Sylphyo - recovering from deep discharge state questions
I've read in other posts about the deep discharge state a Sylphyo battery can get in if it gets low on charge. I have a couple of clarifying questions :)
- I read it has to charge slowly over a period of 48 hours. Does that time have to be uninterrupted? In other words, could I charge for, say, 24 hours, not charge for whatever reason for 1 hour, then charge for 24 more hours? Would that still result in getting out of the deep discharge state?
- Must I use the 5v 2 amp charger that came with Sylphyo or would a normal phone charge work as well?
- Does the Sylphyo, when in deep discharge state come to life before the 48 hours is up?
Thanks so much for your reply. I think a clarification of this process would really be of benefit to many of us!
Uninterrupted.... why would you want to interrupt charging for an hour? Use the charger provided, many chargers have differing output power specifications. Again why would you try another? Come to life? Keep the power switch on the Sylphyo off for the entire recharge period. Patience is a virtue....
Clint last edited by
I did a (required) 48 hour charge when I first received my Sylphyo 21 months ago, and only once since then. I did use the charger that came from Aodyo, but I'm not sure that was needed.
I subsequently did some tests (see the post at https://community.aodyo.com/post/1896 with a cool little in-line current meter) and the Sylphyo appears to draw only 170 mAmp at most while charging. It appears that most 5V USB chargers would provide that without issues ...
I would really like to avoid battery issues, so I followed the recommendation of waiting a full 48 hours for a full recharge.
By the way, the one time I did a re-charge, it turned out not to be warranted ... what I really needed was to reset the Sylphyo to factory settings (and reconfigure all my custom settings).
@Clint Thanks for the reply! (BTW, I'm a longtime fan of your Native American Flute YouTube series and have a couple of flutes myself. I really love playing them. :)
I did see the thread you have elsewhere in this site about the current meter, and purchased one myself. My Sylphyo draws around .015A when the switch is off and 0.152 when the switch is on. Does match with your findings?
My current problem is that when I turn on the Sylphyo the screen is blank. Did you perform your 48hr recharge from a deep discharge state (battery totally dead)? If you did a recharge from a deep discharge state, were you able to see any info on the screen?
Other entries in the community forums seem to imply that the instrument goes dark until the 48hr charge is up. I'm getting close to 48hrs and the screen is still dark so I'm getting concerned that maybe the unit is defective.
As far as I can tell, when the Sylphyo is in this deep discharge state, there is no visible indication about how close to fully charged it is. Do you know of any way to tell the current amount of the battery charge?
(BTW - I didn't use the charger that came with the Sylphyo - I bought the unit from Thomann in Germany and it came with a Euro style plug that I couldn't use in the US.)
Thanks again for replying. I really appreciate your help!
Clint last edited by
@wwoodard8 Thank you for your kind words!
I've just measured the current draw of my Sylphyo in 4 different states:
One thing to note:
When performing a 48-hour full charge, I believe that the Sylphyo is normally switched OFF.
My only 48hr recharge from a deep discharge state was when I initially received the Sylphyo. I am not sure of the battery state when I received the Sylphyo, but I suspect it may have to be depleted for shipping.
the instrument goes dark until the 48hr charge is up.
If you leave the Sylphyo switched on during this 48hr charge, I'm not sure if you will actually get a full charge.
There is an indicator on the Sylphyo screen that roughly shows the state of the battery charge. However, when I am charging it, I only turn on the Sylphyo briefly just to check that it is indeed charging (the little lightning bolt symbol).
@Clint Thanks Clint. That helps a lot. I seem to closely match the "Battery fully charged" line so I must have a defective unit. I'll go ahead and ask Thomann to send a replacement.
I appreciate your efforts in this. Thanks a lot!