Ключевые слова: 3d, 3d render, charging battery, communication, concepts, connection, design, device screen, digital display, electricity, energy efficient, full battery smartphone, full charged indicator icon, green color, holding, loading, mobile phone, mobile smartphone charging battery, orange color, percentage sign, portable information device, power line, power supply, power supply box, safe security equipment, smart phone, smartphone charging battery, technology, telephone, touch screen, using phone, wireless technology,