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-   -   Lowest "Safe" voltage for 2s? (https://www.rc-monster.com/forum/showthread.php?t=28148)

Muggydude 09.22.2010 05:56 PM

Lowest "Safe" voltage for 2s?
 
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

crazyjr 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

Muggydude 09.22.2010 06:20 PM

Ok, but what's a safe voltage for the batteries?

What's_nitro? 09.22.2010 06:52 PM

Oh no! We're stuck in an endless loop! :lol:

Muggydude 09.22.2010 07:30 PM

So as long as it doesn't read 6.0V I'm fine?

crazyjr 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

What's_nitro? 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.

Bondonutz 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.

Semi Pro 09.22.2010 09:08 PM

i cut at 3.2v thats what hyperion recomends

Muggydude 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...

_paralyzed_ 09.26.2010 02:34 AM

Quote:

Originally Posted by Muggydude (Post 381197)
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...

yes, it's fine. I also have no idea why you thought that.

Muggydude 09.26.2010 04:41 PM

I think I need more sleep...

Bondonutz 09.26.2010 04:54 PM

1 Attachment(s)
Quote:

Originally Posted by Muggydude (Post 381681)
I think I need more sleep...

Yeah, you look like shiz ?

Muggydude 09.26.2010 09:16 PM

Do you have a camera in my home? Haha


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