Voltage & Frequency: Indonesia operates 220V AC with 50Hz frequency (compared to 110V/60Hz in North America or 240V/50Hz in Australia). Check all device specifications before use; incompatible devices risk damage. Many modern devices (laptops, phone chargers, cameras) support 100-240V and operate safely with appropriate plug adapters.
Plug Types: Indonesia primarily uses Type C plugs (two round pins) and increasingly Type I plugs (Australian-style three angled pins). Older buildings and budget accommodations feature Type C; modern hotels provide Type I. Universal adapters accommodating both types recommended.
Adapter Recommendations: Purchase combination adapters in home country before travel; adapters available in Denpasar but quality varies. Dual or multi-socket adapters (Rp 50,000-150,000) allow simultaneous device charging. USB-powered adapters with multiple ports increasingly common and convenient for mobile devices.
Power Reliability: Denpasar experiences occasional power outages, particularly during peak usage (6-8 PM). Hotels in tourist areas maintain backup generators. Power surges possible; use power strips with surge protection for valuable electronics. Voltage fluctuations occasionally occur; power stabilizers recommended for sensitive equipment.
Charging Facilities: Hotels provide charging outlets in rooms and common areas. Cafes, restaurants, and malls offer outlets and USB charging (sometimes with beverage purchase requirement). Portable power banks (Rp 100,000-300,000) purchased locally useful for full-day activities away from charging sources.