Sytech SY-774 Manual Del Usuario página 13

Read the battery level indication of your player:
Full Three-quarters full
Important:
Recommended temperature for battery charging is 0
Fully charge it before you use the player for the first time or when you have not used it for a long time.
Charge the player right now when the "Low battery" message is displayed.
Do not over charge or discharge the player. Over charging or discharging will shorten the battery life.
The battery could be totally discharged if the player is not used for a long time (over three months). To avoid over
discharge, fully charge the player every three months and always keep the voltage of the battery above 50%.
If the player is not used for a long time, keep it under the temperature of 23
to maintain the performance of the battery
Basic operation
Turn on/off the Player
Make sure the battery is sufficient and the headphone is connected correctly.
To turn on the player, press and hold the [ ] button.
All manuals and user guides at all-guides.com
Half full
℃ to 35 ℃ .
.
9
Low Empty
± 5 ℃ and the moisture of 65 ± 20% RH