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sandrock_22 Mechanic

Posts: 37 Join date: 2009-09-26 Location: Bur Dubai
 | Subject: li poly fully discharge Fri Apr 02, 2010 1:50 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


Posts: 1447 Join date: 2009-10-26 Location: Dubai
 | Subject: Re: li poly fully discharge Fri Apr 02, 2010 2:51 pm | |
| u gonna need to replace it.....  |
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J.Drift Lead Driver

Posts: 2630 Join date: 2009-06-07 Location: Abu Dhabi, UAE
 | Subject: Re: li poly fully discharge Fri Apr 02, 2010 3:04 pm | |
| you need to hot wire it with the same MAH lipo ask Reck he can guide you about hotwiring low volt lipo  |
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cathurga Mayhem Moderator


Posts: 1501 Join date: 2009-06-24 Location: Dubai
 | Subject: Re: li poly fully discharge Fri Apr 02, 2010 5:55 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
Posts: 431 Join date: 2009-06-25 Location: Dubai
 | Subject: Re: li poly fully discharge Fri Apr 02, 2010 8:32 pm | |
| 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 Mayhem Moderator


Posts: 1501 Join date: 2009-06-24 Location: Dubai
 | Subject: Re: li poly fully discharge Fri Apr 02, 2010 11:50 pm | |
| 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 Judge

Posts: 1140 Join date: 2009-06-08 Location: dxb
 | Subject: Re: li poly fully discharge Sat Apr 03, 2010 12:40 am | |
| your solution: NOVAK Smart Stop 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 Global Moderator

Posts: 1173 Join date: 2009-06-07 Location: Philippines
 | Subject: Re: li poly fully discharge Sat Apr 03, 2010 2:15 pm | |
| Might there have been a wrong connection to the buzzer? _________________ KIT: Tamiya TA05-3R ELECTRONICS: Novak GTB V.2, Novak Ballistic 3.5T, Futaba 3PM 2.4Ghz FASST Tx, Futaba R603FF FASST Rx, Yeah Racing SVP-0010MG SHELL: Tamiya Evo VI, Tamiya Evo X, HPI 350Z
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LaNcE Global Moderator

Posts: 2280 Join date: 2009-06-08 Location: Al Khan, Sharjah, UAE
 | Subject: Re: li poly fully discharge Sat Apr 03, 2010 10:53 pm | |
| 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..  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 Mechanic

Posts: 37 Join date: 2009-09-26 Location: Bur Dubai
 | Subject: Re: li poly fully discharge Sat Apr 03, 2010 11:27 pm | |
| 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 Support Moderator

Posts: 1023 Join date: 2009-07-01 Location: Al Ghusais
 | Subject: Re: li poly fully discharge Sat Apr 03, 2010 11:59 pm | |
| 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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