Fun, Learning, Friendship and Mutual Respect START  HERE


Unregistered
Go Back   HeliFreak > R/C Batteries and Charging Support > LiIon, LiPo, NiCd & NiMh General


LiIon, LiPo, NiCd & NiMh General General Battery Support


Reply
 
LinkBack Thread Tools Display Modes
Old 07-19-2013, 09:32 AM   #1 (permalink)
Registered Users
 
Posts: 1,318
 

Join Date: Nov 2012
Default Charging warm batteries

Hey guys

I recently purchased a 206b and it will actually be dropped off my USPS today!

But people have said that they have 2 sets of batteries ( usually for bigger helis ) and will fly one while charging the other at 3C at the field

Well, I have a trex 450 and 3 of my packs are almost brand new ( 3 flights each ) and the otheres have around 50+ flights

the newer packs get warm to the touch after flying, maybe staying hot for 10-15 min til room temp

my older packs stay hot for 30+ minutes, they are poofed and scorching.. i may have to get rid of them


But my question is, i've always been taught to not charge warm batteries?

Is it okay to land, pop it off and throw it on the charger??
__________________
Gaui X3 - V-Bar
Synergy E5 Super Stretch - V bar
Kentucky
Tek18x is offline        Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 07-19-2013, 10:03 AM   #2 (permalink)
Registered Users
 
My HF Map location
Join Date: Sep 2011
Default

I've always done mine that way and never had a problem. Not saying its right or wrong, just my experience. They come off the heli, depending on.weather, between 90-110
__________________
7HV
HeliJive 120
Quantum 4530
MKS 950/980
SK540
Bananaslug is offline        Reply With Quote Quick reply to this message
Old 07-19-2013, 10:19 AM   #3 (permalink)
Registered Users
 

Join Date: Aug 2007
Default

If the power system the batteries are running is well matched for the task, batteries should not be coming down excessively hot. 110F would be a good temp to shoot for if you had to put a number on it. We charge immediately after a flight usually, but that often depends on the outside air temp. Your battery temp on a standard 85F day might be only 105-110F. But on a 95F day, temps of 120F can start to show, and that's probably too hot to charge immediately after flight.

Just the way we do it (not backed-up by any scientific evidence...just experience over time), and we've have had pretty good results over the years using that philosophy.

(-: Dave
dahld is offline        Reply With Quote Quick reply to this message
Old 07-19-2013, 10:21 AM   #4 (permalink)
Registered Users
 
Posts: 1,318
Thread Starter Thread Starter
 

Join Date: Nov 2012
Default

Perfect!
Thanks guys
__________________
Gaui X3 - V-Bar
Synergy E5 Super Stretch - V bar
Kentucky
Tek18x is offline        Reply With Quote Quick reply to this message
Old 07-19-2013, 10:30 AM   #5 (permalink)
Registered Users
 
My HF Map location
Join Date: Jul 2011
Default

You certainly aren't going to hurt anything by letting them cool off.
__________________
Tarot 450 Pro V2 FBL - Blade mCP X - Blade 450 3D FBL
FuntanaS is offline        Reply With Quote Quick reply to this message
Old 07-19-2013, 11:47 AM   #6 (permalink)
Registered Users
 
Posts: 94
 

Join Date: Mar 2013
Default

I usually let mine cool off but the manual on the PL6 says that you don't have too.
__________________
Logo 800 xxtreme Logo 600SE Logo 550SE Blade 450X(collecting dust) Blade mCPX BL
MWRla is offline        Reply With Quote Quick reply to this message
Old 07-19-2013, 11:49 AM   #7 (permalink)
Registered Users
 
Posts: 43,724
 
My HF Map location
Join Date: May 2008
Default

I only use 2 stick packs when I fly my 700 back to back... so the minute I land I charge them at 3C. I've never had an issue and I am up to 70+ cycles and the packs are still like new.
__________________
"It's not just a hobby... it's a lifestyle" - Pete ϟ MINNESOTA!
Goblin 500 + 700 / SK540 / Jives / DX8 / Quantum / RJX servos / 306b / Deep cycles
Slyster is offline        Reply With Quote Quick reply to this message
Old 07-19-2013, 11:56 AM   #8 (permalink)
Registered Users
 
Posts: 5,865
 

Join Date: May 2012
Location: Southeastern Massachusetts
Default

Quote:
Originally Posted by FuntanaS View Post
You certainly aren't going to hurt anything by letting them cool off.
Except your total flight time.
__________________
SAB KRAKEN JIVE 120, BK CYCLIC, BK TAIL, PYRO 750-500, THUNDERBOLT, VBAR
GOBLIN BT SPORT HELIJIVE 120, BK CYCLIC, BK TAIL, XNOVA 4525 530, SWITCH, VBAR
GOBLIN 570 JIVE 120, MKS SERVOS, XNOVA , SWITCH MAINS, KBDD TAILS, VBAR
seefest is offline        Reply With Quote Quick reply to this message
Old 07-19-2013, 12:13 PM   #9 (permalink)
Registered Users
 
