Mini-Z, Kyosho Mini-Z Racer, MR-03, MR-02, MA-010, Forums, News, Pictures, Parts, and Shop - Mini-ZRacer.com
Forums, Mini-Z, MiniZ, Kyosho Mini-Z, Kyosho MiniZ, Kyosho Mini-Z Racer
Mini-Z Hop-Ups, Mini-Z Parts, MiniZ Hop-Ups, MiniZ Parts, Kyosho Mini-Z Hop-Ups, Kyosho Mini-Z Parts, Kyosho MiniZ Hop-Ups, Kyosho MiniZ Parts, Kyosho Mini-Z Racer Hop-Ups, Racer Kyosho Mini-Z Parts
Old 2010.11.26, 08:34 PM   #1
rajiex
Registered User
 
rajiex's Avatar
 
Join Date: Jan 2010
Location: Staten Island, NY
Posts: 345
Can you bring back life to batteries.

How long do batteries hold their form. I have seven sets of batteries that no longer peak any where near their orginial packaging. Is there a way to refresh their charge. I haave some 990s that now only peak at 550. Are they dead? I am using a MAHA 9000, I have tried discharging/charging to get a balance set. Am I wasting my time and just buy new batteries. What is the life expectency of these batteries. I usually only race once a week.
__________________
Raj
Action RC2]
  • MR-03 94MM Ferrari Modena
  • MR-03 94MM Nissan 350Z
  • MR-03 90MM Ferrari 355
  • MR-03 98MM Ferrari 599
  • MR-02 98MM Mosler
  • MR-02 102MM Mazda 787B
  • MA-10 94 Chevy Corvette
  • MA-10 94 Toyota Supra (Drifter)
  • MF-015 Ferrari
rajiex is offline   Reply With Quote
Old 2010.11.26, 09:08 PM   #2
rensuchan
Returned to Mini-Z
 
rensuchan's Avatar
 
Join Date: Jan 2010
Location: Farmington, MI
Posts: 280
Send a message via MSN to rensuchan
I've been experimenting with refresh cycles and such as well over the past week since I just got my LaCrosse BC-700 on Monday.

How have you been running the refresh cycles? Are you using higher charge rates or trying to slow charge to refresh? I think the lower charge rates are better for trying to restore some life to the batteries.

But if they're down that much I'm not sure if there is a lot that can be done. Might be best to get some new sets and save those for practice batteries... I think I'll be doing the same myself soon
__________________
♥ かわいいもの大好き ♥

~My Cars~

RWD:
MR-015 iSeries (AM, present to girlfriend - fun)
MR-015 (AM, no pics, loaner to friends - fun)
MR-02 (AM, no pics, driven by girlfriend - racing)
MR-02 (ASF, pics of old body - racing)
MR-03VE PRO (LM mount - fast racing)
Formula 1 (ASF converted - racing)

AWD:
MA-010 (ASF conversion in progress, no pics - racing)
MA-010 (AM, on conversion list, no pics - drift/fun)

FWD:
MA-03F (An experiment...)

Last edited by rensuchan; 2010.11.26 at 09:09 PM. Reason: typo
rensuchan is offline   Reply With Quote
Old 2010.11.27, 07:28 AM   #3
bermbuster
GF Racing
 
bermbuster's Avatar
 
Join Date: Jul 2006
Location: Metro NYC
Posts: 2,959
Quote:
Originally Posted by rajiex View Post
How long do batteries hold their form. I have seven sets of batteries that no longer peak any where near their orginial packaging. Is there a way to refresh their charge. I haave some 990s that now only peak at 550. Are they dead? I am using a MAHA 9000, I have tried discharging/charging to get a balance set. Am I wasting my time and just buy new batteries. What is the life expectency of these batteries. I usually only race once a week.
while the mah is important you need to track voltages of each cell.

Do you have a high power discharger? You want to discharge at 3 amps....and one cell at a time not in a gang discharger....
(true amperage draw from a racing mini z) This will condition your cells like they are racing.

