Midland ER310 review: a crank weather radio that keeps alerts coming when the power is out

This is a research-based review, based on manufacturer specs and published data. We do not test products. Specs and quotes come from Midland's ER310 product page and FAQ, checked November 1, 2026, and from the National Weather Service's NOAA Weather Radio pages.

When the grid goes down for days, cell networks and home internet often fail with it. A radio receiver becomes the household's link to official warnings and local news. The ER310 is built for that job: it receives the NOAA Weather Radio network plus AM and FM broadcast stations, and it can be kept running from a wall charge, a hand crank, the sun or a stack of AA batteries.

That last option is what separates it from many crank radios. Rechargeable batteries eventually wear out or sit dead in a drawer. Six fresh AA cells are something most households can find in a long outage.

Who should buy it

• Any household without a dedicated NOAA weather radio. The ER310 sounds an alert when one is issued on your local weather channel.
• People in hurricane, ice storm or wildfire shutoff regions who expect multi-day or multi-week outages and want a radio with more than one way to stay powered.
• Anyone who keeps AA batteries on hand for flashlights and lanterns: the radio can share that supply.

Who should skip it

• Buyers who mainly want a phone charger. Midland's FAQ says newer phones (iPhone X and later, and current Android phones) draw more than the radio will give, and the radio protects its own battery first. Get a power bank such as the Anker 737 for that.
• Anyone who wants county-specific alerts. The ER310 sounds alerts issued on your local channel; Midland does not describe SAME county coding for this model, so you may hear alerts for neighboring counties.
• Shortwave listeners. The ER310 covers AM, FM and weather only. The Kaito KA600 adds shortwave and longwave.

Strengths

• Four power sources. Rechargeable lithium-ion, hand crank, solar and 6 AA batteries. Midland calls the AA option a back-up power option; it matters most after the rechargeable cell is spent.
• Long rated runtime. Up to 45 hours of normal use from the 3,500 mAh battery, per Midland. Played a few hours a day, that is more than a week between charges.
• Weather alerts. NOAA Weather Radio with alert: when a warning is issued on the local channel, the radio sounds it.
• Designed to stay on. Midland's FAQ says the ER310 is meant to stay on 24/7; holding the BAND button pauses audio while the clock stays lit.
• A usable light. A 1,400-lux Cree LED flashlight with low and high settings and an SOS beacon.

Drawbacks

• Weak phone charging. Midland says the design dates to the early 2000s and was meant for an emergency-only top-up on older phones. Expect little or nothing on a modern smartphone.
• Solar maintains, it does not revive. The FAQ says the panel is not intended to charge the battery from a low or discharged state. Charge fully by USB, then keep it in a sunny window.
• Micro-USB, no adapter in the box. You need your own 5 V USB wall adapter, and the cable is the older micro-USB type.
• No real off switch. Midland says the radio can only be powered off fully by removing the battery, which matters for long storage.
• AA cells not included. Buy and date a set of six when you buy the radio.

How it compares

Alternatives in the same job: a larger multi-band radio, Midland's smaller sibling and a compact Red Cross-branded crank radio. Figures are from each manufacturer's page.

Using it in a long outage

Set it up before the storm

1. 01Charge it fully over USB. Midland's FAQ says the radio runs best when charged overnight by USB and then kept in a sunny spot.
2. 02Look up your county's NOAA Weather Radio channel on the National Weather Service station finder and set the radio to it. If two channels cover your county, Midland suggests the clearest one.
3. 03Put six fresh AA batteries in a bag taped to the radio, with the purchase date written on it.
4. 04Store a 5 V USB wall adapter and the micro-USB cable with the radio, since the box has no adapter.

How long it can run without the grid

Start from Midland's figure of up to 45 hours of normal use per charge. Midland says that with the radio kept in a sunny place after a full USB charge, it typically goes 2 to 3 weeks between full charges, and about a week without the sun. Once the rechargeable battery is spent, the AA backup and the crank carry it further. Keep the flashlight on its low setting and play the radio in short sessions at set times, such as the top of each hour for the forecast.

NOAA Weather Radio All Hazards is a nationwide network of more than 1,000 transmitters that broadcasts official National Weather Service warnings, watches and forecasts 24 hours a day, according to the NWS. It also carries non-weather emergency messages through the FCC's Emergency Alert System. The transmitters use seven VHF frequencies between 162.400 and 162.550 MHz, which is why you need a receiver like this rather than an ordinary FM radio.

Phones and the rest of your power plan

Ready.gov advises planning batteries and alternative power sources for when the power goes out, such as a portable charger or power bank. Treat the ER310 as your information source and keep phones on a separate power bank or a small power station such as the EcoFlow RIVER 3 Plus. If someone in the house holds a GMRS or ham license, a radio like the Midland GXT67 PRO adds two-way talk, which the ER310 cannot do.

For storage between outages, Midland's FAQ says the only way to fully power the radio down is to remove the battery. Recharge it every few months and replace the dated AA set on a schedule, for example every time you change smoke alarm batteries.