The 600W Power supply can charge your ElecHive 2500 in about 4.2 hours. It works on the voltage of most countries. 100~130V ( For North America , Japan and Taiwan ) or 200~240V (For other countries) RoHS, CE, and FCC compliant. Specification Model: CH600 Size: 7.9*4.7*2.5in/201*120*63mm DC Output Rated Voltage: 36V Voltage Deviation: +-5% Rated Power: 600W Open Voltage: <36.5V Current Range: 0~16.7A AC Input Voltage Range: 100~130V ( For North America , Japan and Taiwan ) or 200~240V (For other countries) Current: 6A/120V or 3.2A/220V Frequency: 50/60Hz Protections Overload, overcurrent, short circuit, overtemperature(>212?/100°C), IP22 Environmental Conditions Working Temperature : 14?~104?/-10°C~40°C Storage Temperature: -40?~176?/-40°C~80°C Working Humidity: 20%~90%RH Storage Humidity: 10%~95%RH