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eztuner12
2009.03.21, 11:47 PM
Hi Gentlemen.
I was searching for some Orion 900s HV batty, but in my way I found some R1wurks 900mah Competition AAA Batteries.
Any of you have tried these batteries, that could provide a feedback, perchance a review and comparison to the Orion’s 900 HV?
I am sure some of us will indeed appreciate any comment about these batty.
Advanced thaxxx…:)
Cheers

EMU
2009.03.22, 03:00 AM
I use my Orion 900 for practice, R1Wurks 990 for the first 2 qualifiers, and TRP 900 for the 3rd round and mains. I find that the TRP cells have a little less punch, but more top end. I only use comm drops for the 3rd round of qualifying and mains.

The R1Wurks feel like they drop off less through the run compared to the Orion... but I find that after 2 runs with them, they start to run flat and dont have as much punch. The Orions I can run 3 or 4 runs and have less of that effect, which is why I use them for practice. In the end, I do prefer the R1Wurks, there is more speed. My TRP cells are the newest ones, and I am impressed with their speed, seems faster than the R1Wurks, but wish that they had a little more punch for 70t classes. I think they are great cells for slightly faster motors like Speedy 07 and ATM stock... even modified motors.

My favorite overall cell right now is the R1Wurks 990. When cycling (1A charge/1A discharge), the capacity is about 800mah on average for me with all 3 types of cells on my Maha MH-C9000.

eztuner12
2009.03.22, 12:04 PM
Thanks so much EMU.
Two question; how can I know when my Maha C-9000 is charging at “1A” or discharging at “1A”, can “A” be converted into MAH, perhaps an equivalency chart from A to mah or a formula?
I usually discharge at 300mah and charge at 500mah my Orion 900s cells with the Maha C-9000 charger, and discharge at 250mah & charge at 500mah with the Lacrosse BC-900. Is that OK?
I really appreciate your response
Advanced thaxxx…
Cheers

EMU
2009.03.22, 12:07 PM
1A = 1000mA

I wish that the Maha would discharge at a higher rate... 2-3A would be nice. You want to excercise the cell, and see what the discharge numbers are at a higher load. Especially if you are using a modified motor. For using a 70t motor, 1A should be fine...

I like to do cycling with the LaCrosse, but battery testing and sorting with the Maha since it has a higher discharge rate, and doesnt seem to overheat the cells when charging over 700mA like the Lacrosse.

Felix2010
2009.03.23, 02:19 AM
I usually discharge at 300mah and charge at 500mah my Orion 900s cells with the Maha C-9000 charger, and discharge at 250mah & charge at 500mah with the Lacrosse BC-900. Is that OK?
I really appreciate your response
Advanced thaxxx…
Cheers

I own a set of R1wurks matched Pro Competition Orion 900HV cells I bought some time ago. They're still going strong. IMO these cells are worth the money.:)

A matched pack is nice, you don't have to worry about a "weak-link" cell in the pack ruining a run for you. I have to buy 2-3 packs of non-matched batts usually to make a good matched pack.
R1wurks uses better chargers & software specific to matching cells (I believe they use Competition Electronics Turbo 35 GFX, one of the best chargers available.)

For charging the Orion 900HV cells, you can go much higher than 500mah (0.5Amp). I charge mine anywheres from 900mah (1C) up to 2A (2000mah), sometimes even a bit higher(I use my MuchMore Cell Master for high Amp charging & discharging). The Orion900's are excellent cells fer sure.:D

For discharging, as EMU said I'd go for a rate that gives the cells a discharge similar to what they encounter during a race: 2-3A is optimal. The MAHA having only a 1000mah (1A) max discharge rate, you should consider getting a charger with a higher-rate discharge mode. If you only have the MAHA (A great unit BTW, I own one myself) consider a discharge tray like Atomic's Ver.II discharge tray. I read it discharges @2.7A.
For discharging and cell-equalizing voltage-Cutoff should be between 0.7v-0.9v/cell.

Hope this helps :)

eztuner12
2009.03.23, 03:19 AM
Thanks… Eugene & Felix,
For what I read from you two, I was totally out of proportion in both, Charging and Discharging.
So I will definitely go by your recommendations in line to achieve the best performance from my Orion’s and am considering getting a couple of matched R1s, even if I don’t race in competitions, but really like to squeeze more juice out of my Mini-z 4wd:eek:.
Again thanks both for your time & the valuable info:):).
Cheers

R1WURKS
2009.03.26, 09:30 PM
felix, we dont use gfx35 we use the TURBO MATCHER 8

http://img.photobucket.com/albums/v357/teban/TM8.jpg

eztuner12
2009.03.26, 09:44 PM
felix, we dont use gfx35 we use the TURBO MATCHER 8
<a href="http://smg.photobucket.com/albums/v357/teban/?action=view&current=TM8.jpg" target="_blank"><img src="http://img.photobucket.com/albums/v357/teban/TM8.jpg" border="0" alt="Photobucket"></a>
Hello R1WURKS.
Good to hear from someone from R1W, I have a Q. but please don’t take it wrong. Is not my intention to offend you, just want to make sure of my money worth and purchase something good.
Since you sell matched sets of batteries, don’t you throw in sets the un-matched and sell them, and I will get a set with high differences in mAh, or you try to match them too as much as posible??
Thank you for your comprehension and reply.
Cheers

R1WURKS
2009.03.26, 10:08 PM
We don't re package bad cells, we throw them away.

