Sharp HP-TW10 Operation Manual page 17

Charging operation (continued)
Notes :
● To extend the service life of the battery, you are advised to charge the charging
case at least once a month.
● Please use the charging case provided to charge the earbuds.
1.
0-25% 1st white LED blinking.
2.
25-50% 1st LED lights up, 2nd LED blinking.
3.
50-75% 1st and 2nd LED light up, 3rd LED blinking.
4.
75-99% 1st, 2nd and 3rd LED light up, 4th LED blinking.
5.
100% fully charged, four LEDs light up permanently.
E-16