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sandrock_22
Driver
sandrock_22

Posts : 215
Join date : 2009-09-26
Location : Bur Dubai

li poly fully discharge Empty
PostSubject: li poly fully discharge   li poly fully discharge EmptyFri Apr 02, 2010 5:50 pm

hi good day to all i'm using li poly battery but last week my buzzer was malfunctioned and make my battery fully discharge when i charge my battery it always indicating low voltage. any suggestion to charge it back again or do i need to replaced this battery. thanx in advance
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paul
@dubdrift.com
@dubdrift.com
paul

Posts : 1462
Join date : 2009-10-26
Location : Dubai

li poly fully discharge Empty
PostSubject: Re: li poly fully discharge   li poly fully discharge EmptyFri Apr 02, 2010 6:51 pm

u gonna need to replace it..... thumb_down
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J.Drift
Moderator
J.Drift

Posts : 3123
Join date : 2009-06-08
Location : Abu Dhabi, UAE

li poly fully discharge Empty
PostSubject: Re: li poly fully discharge   li poly fully discharge EmptyFri Apr 02, 2010 7:04 pm

you need to hot wire it with the same MAH lipo ask Reck he can guide you about hotwiring low volt lipo
whistle
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cathurga
Lead Driver
cathurga

Posts : 1733
Join date : 2009-06-24
Location : Dubai

li poly fully discharge Empty
PostSubject: Re: li poly fully discharge   li poly fully discharge EmptyFri Apr 02, 2010 9:55 pm

would be safer to bin it.....completely discharging them changes the chemical composition, they could become unstable and inability to accept a charge could lead to fire...

As much as I know Reck is an experienced RC hobbyist, and this may have worked for him once, it does not mean it will work on all cells. Please be careful.

I have had 2 Yeah racing lipo's go below minimum charge, and both have survived to charge again, but I didnt let them go completely flat, they went down to about 5.4V combined...I keep a wary eye on them when charging..
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Duane
Chase Driver
avatar

Posts : 568
Join date : 2009-06-25
Location : Dubai

li poly fully discharge Empty
PostSubject: Re: li poly fully discharge   li poly fully discharge EmptySat Apr 03, 2010 12:32 am

The yeah racing voltage buzzers we are all using don't see very reliable, I am sure I have taken my lipos below the threshold without the buzzer sounding, anyone else having this problem ?

Duane
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cathurga
Lead Driver
cathurga

Posts : 1733
Join date : 2009-06-24
Location : Dubai

li poly fully discharge Empty
PostSubject: Re: li poly fully discharge   li poly fully discharge EmptySat Apr 03, 2010 3:50 am

Yeah, I have had the same, and the simple solution in the one that was doing it, was to spray its insides with electrical cleaner, seems ok now. I am not a fan of the buzzers though. I will try where possible to use the Spektrum Telemetry Rx on some cars, and the Hobbywing Lipo checker on the BL....
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chardiboi
Chase Driver
chardiboi

Posts : 1319
Join date : 2009-06-08
Location : dxb

li poly fully discharge Empty
PostSubject: Re: li poly fully discharge   li poly fully discharge EmptySat Apr 03, 2010 4:40 am

your solution:

NOVAK Smart Stop


li poly fully discharge NOV5470-450

have it on our tourer, works fine, connect power ends to the batt connector, connect esc to circuitry and from circuitry to your rx. . . and your good to go. . . a lot of wires on the kit though. warning blue light blinks when battery voltage is low, and auto shuts esc if battery has reach specified voltage cutt-off (6.6v i think). . .
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.j0sh
Chase Driver
.j0sh

Posts : 1174
Join date : 2009-06-07
Location : Philippines

li poly fully discharge Empty
PostSubject: Re: li poly fully discharge   li poly fully discharge EmptySat Apr 03, 2010 6:15 pm

Might there have been a wrong connection to the buzzer?
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LaNcE
Lead Driver
LaNcE

Posts : 2517
Join date : 2009-06-08
Location : Al Khan, Sharjah, UAE

li poly fully discharge Empty
PostSubject: Re: li poly fully discharge   li poly fully discharge EmptySun Apr 04, 2010 2:53 am

I've drained my Li-Po batts before as well.. But after "hot-wiring", they were revived.. Thanks to josh and reck.. I was able to use them for a long time before they went out..
One just won't charge anymore and one had swollen and had to be binned..

Try hot-wiring them. Just make sure you don't leave them unattended.. neutral

And where are you man? It's been a long while since you've gone to the meets..
Where are the other guys?
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sandrock_22
Driver
sandrock_22

Posts : 215
Join date : 2009-09-26
Location : Bur Dubai

li poly fully discharge Empty
PostSubject: Re: li poly fully discharge   li poly fully discharge EmptySun Apr 04, 2010 3:27 am

thanx to all of your advice
@ lance we have work every sat thats why we can't go for sat session. we played every fri in our nearby parking lot here in bur dubai.
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bong
Chase Driver
bong

Posts : 1024
Join date : 2009-07-02
Location : Al Ghusais

li poly fully discharge Empty
PostSubject: Re: li poly fully discharge   li poly fully discharge EmptySun Apr 04, 2010 3:59 am

we're going to al ain this friday, maybe you can join us and they can help you with your battery, while having fun at the same time
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PostSubject: Re: li poly fully discharge   li poly fully discharge Empty

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