Hi, guys.
Looks like that N6 can not charging while powered off completely. So, it constantly drains about 0.1-0.13Ah and it equals charging power. My N6 charging for 13 hours and still has a 99%. Charging power does not change during last 9 hours and = 0.12-0.13Ah. FW 4.0
I have bumped into the Cayin N6 Engineer and have a quick chat about the charging problem you have mentioned previously.
First of all, he confirmed you observation is corrected. When you power off the N6 and start to charge the player, the moment you plug the micro USB cable into N6, the player will enter what we called semi-operated condition, That's why when you click at the power on button again, the player will turn on immediately, similar to a "wake-up" from sleep mode. The reason for this is to keep the Power Management chip and minimum System-on-chip in operation, this is the bare minimum operation we need to maintain in order to Manage the charging and feedback the battery capacity to the user. The Semi-operated condition will consume power, therefore electrical current become detectable.
Please be assure the the battery comes with a protection circuit, and the player has appropriate power management in place, this small current will not causing any harm to the battery even when you plug it in for long hours.
About 2 months. Very bad news (
Last 5 times it discharged to 0%. But I can not charge it to 100%.
So you regularly discharge your Lithium battery to zero and then attempt to charge them to 100% (well, 99% in your case)?
I hope you'll take my advice to adopt a short charging cycle practice with lithium-based batteries. Google on Lithium battery management or Memory effect of Lithium battery, you should find a lot of advise along similar line. I'll give a few quote to start with:
http://batterycare.net/en/guide.html
So fully discharging and charging the battery is completely useless and even harmful as we will see below. .....Full battery discharges (until laptop power shutdown, 0%) should be avoided, because this stresses the battery a lot and can even damage it. It's recommended to perform partial discharges to capacity levels of 20~30% and frequent charges, instead of performing a full discharging followed by a full charging.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
the depth of discharge (DoD) determines the cycle count of the battery. The smaller the discharge (low DoD), the longer the battery will last. If at all possible, avoid full discharges and charge the battery more often between uses. Partial discharge on Li-ion is fine. There is no memory and the battery does not need periodic full discharge cycles to prolong life.
The second article even stated that if in a table that if you go for 100% DoD (drain to 0%), then the life time of the battery (Discharge cycles) will be greatly shorten to 300 – 500, but if you adopt a 50% DoD, the battery can last 1,200 – 1,500 Discharge Cycles.
Sometimes I see a very useful bug: Line out and headphone out works at the same time. So I hear a music from my full-size headphone and from my iems. But now I can not do it purposely. Who knows how to do that?
Cayin basically adopt a single output policy with the DAPs, we believe this is the best performance and safest practice to the general public. When there are more then one output connected to the device, we pick the last inserted output as the active output and disabled the previous output device.
From what I recalled, this practice was adopted in one of the N6 firmware update, I can't recall which one in specific, so maybe there is an older version of N6 firmware that will support multiple output. I don't encourage user to stick with old version firmware because of this reason, but for testing purpose, there is no harm to give it a try.
