Airsoft Canada
007 Licence to Shoot

Go Back   Airsoft Canada > Information Center > Newbie Tank
Home Forums Register Gallery FAQ Calendar
Retailers Community News/Info International Retailers IRC Today's Posts

Overcharging Lipo?

:

Newbie Tank

Reply
 
Thread Tools Search this Thread
Old September 8th, 2012, 01:44   #1
ljohns35
 
Join Date: Sep 2012
Overcharging Lipo?

I'm new to Lipo batteries so this may seem like a silly question. I have an Ares G36C and I use a 11.1 V Lipo battery. Within the past 4 months I've been through two of them. I'll charge them and then they just seem to die out on me :| Any advice anyone can give would be greatly appreciated.

P.S I do have a Lipo balance charger.
ljohns35 is offline   Reply With Quote
Old September 8th, 2012, 01:50   #2
R.I.T.Z
Crackers
 
Join Date: Mar 2009
Location: Barrie
are you pluging the ends in correctly?
is your charger/balancer made for the amount of cells your lipo has?
__________________
"You know what the chain of command is? It's the chain I go get and beat you with 'til ya understand who's in ruttin' command here."
R.I.T.Z is offline   Reply With Quote
Old September 8th, 2012, 01:58   #3
SuperHog
 
SuperHog's Avatar
 
Join Date: Jul 2011
Location: Toronto, Ontario
Your charger is probably giving you a full charge, but your gun is probably overdischarging them during use. If you discharge below 3V you will damage them.

Are you running a Lipo monitor?

I set mine to go off at 3.3V and stop at that point. Because of the extreme current drains your gun can pull with each shot, at 3.1V, a shot can cause the voltage to dip well below 3V.
SuperHog is offline   Reply With Quote
Old September 8th, 2012, 09:31   #4
MaciekA
 
MaciekA's Avatar
 
Join Date: Jun 2011
Location: Portland, Oregon, USA
You may be suffering from crappy batteries, crappy charger, or simply overworking your batteries (or all three). In my opinion LiPos below 2000mAh are rarely adequate for the velocity and trigger response demands that we're subjecting them to in this country, especially if you're attending games and not just plinking.

As SuperHog says, if you overdischarge these things (i.e. keep shooting once your battery is past the "voltage cliff") you'll perma-damage the battery. This is usually super obvious and easy to avoid even without a monitor, though if you're using a particularly weak LiPo you can sag into the dangerzone pretty easily. If you are actually running out of juice mid-game or sagging that badly, it's a strong sign you should seek a battery with a lot more mAh.

If you suffer from low-grade batteries and/or a low-grade charger unit and want to reboot your setup, get your next battery and charger from Hobbyking. Also, spend some time finding the absolute biggest battery you can find that will fit in your G36. It may be tricky to do this at 11.1V, so you may want to stepping down to a 7.4V battery, which will give you more C and more mAh for the same amount of physical space.

If you miss the snappy trigger and high rate of fire, you can always throw in a high torque motor and speed gears to compensate.

edit: I should mention that it's unlikely your batteries are dying from overcharging as long as your charger knows how many cells your battery has, and I assume you're charging them with a balance plug, (see picture below). If you are charging using this plug, even a budget charger shouldn't cause any issues. Most low end LiPo chargers I have seen, if they do one thing well, it's knowing when to stop.

__________________
"Mah check"

Now you know


Last edited by MaciekA; September 8th, 2012 at 09:36..
MaciekA is offline   Reply With Quote
Old September 8th, 2012, 10:29   #5
lurkingknight
 
Join Date: Jul 2011
Location: Ottawa
are you even using a balance charger?
lurkingknight is offline   Reply With Quote
Old September 8th, 2012, 10:52   #6
muddertrucker
 
Join Date: Apr 2011
Does your charger have a display? You can minitor the voltage and amperage of each cell as the battery is charging. If your charger is set too high then your battery will be overcharged. Overchaging a lipo battery is a big fire hazzard btw. Usualy it will get all puffy on you though.

