What can I charge using a USB charger in a power module?

What can I charge using a USB charger in a power module?

USB power supplies (chargers) are available with different current ratings. From 1 amp per socket to 2.5 amp. Most of these are 5 volts (the standard for USB devices). Thus a 2 amp USB socket, at 5 volts will deliver 10 watts of power (2A x 5V = 10W) The I pad uses a 10 watt charger as standard. While mobile phones tend to use...

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