Now when you charge them( 1-3 amps...higher amps more punch...less life) see how much mah go in and what voltage they are peaking at 1.45 etc....try to group them....Do this a few times and see if they are getting better....staying the same or getting worse. reshuffle the matching of the cells. This way you can grade the cells and get rid of the non performing ones.
Remember your pack of 4 is only as good as the weakest cell......
__________________
GF Racing Team Driver
Dream Killr Racing.....Live the Dream
"The ultimate measure of a man is not where he stands in moments of comfort, but where he stands at times of challenge and controversy."
bermbuster is offline   Reply With Quote
Old 2010.11.27, 10:22 AM   #4
rensuchan
Returned to Mini-Z
 
rensuchan's Avatar
 
Join Date: Jan 2010
Location: Farmington, MI
Posts: 280
Send a message via MSN to rensuchan
Quote:
Originally Posted by bermbuster View Post
Do you have a high power discharger? You want to discharge at 3 amps....and one cell at a time not in a gang discharger....
(true amperage draw from a racing mini z) This will condition your cells like they are racing.
Do you have a discharger recommendation for this?
__________________
♥ かわいいもの大好き ♥

~My Cars~

RWD:
MR-015 iSeries (AM, present to girlfriend - fun)
MR-015 (AM, no pics, loaner to friends - fun)
MR-02 (AM, no pics, driven by girlfriend - racing)
MR-02 (ASF, pics of old body - racing)
MR-03VE PRO (LM mount - fast racing)
Formula 1 (ASF converted - racing)

AWD:
MA-010 (ASF conversion in progress, no pics - racing)
MA-010 (AM, on conversion list, no pics - drift/fun)

FWD:
MA-03F (An experiment...)
rensuchan is offline   Reply With Quote
Old 2010.11.27, 10:28 AM   #5
bermbuster
GF Racing
 
bermbuster's Avatar
 
Join Date: Jul 2006
Location: Metro NYC
Posts: 2,959
Quote:
Originally Posted by rensuchan View Post
Do you have a discharger recommendation for this?
a much more sub c or a novak smart tray.....
they were developed for sub c (1/10th) technology. They adjust (size) and will work awesome with aaa cells. You can find them used really cheap.
New ones are usually discounted as well....
__________________
GF Racing Team Driver
Dream Killr Racing.....Live the Dream
"The ultimate measure of a man is not where he stands in moments of comfort, but where he stands at times of challenge and controversy."
bermbuster is offline   Reply With Quote
Old 2010.11.27, 11:27 AM   #6
rajiex
Registered User
 
rajiex's Avatar
 
Join Date: Jan 2010
Location: Staten Island, NY
Posts: 345
Now I am more confused. Do you match batteries by peak voltage or MAH?
__________________
Raj
Action RC2]
  • MR-03 94MM Ferrari Modena
  • MR-03 94MM Nissan 350Z
  • MR-03 90MM Ferrari 355
  • MR-03 98MM Ferrari 599
  • MR-02 98MM Mosler
  • MR-02 102MM Mazda 787B
  • MA-10 94 Chevy Corvette
  • MA-10 94 Toyota Supra (Drifter)
  • MF-015 Ferrari
rajiex is offline   Reply With Quote
Old 2010.11.28, 06:57 AM   #7
bermbuster
GF Racing
 
bermbuster's Avatar
 
Join Date: Jul 2006
Location: Metro NYC
Posts: 2,959
Quote:
Originally Posted by rajiex View Post
Now I am more confused. Do you match batteries by peak voltage or MAH?
both....
higher voltage packs = more speed
higher mah packs= more runtime.

After a 5 minute main in stock you may use 200mah of power.
Your cells are 900(roughly). Technically you can get 3-5 minite races from one pack. The only thing with nimh batteries the voltage drops off as the pack discharges.....By having matched packs charged....then re-peaked before
a race will ensure the highest voltage with the power to last for 5 minutes or more of racing.

