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RX200 discharge?
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Michael Offline
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RX200 discharge?
Got a question for you folks. What's the safe lower limit for discharging cells? I always thought a cell was fully discharged when it reached 3.7V, but I noticed that if I let the RX200 run down to the point that it displays "Battery Low" the cells are around 3.2V when I check them. So in the meantime I've started changing the batteries when the little battery icon shows a bit under half full, which turns out to be around 3.7V remaining. 

If 3.7V really is the lower limit like I thought, then this is definitely worth noting about the RX200, and I'd advise anyone to change the batteries when it's displaying half full charge. I just wanted to ask you guys if this is something to be concerned about. 
19-04-2016 05:22 PM
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Don Offline
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RE: RX200 discharge?
Most cells manufacturers say do not go below 2.5V under load. This might well be 3.2V on no load. BTW the Wismec voltmeter is utterly useless, hopefully you measured the voltage with something else.

Personally, I'm not wild about going below 3V under load as there's basically nothing left at that point.

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19-04-2016 06:04 PM
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Eggza (07-29-2016)
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RE: RX200 discharge?
I usually change mine the same way, about half discharged. I just tested mine against a regular voltmeter and only one cell was off by only .01. So I must have a good one, cause my other rx200 is off by alot more.And the imbalance alert only works when you plug it in to the usb. I think it says that in the instruction book. Mine will start blinking below 3.5.
19-04-2016 09:24 PM
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paulS Offline
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RE: RX200 discharge?
The safe limit is also dependent on the mod you are using and the atomizer build. I tend to use VV only mods more than VV/VW mods or I use mechs. On mechs I swap when the vape gets weak and that's usually around 3.65 or so. On my potentiometer mods it is the same ... around 3.6. Now you need to check how many volts your are drawing when using a regulated mod. Don't bother with the watts. When you see you are drawing a lot of volts and your battery indicator drops below half - swap them out. I'm vaping now drawing 4.1 volts on my Cuboid. My atomizer is at .16 ohm. So once I feel the battery level is likely around 3.5 - 3.6 or so I'll swap out. But a lot of regulated mods will stop you anyway. If you batteries cannot handle the watts they just will not fire. So you are relatively safe with a RX200. As long as you are vaping at below 100 watts you can just wait till the mod no longer fires. It will not let you burn your batteries out.

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19-04-2016 09:47 PM
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Michael Offline
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RE: RX200 discharge?
(19-04-2016 06:04 PM)Don Wrote:  Most cells manufacturers say do not go below 2.5V under load. This might well be 3.2V on no load. BTW the Wismec voltmeter is utterly useless, hopefully you measured the voltage with something else.

Personally, I'm not wild about going below 3V under load as there's basically nothing left at that point.

Yeah I recall being warned about the RX200 voltmeter, I checked them against a multimeter and on my charger. 
19-04-2016 11:09 PM
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