power bank
Phone juice box
A power bank is a portable battery pack used to recharge electronic devices on the go.
You plug your phone or tablet into it when no outlet is available: My phone died, but I had a power bank in my bag.
Capacity is measured in milliamp-hours (mAh)—higher numbers mean more charges before the power bank itself needs recharging.
- chargerPower-restoring device or mount
- portable chargerMobile device backup battery
- batteryPortable electricity storage
- low batteryInsufficient stored power
- portableAble to be carried
on the go · USB · USB port · cable · fast charging · juice · juice up · charge · battery life · travel · backup · phone · dead phone · device · outlet · cord · lithium · capacity
- electricityelectricity, battery, batteries, wire, wires
- battery devicesflashlight, smartphone, laptop, tablet, smartwatch
- charging stuffbattery, charger, adapter, cord, plug
- energy systemselectricity, generators, hydropower, geothermal, hydroelectric
- gadgetssmartphone, gadget, gizmos, widget, tablet
- Mobile Devicessmartphone, cell phone, tablet, iPhone, iPad
power source type
power bankwall outlet
Fixed electrical socket
electrical outlet · generator · solar panel · wall socket · wall charger
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