I also think the problem is that you are discharging it too much.
muddertrucker is offline   Reply With Quote
Old September 8th, 2012, 16:19   #7
ljohns35
 
Join Date: Sep 2012
my lipo is a 3 cell, i do have a balance charger with display. I think i may be overcharging them. If so then would this be the reason they are dying on me? My charger has a preset charge for 3 cell batteries that i use
ljohns35 is offline   Reply With Quote
Old September 8th, 2012, 18:00   #8
ThunderCactus
Not Eye Safe
 
ThunderCactus's Avatar
 
Join Date: Feb 2007
Location: Calgary...now with less oil industry than eco-hipster Vancouver
if you were overcharging them, they would be on fire
__________________
Tamiya connectors suck.
Quote:
Originally Posted by swatt13 View Post
i never understood why the oil refinery had a brothel... i never see them at the refineries i work at this is bull!
ThunderCactus is offline   Reply With Quote
Old September 8th, 2012, 18:39   #9
ccyg8774
 
ccyg8774's Avatar
 
Join Date: Jun 2012
Location: Sackville, NB
it is very hard to overcharge with a balance charger with correct setup.
In contrast, overDIScharging is easy to occour if you are not using any lipo-alarm or lipo-monitor on your gun.
__________________
ccyg8774 is offline   Reply With Quote
Old September 8th, 2012, 19:39   #10
PrIeSt
takagari
 
PrIeSt's Avatar
 
Join Date: Sep 2008
Location: Anola(ish) MB
Send a message via MSN to PrIeSt Send a message via Skype™ to PrIeSt
You didnt answer the other big question?

How do you know when to change batteries in the gun? are you just running the lipo dead than switching batteries? Or do you use a lipo larm.

Draining a lipo bellow it's 3v per cell voltage will damage them. effectively killing the life of them.

Also go on ebay buy an IMAX B6AC charger for $30 and you will be much better off charging as well.
PrIeSt is offline   Reply With Quote
Old September 8th, 2012, 22:13   #11
muddertrucker
 
Join Date: Apr 2011
Quote:
Originally Posted by ljohns35 View Post
my lipo is a 3 cell, i do have a balance charger with display. I think i may be overcharging them. If so then would this be the reason they are dying on me? My charger has a preset charge for 3 cell batteries that i use
What is the preset value at? If it's a decent quality charger that preset value is adjustable and might be set too high.
muddertrucker is offline   Reply With Quote
Old September 9th, 2012, 00:07   #12
ljohns35
 
Join Date: Sep 2012
The preset for the lipo charge for 3 cell is 11.1v, I don't know if I'm actually draining them completely since I only play once a week and charge them right after. I bought a pretty damn expensive charger, its an imax dual power charger
ljohns35 is offline   Reply With Quote
Old September 9th, 2012, 00:08   #13
ljohns35
 
Join Date: Sep 2012
I think that maybe my gun is just killing the battery because the manual calls for a different voltage thats lower.
ljohns35 is offline   Reply With Quote
Old September 9th, 2012, 00:40   #14
MaciekA
 
MaciekA's Avatar
 
Join Date: Jun 2011
Location: Portland, Oregon, USA
Quote:
Originally Posted by ljohns35 View Post
I think that maybe my gun is just killing the battery because the manual calls for a different voltage thats lower.
Running a higher voltage is not your issue, unless you're experiencing charred trigger contacts or something similar.
__________________
"Mah check"

Now you know

MaciekA is offline   Reply With Quote
Old September 9th, 2012, 03:34   #15
ThunderCactus
Not Eye Safe
 
ThunderCactus's Avatar
 
Join Date: Feb 2007
Location: Calgary...now with less oil industry than eco-hipster Vancouver
if the motor has a bent armature, it would cause batteries to drain VERY quickly. However it also acts as a short, so you may be really close to causing over-current draw on your lipo, which would also cause it to catch on fire.

I had a VFC AK that would drain a 1400mah 8.4v stick in like 300 rounds, problem was a bad motor
__________________
Tamiya connectors suck.
Quote:
Originally Posted by swatt13 View Post
i never understood why the oil refinery had a brothel... i never see them at the refineries i work at this is bull!
ThunderCactus is offline   Reply With Quote
ReplyTop


Go Back   Airsoft Canada > Information Center > Newbie Tank

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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


Airsoft Canada
007 Licence to Shoot

All times are GMT -4. The time now is 03:01.


Powered by vBulletin® Version 3.8.10
Copyright ©2000 - 2017, vBulletin Solutions, Inc.