RunRyder RC
 6  Topic Subscribe
WATCH
 1 page 1105 views POST REPLY
HelicopterMain Discussion › I/R internal resistance how do i know if my lipos are good
11-09-2013 06:16 PM  4 years agoPost 1
wc_wickedclown (RIP)

rrProfessor

long beach calif

My Posts: All  Forum  Topic

some people tried to help me understand but i still dont get it.

my 6s have 1 1 2 2 2 2 someone said the lower the better
now my 3s tp lipos were 556 i had them replaced now they read 555

my rx pack 2s in my 700 reads 17 17 when its charged
when storage charged it reads 10 10
i am confused whats good numbers and what are bad.

Watch at YouTube

Insha Allah made in america

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
11-09-2013 07:36 PM  4 years agoPost 2
mglenn310

rrApprentice

Tulsa ok

My Posts: All  Forum  Topic

You want low numbers 1-1-1-2-2-2 is fine 5-5-6 it all depends on if there new or old and how well you take care of them. just remember the numbers you want are low side...what you dont want is say 222888. as long as there with in 1 or 2 other the other your good.. Other then that rock on with the lipo's bro good luck

FAA # FA3XEYPKAC

PM  EMAIL  GALLERY  Attn:RR  Quote
11-09-2013 07:48 PM  4 years agoPost 3
Rob43

rrKey Veteran

Midland, MI USA

My Posts: All  Forum  Topic

I also don't know enough to be providing advice, but I will share that I mainly use it as a reference. If I use the same charger to measure it when they are new, I can watch for an increase. The IR also changes with temp and state of charge, so it's important to check them under consistent conditions to get meaningful information from IR.

Rob

PM  EMAIL  Attn:RR  Quote
11-09-2013 08:30 PM  4 years agoPost 4
mglenn310

rrApprentice

Tulsa ok

My Posts: All  Forum  Topic

+1 Rob43 very very good advice

FAA # FA3XEYPKAC

PM  EMAIL  GALLERY  Attn:RR  Quote
11-09-2013 08:35 PM  4 years agoPost 5
wc_wickedclown (RIP)

rrProfessor

long beach calif

My Posts: All  Forum  Topic

mglenn310
You want low numbers 1-1-1-2-2-2 is fine 5-5-6 it all depends on if there new or old and how well you take care of them. just remember the numbers you want are low side...what you dont want is say 222888. as long as there with in 1 or 2 other the other your good.. Other then that rock on with the lipo's bro good luck
thank you

is there a way to load test a lipo to see if it still has good power

Insha Allah made in america

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
11-09-2013 08:37 PM  4 years agoPost 6
rcflyerheli

rrKey Veteran

Granbury, TX USA

My Posts: All  Forum  Topic

Also, the lower the C rating on the packs, the higher the IR will be. 5-5-6 on a 20C or 30C pack wouldn't be bad.

Goblin 700, Trex 700DFC, Gaui X7, Logo 690SX, Logo 600SX; Trex 470 Trex 500
Amain Team Rep

PM  EMAIL  GALLERY  Attn:RR  Quote
11-10-2013 03:41 AM  4 years agoPost 7
mglenn310

rrApprentice

Tulsa ok

My Posts: All  Forum  Topic

wc_wickedclown Not that i know of other then to feel it in the air but battery's taken care of should last more then 200 flights.

FAA # FA3XEYPKAC

PM  EMAIL  GALLERY  Attn:RR  Quote
11-10-2013 05:21 AM  4 years agoPost 8
es1co2bar3

rrKey Veteran

winnetka california

My Posts: All  Forum  Topic

Some pilot over run the pack then charged them back
With unbalanced cell, when they do this they're in
The mode of burning down somthing. A house maybe!,.

