In current design, stylus have three kind of way to charge.
1. Rechargeable battery. Stylus charger by wireless. Stylus and system have wireless charge module.
Disadvantage is low charging efficiency.
2. Rechargeable battery. Stylus have female side connector. End user use cable connect stylus and
system when charge. Disadvantage is charge by extra cable, unfriendly.
3. Battery. End user change new battery when stylus no power. Disadvantage is low environmental
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INC, HP, "STYLUS CONNECTOR STRUCTURE", Technical Disclosure Commons, (May 25, 2021)