Posts: 680
 

Join Date: Jun 2011
Location: North Korea
Default

I let them cool for a few minutes
__________________
(***WARNING*** Stop Spamming Helifreak)
freedom is slavery.
Citizen 375
Fly it like you stole it
Money does bring happiness, never seen a sad person on a jet ski
redsoper is offline        Reply With Quote Quick reply to this message
Old 07-19-2013, 12:27 PM   #10 (permalink)
Registered Users
 
Posts: 4,860
 

Join Date: Jan 2009
Default

heat is your friend when it comes to charging

charge right when you land. warm to just hot, if they're scorching hot, you may have an issue.

science backed
__________________
XLPower 520 - Spirit
XK K110 - BLheli
TX: Fr-Sky X9 Lite
P.I.Engineer is offline        Reply With Quote Quick reply to this message
Old 07-19-2013, 01:06 PM   #11 (permalink)
Registered Users
 
Posts: 442
 

Join Date: Jun 2008
Default

i charge right after flight. always have without issue. packs are nice and cool by the time they are charged.
mikehunt is offline        Reply With Quote Quick reply to this message
Old 07-19-2013, 01:33 PM   #12 (permalink)
Registered Users
 

Join Date: Jun 2010
Default

Lipos are a lot different when it comes to charging. When charging nicads or nimh, they tend to warm up and get hot during charging. Lipos do not do that and will cool off during charging. Can't hurt to wait a bit before charging, but I typically don't wait.
__________________
Trex 700L Ikon 2 / Trex 700L Ikon V. 2 / SAB Goblin 500 Sport Ikon 2 / HD Cell 500 Ikon 2
It isn't about if, it is about when!
Solmanbandit is offline        Reply With Quote Quick reply to this message
Old 07-21-2013, 12:02 PM   #13 (permalink)
Registered Users
 

Join Date: Jun 2012
Default

Quote:
Originally Posted by jrod155 View Post
heat is your friend when it comes to charging

charge right when you land. warm to just hot, if they're scorching hot, you may have an issue.

science backed
Hey Jrod,
Anecdotes are good, science is great.
Where do recommend I get the nutty gritty?
__________________
But,how do they build the smoke into it?
kwreed is offline        Reply With Quote Quick reply to this message
Old 07-21-2013, 12:48 PM   #14 (permalink)
Registered Users
 
Posts: 1,510
 
My HF Map location
Join Date: Dec 2012
Default

Heat enhances chemical reaction, no doubt. Too much would not be a good thing. Conversly, cool inhibits (good for storage).
__________________
California Cabernet & Cuban Cigars
Warp 360 | HC-3SX | JIVE 80+ | HK 2520-1360 | MKS DS92A+/95i | Radix | DX8 | PL6 | GP 6S 1500
Mr-Mike is offline        Reply With Quote Quick reply to this message
Old 07-21-2013, 12:49 PM   #15 (permalink)
Registered Users
 
Posts: 1,502
 
My HF Map location
Join Date: Apr 2007
Default

RCgroups.com has some great discussions on this. I'm pretty sure they said it's fine.

I think the issue of them not coming down too hot is critical but also you NEVER want to be taking batteries off the charger hot. They should always have cooled down during the charge time.

Plus If it works for Dave Dahl and company I trust it. I wouldn't doubt he's seen more cycles himself than all of us reading this thread put together.
Lottomunch is offline        Reply With Quote Quick reply to this message
Old 07-21-2013, 02:27 PM   #16 (permalink)
Registered Users
 
My HF Map location
Join Date: Jan 2011
Default Re: Charging warm batteries

I have been charging immediately, while still warm. Mine come down around 110F, in 90 weather. I have only recently started field charging, though.

I have also put a fan in the car. May have it blowing on the packs while charging, will help cool them. Figure it can't hurt.

Sent using Tapatalk.
__________________
Gaui X5, iKon, Edge 100, CC BEC Pro.
Tarot 450 Pro FBL, Mini VBar, Ice Lite 50.
BL mCP X, Nano QX, FrSky Taranis, iCharger 308Duo.
RedOctobyr is offline        Reply With Quote Quick reply to this message
Reply




Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the HeliFreak forums, you must first register.
Please enter your desired user name, your REAL and WORKING email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself. Use a real email address or you will not be granted access to the site. Thank you.
Email Address:
Location
Where do you live? ie: Country, State, City or General Geographic Location please.
Name and Lastname
Enter name and last name here. (This information is not shown to the general public. Optional)
Helicopter #1
Enter Helicopter #1 type and equipment.
Helicopter #2
Enter Helicopter #2 type and equipment.
Helicopter #3
Enter Helicopter #3 type and equipment.
Helicopter #4
Enter Helicopter #4 type and equipment.

Log-in


Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On




Copyright © Website Acquisitions Inc. All rights reserved.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.

SEO by vBSEO 3.6.1