I was waiting on some honey but there aren't no Queen bee,

PM  EMAIL  GALLERY  Attn:RR  Quote
11-10-2013 06:48 AM  4 years agoPost 9
wc_wickedclown (RIP)

rrProfessor

long beach calif

My Posts: All  Forum  Topic

mglenn310
wc_wickedclown Not that i know of other then to feel it in the air but battery's taken care of should last more then 200 flights.
thanks my problem was my castle esc went back to default settings some how .
plenty of power now.

my thunder power lipos were under warranty got them both upgrade from 65c to 70c,

still don't know what happened to the escbut its all good now
ready for some 3d

thanks all for helping me understand i/r

Watch at YouTube

Insha Allah made in america

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
11-10-2013 03:52 PM  4 years agoPost 10
wc_wickedclown (RIP)

rrProfessor

long beach calif

My Posts: All  Forum  Topic

es1co2bar3
Some pilot over run the pack then charged them back
With unbalanced cell, when they do this they're in
The mode of burning down somthing. A house maybe!,.
good question

if a pack gets drained below what is recommended to recharge the lipo.

what if the lipo did chargeback properly reading the i/r would show you if the lipo is actually damaged so a person does not burn down anything.

Insha Allah made in america

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
11-10-2013 04:26 PM  4 years agoPost 11
mglenn310

rrApprentice

Tulsa ok

My Posts: All  Forum  Topic

I balance every 3rd charge and have had no issues over my time flying....Ir might show you a cell that is different but not going to point to a problem...

FAA # FA3XEYPKAC

PM  EMAIL  GALLERY  Attn:RR  Quote
11-10-2013 05:47 PM  4 years agoPost 12
fenderstrat

rrProfessor

Aston,Pa

My Posts: All  Forum  Topic

IR can be used mainly as a guideline to monitor the health of batteries over their liftime.Once you get a baseline reading when they are new,you can see if it is increasing as the battery ages.It will also let you know if one cell is not aging in line with others.

On a side note,I'm not sure if having something on the end of the antenna is a good idea or not.Not sure if I would want something that could possibly block signal on there

Compass helis Support Team
PerformancePlusRC field rep
Mini Titan/SE
TEAM KBDD

PM  EMAIL  GALLERY  Attn:RR  Quote
11-10-2013 07:55 PM  4 years agoPost 13
wc_wickedclown (RIP)

rrProfessor

long beach calif

My Posts: All  Forum  Topic

On a side note,I'm not sure if having something on the end of the antenna is a good idea or not.Not sure if I would want something that could possibly block signal on there
i have a jack in the box ball on my antenna he has been there for years he's me copilot lol

and thank you for the information brother

Insha Allah made in america

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
11-10-2013 07:57 PM  4 years agoPost 14
wc_wickedclown (RIP)

rrProfessor

long beach calif

My Posts: All  Forum  Topic

thank you all for the useful information

been in this hobby 3 years and never had a clue about the i/r

Insha Allah made in america

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
11-10-2013 10:56 PM  4 years agoPost 15
kingmeow

rrApprentice

The Garden State, US

My Posts: All  Forum  Topic

That's a cool Jack In The Box! I have one where he's wearing a scarf and ear muffs and another one where he's an Elf, pointy ears and all. I would love to have one like yours where he has a snowman top hat.

He too sits on my Tx as a co-pilot! I'm on the east coast so I have Jack shipped to me from the west coast.

PM  EMAIL  Attn:RR  Quote
11-10-2013 11:50 PM  4 years agoPost 16
Heli_Splatter

rrElite Veteran

USA

My Posts: All  Forum  Topic

I use parallel boards to charge many of my batteries. When you have a bad cell or one with high IR, things can get out of wack pretty fast. You need to monitor all the cell voltages. When you see real differences, you should not parallel charge them.

PM  EMAIL  GALLERY  Attn:RR  Quote
11-11-2013 01:53 AM  4 years agoPost 17
jschenck

rrProfessor

La Vista, NE.

My Posts: All  Forum  Topic

The smaller the pack the higher th I/R

5-6 is prety good for a 2200 size but my 5300 are in the 1-2 range. My blade 130 packs have ir values like 40-50 per cell and the little stick packs for the nanoCPx are 70+ as i remember.

Measure them frequently and use changes in ir to tell you when the pack is getting higher resistance which equals lower performance.

Also a brand new pack is higer ir until it's broken in. That's why they get more powerful after a few cycles.

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 1105 views POST REPLY
HelicopterMain Discussion › I/R internal resistance how do i know if my lipos are good
 Print TOPIC  Make Suggestion 

 6  Topic Subscribe

Sunday, May 27 - 1:04 pm - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online