Midland ER310PRO review
Midland ER310PRO Emergency Crank Radio with Power Bank
Key specs
The maker's figures.
- Power
- USB-C, solar, hand crank
- Bands
- AM, FM, NOAA weather
- Alerts
- NOAA alert
- Charges a phone
- Yes
A rechargeable radio you can top up by USB-C, sun or crank, with NOAA alerts, a flashlight and a power bank for a phone. It covers two items on Ready.gov's list in one.
- Best for
- The crank radio to keep when the power's out
- Skip it if
- You only need a bedside alert radio
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Researched, not used. We haven't used this product. This review is built from the maker's specifications, owner reports and our own sizing.
What we like
- Three ways to charge
- NOAA alerts
- Charges a phone
Worth knowing
- Pricier than basic crank radios
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Our review
The ER310PRO is Midland's rechargeable portable radio: a 10,000 mAh battery, NOAA weather alerts, AM/FM, a flashlight and a USB-C power bank in one unit. This review covers how Midland says it charges, what its alert mode does, and the trade-off of using one radio as alert receiver and phone charger.
What the ER310PRO is and who it suits
The ER310PRO is a handheld emergency radio with a built-in lithium battery. Midland lists NOAA weather alerts, AM/FM radio, Bluetooth streaming, a power bank function, an LED flashlight with an SOS mode and a temperature display. It suits a household that wants one portable radio for the kit or the car.
If your main aim is a bedside radio that responds to county-level warnings, Midland's WR120B is the better-matched design. Our weather radio comparison shows how the two differ.
Three ways to charge it
Midland says the battery charges by USB-C, solar panel or hand crank. Its manual gives the figures: a 5V-only USB source takes 6 to 10 hours to fully recharge a depleted battery, a fast-charging source 3 to 4 hours, one minute of cranking gives up to 9 minutes of radio use, and one hour of optimal sunlight gives up to 45 minutes. An FAQ on the product page says 6 to 8 hours by USB-C instead. The manual says to charge the battery with the supplied USB-C cable before first use.
Midland's FAQ adds a limit on solar: the panel isn't intended to charge from a low or discharged state, only to extend a full charge. Midland says a sunny spot can stretch the time between charges to 2 to 3 weeks, against about a week otherwise. Treat solar and crank as top-ups, and keep the radio charged by USB-C so it is ready when an outage starts.
Battery life and charging a phone
Midland says a full charge gives over 200 hours of radio use, depending on volume. As a power bank, the manual says the full battery can charge an iPhone 14 up to 3 times, with other phones slightly more or less. The manual shows one bidirectional USB-C port for charging both the radio and your devices, though the product page FAQ mentions a USB-A output instead.
One catch from the manual: if the AM/FM or weather radio is on when you plug in a device, the radio turns off and goes into charge mode, and its other features return once you unplug the device, so do not rely on it for alerts while a phone charges. Midland also calls the radio a sealed unit with a battery that is not serviceable, so there are no spare AA cells to swap in. A separate power bank can take the phone-charging load.
How the weather alert works
Midland's manual says to press WX/MENU to turn the alert function on. When an alert is received, the radio sounds a siren and flashes the flashlight and LCD backlight for 1 minute, and pressing any button in that first minute stops it and switches to your selected weather channel. Seven NOAA channels are built in, and Midland's page lists 60+ alerts.
Neither Midland's page nor its manual mentions programming a county code, so do not assume the county-only filtering that a S.A.M.E. radio such as the WR120B offers. Reception is the usual variable: Midland says the radio can receive broadcasts up to 50 miles from the weather station, depending on location, weather and terrain. It advises fully extending the antenna and rotating it until reception is clear, and says placement near a window usually helps indoors.
Flashlight, SOS and extras
The flashlight has two brightness settings, dim and bright. Pressing the flashlight button three times starts an SOS Morse code beacon, and the manual notes the siren sounds 5 seconds after the beacon starts. Holding the button for 2 seconds turns on an ultrasonic dog whistle, which Midland says may assist search and rescue teams in locating people. There is a headphone jack for 1/8 inch plugs.
Who should skip it
Skip the ER310PRO if you only want a bedside alert radio, if you prefer a radio that takes spare AA batteries, or if you would rather keep phone charging separate from the radio, since charging a device turns the radio off. The go-bag checklist shows where a radio fits in a grab-and-go kit, and our power outage checklist covers the plan around it.
A researched review, built from the maker's specs, manual and US listings; facts checked 22 Oct 2026. Sources: Midland: ER310PRO Portable Emergency Crank Radio with Power Bank product page; Midland: ER310PRO owner's manual (PDF, August 2025 revision D).
Who shouldn't buy this
Don't buy it if you only need a bedside alert radio.
This is a Researched review: we haven't used this product. We check every specification against at least two independent sources, re-check the US price on a schedule where we can track it automatically, and say plainly who it isn't for. Commissions never change a rating.
If this isn’t the one
Best for The crank radio that does most things
See the comparison →Best for A proven all-rounder for evacuations and outages
See the comparison →Best for A crank radio from a mainstream radio maker
See the comparison →Questions
Can the ER310PRO charge my phone?
Yes, according to Midland. Its manual says a fully charged battery can charge an iPhone 14 up to 3 times, with other phones slightly more or less. If the radio is on, it turns off while a device charges, so do not rely on it for alerts until you unplug.
Does the ER310PRO alert me automatically?
Midland's manual says to press WX/MENU to enable the alert function, after which the WX icon flashes. When an alert arrives, a siren and flashing light run for 1 minute. The manual does not describe county programming, so it differs from a S.A.M.E. radio.
Is the solar panel enough to keep it charged?
Midland says the panel is meant to extend a full charge rather than recharge a low battery, so charge fully by USB-C first and then leave the radio in a sunny spot. Midland says that can give 2 to 3 weeks between charges, against about a week without sun.
Can I replace the ER310PRO's battery?
No. Midland's manual warns against trying to service or change the lithium battery and calls the radio a sealed unit. It says you do not need to switch the radio off in normal use, but you can if you plan to store it for several months.