The idea of matching then utilizing a charging/discharging program
will ensure your batteries are flowing the most voltage and current to make your mini z perform its best.
__________________
GF Racing Team Driver
Dream Killr Racing.....Live the Dream
"The ultimate measure of a man is not where he stands in moments of comfort, but where he stands at times of challenge and controversy."
bermbuster is offline   Reply With Quote
Old 2010.11.28, 09:35 AM   #8
rajiex
Registered User
 
rajiex's Avatar
 
Join Date: Jan 2010
Location: Staten Island, NY
Posts: 345
Quote:
Originally Posted by bermbuster View Post
both....
higher voltage packs = more speed
higher mah packs= more runtime.

The idea of matching then utilizing a charging/discharging program
will ensure your batteries are flowing the most voltage and current to make your mini z perform its best.
What is a good baseline to measure by. What is voltage is considered for practice and rack packs.
__________________
Raj
Action RC2]
  • MR-03 94MM Ferrari Modena
  • MR-03 94MM Nissan 350Z
  • MR-03 90MM Ferrari 355
  • MR-03 98MM Ferrari 599
  • MR-02 98MM Mosler
  • MR-02 102MM Mazda 787B
  • MA-10 94 Chevy Corvette
  • MA-10 94 Toyota Supra (Drifter)
  • MF-015 Ferrari
rajiex is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Why discharge batteries ? sc0627 Parts and Hop-ups 4 2003.02.11 10:14 AM
cell phone batteries? gr7hug Mini RC 1 2002.03.17 11:46 AM
Charging NiMH batteries. What charger is safe for it? i-WERKS Setups 25 2002.02.16 04:44 PM
Racing Batteries Kinesthesia Setups 4 2001.12.27 05:39 PM
Car goes out of control with new batteries Unistar Parts and Hop-ups 6 2001.12.25 06:59 PM


All times are GMT -5. The time now is 06:32 AM.


Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2011 Mini-ZRacer.com
Mini Inferno Sale - Up to $85 Instant Savings!
Micro-T Hop-Ups
RC18R, M18, Micro RS4, Mini-LST, TamTech-Gear, Minizilla, RC18T, RC18B, RC18MT
shop.tinyrc.com Products

more»
Tiny RC Community News
[03/22/17] MZR was on vacation, didn't... : All kidding aside, the host experienced a bit of a server meltdown last week and efforts to restore the site to a new server took longer than anticipated. The current server is temporary until - more»
[11/25/15] Did You Hear? Our Black... : Hey Racers,
We're getting started a bit early with our Black Friday sale this year.  Generally we're not supporters of retailers opening early on Thanksgiving, but in our case, we're - more»
[06/30/15] shop.tinyrc.com: Have You... : Hey All! Just a quick reminder to everyone that we post all of our shop.tinyrc.com Newletters here on the MZR Forum. If for some reason you miss them in your email inbox, you can always see the - more»
Mini-Z, Mini-Z Racer, MR-02, MA-010
M18, M18T, RC18T, Mini-LST, Mini-T, Micro RS4, XRay, 1/18, 18th scale
XMODS, XMOD, Micro Flight, ZipZaps, ZipZaps SE, Bit Char-G, MicroSizers, TTTT, Plantraco Desktop Rover, SuperSlicks, Digi Q
Mini Inferno, Mini Inferno ST, half EIGHT, 1/16, 16th scale
Epoch, Indoor Racer, 1/43, 43rd scale
E-Savage, eSavage, eZilla, e-Zilla, HPI
Robots, Bots, Bipeds, Wheeled, Manoi, Roomba, NXT, Lego, Hacking
Crawling, Crawlers, Micro, RC, Losi Mini-Rock Crawler, Duratrax Cliff Climber
Kyosho Minium, Caliber 120, Minium Forums
Mini-Z Hop-Ups, Mini-Z Parts, Mini Inferno Hop-Ups, Mini Inferno Parts, M18 Hop-Ups, M18 Parts