EMU
2009.03.26, 10:18 PM
R1wurks, what makes the cut for the competition matched packs? Where do you draw the line when you test them? I have not tried the matched sets yet, but am very pleased with the unmatched sets consistancy. I have no bad cells out of 5 packs, although I do have a set of cells that is noticably weaker than the other 4 packs. I group them together by capacity, as it is difficult to rate them by the voltage/discharge with my equipment. I find that this works pretty well, although I do feel that it is not complete.

Also, do you Zap your cells? What is your opinion about battery Zapping?

eztuner12
2009.03.27, 12:15 AM
Hi EMU
Perhaps you are making the same question that I was trying to make, certainly better refaced not so straight forward as I.
Thru your comment I have gotten a much better response than “We don't re package bad cells, we throw them away.”
Thanks to both, R1WURKS and Emu.
Cheers;)

Felix2010
2009.03.27, 10:03 PM
I'd like a TurboMatcher 8 for myself:D I'd say that's about as good as it gets for cell matching IMO. At $1800 it is one of the most expensive for sure.:cool:

R1WURKS
2009.03.29, 09:36 PM
EMU, the numbers are not set in stone, it depends on the temperature we are matching the batteries. when we match hundreds of cells at a time we always see a big group of cells gathering around the same internal resistance, if the cells are not within plus or minus 2 or 3 of that big group we isolate those & just match within the big group.

1FASWGN
2009.04.12, 09:50 PM
What Kind of numbers will i see on a typical matched pack?
and what are your matching parameters?

eztuner12
2009.05.01, 10:34 PM
I use my Orion 900 for practice, R1Wurks 990 for the first 2 qualifiers, and TRP 900 for the 3rd round and mains. I find that the TRP cells have a little less punch, but more top end. I only use comm drops for the 3rd round of qualifying and mains.

The R1Wurks feel like they drop off less through the run compared to the Orion... but I find that after 2 runs with them, they start to run flat and dont have as much punch. The Orions I can run 3 or 4 runs and have less of that effect, which is why I use them for practice. In the end, I do prefer the R1Wurks, there is more speed. My TRP cells are the newest ones, and I am impressed with their speed, seems faster than the R1Wurks, but wish that they had a little more punch for 70t classes. I think they are great cells for slightly faster motors like Speedy 07 and ATM stock... even modified motors.

My favorite overall cell right now is the R1Wurks 990. When cycling (1A charge/1A discharge), the capacity is about 800mah on average for me with all 3 types of cells on my Maha MH-C9000.

Hi Eugene
I followed your suggestion about the R1W 990HV and acquired a couple of sets, they should be arriving any time next week:).

Fortunately, we postponed our trip to Pittsburgh for two weeks, so soon I will post my feedback on them, compared to the Orion 900s HV.

Any specific recommendation, regarding the break-in method on these R1W 990HV betteries?
Thx!
Cheers;)

EMU
2009.05.02, 01:54 AM
I allways like to charge up slow the first time... then run them like normal, until they dump. Discharge, then charge slow again. After 2 or three cycles, charge normal. Compare the capacity on the charge each time.

eztuner12
2009.05.02, 12:10 PM
I allways like to charge up slow the first time... then run them like normal, until they dump. Discharge, then charge slow again. After 2 or three cycles, charge normal. Compare the capacity on the charge each time.

Thx 4 da advice!
chargeing slow would be 100ma, 200ma, 300ma:confused:
Thx again.:)
Cheers

alanfujii
2009.11.01, 10:36 AM
I have a MAHA charger and have the 990 AAA batteries through the break-in mode. I hear this step called "matching". What exactly am I matching? The Mah rating or the volts?

eztuner12
2009.11.01, 01:07 PM
I personally go by the Mah rate as close as possible @ 5 %
About the 900 R1WURKS they indeed are very close in Mah as the come but they still not better on longevity as the Orions. They do begin with lots of power r 4 the about 1min then the power drops and become very even until the end.
Cheers:)

machgo5go
2010.01.20, 07:30 AM
Hello all,
I am a newbie back to Mini Z from MR-01 days.
I just bought sets of TRP's rp900 AAA's & using my ancient Tekin BC110L linear charger conjuntion with a 12 DC power supply. I am charging these 4 batteries in a PN Racing Charger Tray so my question is : when I charge these 4 batteries at 1 Amp, does it peaks out at around 6.25V? TKS!

EMU
2010.01.20, 04:19 PM
I usually peak around 6.7-6.9v with the TRP900.

Felix2010
2010.01.20, 05:04 PM
Peak volts will and should always be above 6.0v per pack. 6.2-6.4v per 4 cells in series is perfectly normal using a High-end RC charger like Duratrax ICE, Teamcheckpoint TC1030, MuchMore Cell Master, (And there are many more). Linear charging I've read is really good for Nimh - Even an "ancient" Tekin BC110L if it charges in Linear Mode.:)

Like EMU said, I have had some packs peak very,very high like 6.7+Volts. I am not sure what causes this, but I've had it happen.

EMU
2010.01.20, 07:07 PM
When you charge at higher amperage, the cells will peak higher as well. I have a few packs that will peak at 7-7.2v... The cells are fast when they are warm, so try to time the charge so you use them while they are still warm from the charge. You dont want them hot, but warm...

dvsstrike
2010.03.29, 08:28 AM
nuke em high i have charged these cells at 4 amps already with no issue. i would not recomend it. they come off scorching hot but are real fast and punchy.i use a novak millenium at 4mv peak detection on linear charge or i use my lrp pulsar at 5mv peak detection on linear.like i said they come off hot.and they peak high. if you try it keep on eye on them..


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