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Lowest "Safe" voltage for 2s? |
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(#1)
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RC-Monster Carbon Fiber
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Posts: 163
Join Date: Apr 2010
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Lowest "Safe" voltage for 2s? -
09.22.2010, 05:56 PM
Just wondering, what's the lowest "safe" voltage I should see on my 2s packs after a full run? (The voltage the charger sees when first plugged in) Thanks
EFlite Blade MSR Heli (Slightly modded) 1/16 BL E-revo 8-t 2.0, OS Vspec with Speed conrod Carbon Fiber Revo 3.3 Coversion Madness! |
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(#2)
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RC-Monster Dual Brushless
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Join Date: May 2005
Location: georgia
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09.22.2010, 06:02 PM
Most chargers will not even charge if the voltage is under 3.0v per cell, its in the programming
People here hate Nitro, I love it. I start it, run it about 50 ft from me and it dies, I go after it. Perfect exercise |
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(#3)
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RC-Monster Carbon Fiber
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09.22.2010, 06:20 PM
Ok, but what's a safe voltage for the batteries?
EFlite Blade MSR Heli (Slightly modded) 1/16 BL E-revo 8-t 2.0, OS Vspec with Speed conrod Carbon Fiber Revo 3.3 Coversion Madness! |
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(#4)
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Soldermaster Extraordinaire
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Location: Plymouth, MA, USA
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09.22.2010, 06:52 PM
Oh no! We're stuck in an endless loop!
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(#5)
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RC-Monster Carbon Fiber
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09.22.2010, 07:30 PM
So as long as it doesn't read 6.0V I'm fine?
EFlite Blade MSR Heli (Slightly modded) 1/16 BL E-revo 8-t 2.0, OS Vspec with Speed conrod Carbon Fiber Revo 3.3 Coversion Madness! |
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(#6)
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RC-Monster Dual Brushless
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Posts: 3,794
Join Date: May 2005
Location: georgia
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09.22.2010, 08:00 PM
Most here run 3.1V voltage on their cut-off and the batteries come back to 3.3 to 3.4v per cell as they cool down. I personally run my cut-off to 3.0 and charge when cool and have never had troubles with any good pack. My maxamps puffed within a year but my hyperions and flightpowers have lived over three years and still going strong
People here hate Nitro, I love it. I start it, run it about 50 ft from me and it dies, I go after it. Perfect exercise |
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(#7)
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Soldermaster Extraordinaire
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Join Date: Apr 2007
Location: Plymouth, MA, USA
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09.22.2010, 08:15 PM
Even if the cells are below 3V at rest, all is not necessarily lost. You can try charging them very slowly (like 1/10C, 0.5A for a 5K pack) and see if they retain any capacity. Bear in mind you should be watching the charge cycle closely in case the pack decides to puff.
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(#8)
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Fat Kid Engineering
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Location: Hot as Hell West Central Coast Florida
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09.22.2010, 08:29 PM
High qaulity packs, Hyperion, ThunderPower etc (excludeing MA) will come back just fine if cut off is at 3.0 per cell but still should be set at 3.1-3.2
The cheaper packs IE HobbyCity, Blue Lipos, Batman etc I would use a consevative cut off of 3.4-3.5 to be safe. These packs seem to really struggle getting back to where they need to be when drawn down to low. |
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(#9)
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RC-Monster Titanium
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Join Date: Aug 2008
Location: Twin Citys Mn
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09.22.2010, 09:08 PM
i cut at 3.2v thats what hyperion recomends
Quote:
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(#10)
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RC-Monster Carbon Fiber
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Posts: 163
Join Date: Apr 2010
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09.22.2010, 09:23 PM
Ok, pack was at 6.5v, so it should be fine? For some reason I had though below 7.0V was bad, no idea why...
EFlite Blade MSR Heli (Slightly modded) 1/16 BL E-revo 8-t 2.0, OS Vspec with Speed conrod Carbon Fiber Revo 3.3 Coversion Madness! |
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(#11)
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working on a brushless for my wheelchair.....
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Location: minnesnowta
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09.26.2010, 02:34 AM
Quote:
It's "Dr. _paralyzed_" actually. Not like with a PhD, but Doctor like in Dr. Pepper. |
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(#12)
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RC-Monster Carbon Fiber
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Join Date: Apr 2010
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09.26.2010, 04:41 PM
I think I need more sleep...
EFlite Blade MSR Heli (Slightly modded) 1/16 BL E-revo 8-t 2.0, OS Vspec with Speed conrod Carbon Fiber Revo 3.3 Coversion Madness! |
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(#13)
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Fat Kid Engineering
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Join Date: Jun 2009
Location: Hot as Hell West Central Coast Florida
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09.26.2010, 04:54 PM
Quote:
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(#14)
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RC-Monster Carbon Fiber
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Join Date: Apr 2010
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09.26.2010, 09:16 PM
Do you have a camera in my home? Haha
EFlite Blade MSR Heli (Slightly modded) 1/16 BL E-revo 8-t 2.0, OS Vspec with Speed conrod Carbon Fiber Revo 3.3 Coversion Madness! |
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