05 for 4 cell packs, and I haven't had any heat problems or low numbers. I'm still thinking you have older generaton cells on your hands. Everything points to it, the low average voltage and Mah, and the IR readings. I have an older generation 4 cell pack, it works great, but it doesn't match the numbers of my SMC pack. How long have you had your batts?

-Frank

Grizzbob · #13 03-24-2002, 01:12 AM

I agree, those temperatures sound a LOT like what first gen. NiMh's did....what color is the shrink wrap on them, mostly yellow with some light green or mostly darker green?

highroller · #14 03-25-2002, 05:30 AM

Try increasing the voltage to .09 (some use .12). With the newer Sanyo HV set the cutback higher than the first generation of Sanyo. Even new the numbers should be higher. Try another cycle but let the packs rest for 2 days, you should get more accurate results then (I don't use the 1st cycle info anymore, you don't see stable info until the 3rd or 4th cycle). Much of the info for the NiMh cells is old (voltage cutback settings, amp rates) some matchers haven't updated the charging info. SMC has about the most updated info on NiMH cells.

thazy2 · #15 03-25-2002, 01:39 PM

I emailed the company the first part of last week..... no responce!

emailed them again last friday night............ ring ring ring ring Monday morning.

Was I shocked...................I have been in the RC thing recreationally for along time. Never once has any company owner called me on issues that i was having. I was very impressed w/ that type of service. I was instructed to return both of the packs. If evidence indicates that the cells were faulty, all shipping expense will be REFUNDED and batteries replaced.

As for the color of the cells, they have 1 blue stipe and one yellow stripe on the the opposite sides. In between the stripes, it goes form blue- light blues- green- yellow. Overall all, the cells has blueish green in appearance. They all say sayno 3000 high voltage and high capacity.

what color should they be?

I did cycled the packs a few more times and the result was pretty much the same.

Grizzbob · #16 03-25-2002, 04:25 PM

Well, that sounds right for second gen. Sanyos(that's what my HV's look like, I've only seen other guys with the first gen. ones, & they were lighter in appearence), so maybe yours are just defective. It happens on occaision.....