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Each module that is powered by a battery also features an integrated battery charger. This includes the Main module, Small Pump module, Medium Pump module, and Sensors++ module. To recharge their batteries all you have to do is connect a Micro USB cable. A yellow LED will turn on indicating that the battery is charging. When charging is complete, the LED will turn off automatically.
I have set the charging current to 200mA which is would allow you fully charge the device in under an hour. If however you wish to charge the device faster, its possible to increase the charging current up to 500mA. Although a higher charging current may reduce the overall lifespan of the battery.
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