“In the event that the power runs out when I am away from a power source, may I use a portable charger/power pack to charge this? If so, how many mAh do you recommend?”
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Great question! The battery on the Square Terminal lasts all-day, should it have a full charge. The reader also goes to sleep after 2 hours of inactivity to help preserve the battery. When it comes to a portable charger that fits the reader, your more than welcome to use it. However, we can't guarantee it will work.
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