If you charge the Vaporshark rDNA 40 mod with the Qi wireless charging pad, and you use your mod in temperature control mod, be aware that it throws the DNA40's baseline coil measurement off a bit.
What happens is, when you don't use your mod for a while, the DNA40 chip waits for a while for everything to cool down - I believe 10 minutes. Then it assumes both the mod and the atomizer are roughly at the same temperature, and it quietly measures the coil's resistance again and its own temperature (using the onboard temperature sensor) to fine-tune the coil's cold resistance value. You want that to happen, it's good for the stability of the temperature control function.
Trouble is, if you put your rDNA40 on the wireless charging pad for an extended period of time, the mod warms up like a son of a bitch just under the pad, but the atomizer doesn't warm up as much. So if the DNA40 chip re-reads the coil at that moment, it sees the mod is really hot, and assumes the coil is too. But the coil is colder than the mod.
As a result, when you pick up your mod after charging on the pad for a long time, you'll see the displayed coil resistance seems to have "lost" 0.01 or 0.02 Ω. As you use, then leave your mod alone for a while, throughout the day, the resistance will return to normal.
It's not a huge drift, but my tests seem to show it's enough to skew the temperature measurement enough to make the chip hit TP sooner than it should. Nothing to write home about, but it's annoying.
Now what I do is use the wireless charging pad as a passthrough of sorts: I temporarily rest the mod on the pad while I vape, to top up the battery between tokes, when the chip won't go quiescent and silently recalibrate the coil. But for longer charges, I use the USB port.
What happens is, when you don't use your mod for a while, the DNA40 chip waits for a while for everything to cool down - I believe 10 minutes. Then it assumes both the mod and the atomizer are roughly at the same temperature, and it quietly measures the coil's resistance again and its own temperature (using the onboard temperature sensor) to fine-tune the coil's cold resistance value. You want that to happen, it's good for the stability of the temperature control function.
Trouble is, if you put your rDNA40 on the wireless charging pad for an extended period of time, the mod warms up like a son of a bitch just under the pad, but the atomizer doesn't warm up as much. So if the DNA40 chip re-reads the coil at that moment, it sees the mod is really hot, and assumes the coil is too. But the coil is colder than the mod.
As a result, when you pick up your mod after charging on the pad for a long time, you'll see the displayed coil resistance seems to have "lost" 0.01 or 0.02 Ω. As you use, then leave your mod alone for a while, throughout the day, the resistance will return to normal.
It's not a huge drift, but my tests seem to show it's enough to skew the temperature measurement enough to make the chip hit TP sooner than it should. Nothing to write home about, but it's annoying.
Now what I do is use the wireless charging pad as a passthrough of sorts: I temporarily rest the mod on the pad while I vape, to top up the battery between tokes, when the chip won't go quiescent and silently recalibrate the coil. But for longer charges, I use the USB port.
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