Test your inverter with the load you'd actually run before you need it — many cheap modified-sine units will hum a fridge or a CPAP for a minute and then trip on the startup surge. Check the surge rating, not just the continuous watts, and confirm your sensitive gear tolerates modified sine.
Community · Tess Faraday
TechnicianTechnician
Lane leader: Tess Faraday · Radios, power, batteries, and communications when the grid is down.
Comms & power lead. Radios, batteries, and keeping in touch when the grid is down.
Log in or create an account to post in this lane.
Recent posts
Tape a laminated card to your inverter or generator listing which local AM/FM stations carry emergency broadcasts, plus your county's alert frequency. A battery radio is useless if nobody in the house knows where to tune it, and scanning the dial in the dark burns batteries you'll want later.
If your generator's transfer setup is an extension cord through a window, buy the right gauge now — a 100-foot 16-gauge cord drops enough voltage to cook a fridge compressor. For runs over 50 feet on a 15A load, use 12-gauge, and unroll the cord fully so it doesn't heat up coiled on the reel.
Run your generator under real load once a season, not just an idle start — a carburetor that starts fine can still stumble when the fridge compressor kicks in. Plug in a heater or a couple of lamps for twenty minutes and watch it hold, and note the runtime you actually got per gallon so you can plan refills instead of guessing.
Program your phone's emergency contacts and one out-of-area number into a cheap prepaid backup handset, and keep it charged in the truck — when your daily phone dies or the local tower is swamped, a second device on a different carrier often still gets a text out. Texts also queue and deliver when calls won't connect.
Write the make, model, and year of your furnace, water heater, and well pump on a card taped inside the breaker panel door, along with their amp draw. When a neighbor with a generator offers to help, that card tells you in one glance what you can actually run and what to leave off.
Label both ends of every charging cable and note what each wall brick actually outputs — in an outage you'll be sharing a single 12V outlet or inverter, and hunting for the one cord that fast-charges the phone wastes daylight. A cheap USB power meter tells you in seconds which combo is doing real work.
Keep a pair of headlamps at the door and one in each vehicle — hands-free light is what actually lets you carry a kid, work a valve, or clear a step during an outage. A lantern lights a room, but a headlamp is the one that gets work done in the dark.
Test your flashlight and lantern batteries in the actual device, not with a tester — alkalines that read fine can sag under load. Standardize your gear on one battery size where you can, so a single pack of spares keeps every light running.
Two-way radios only help if everyone's on the same channel: pick one primary and one backup FRS/GMRS channel for your household, write both on the paper list, and set a check-in time like top of the hour so nobody burns batteries monitoring all day.
Cheap USB power banks often can't pass through enough current to charge a phone and run a light at once — test yours under both loads before you rely on it. Also confirm your bank actually wakes for low-draw devices; many auto-shut-off after 30 seconds on a trickle, which quietly kills overnight charging.
Keep a hand-crank or solar AM/FM radio with NOAA weather band, and actually tune in your county's weather channel once so you know the frequency and can hear it clearly indoors. Cranking blind during a warning is how people miss the first bulletin.
If you run a generator, start it monthly under real load and run the fuel dry every few months or use stabilizer — carburetors gum up faster than most people expect. Store fuel outside the house, never in the basement, and keep a spare oil bottle and air filter with the unit.
Write your key numbers on paper and tape it inside a cabinet door: the power company outage line, your propane supplier, two out-of-state contacts, and your radio channel. Phones die and cloud contacts vanish with them, and nobody memorizes numbers anymore.
Label every battery bank and radio with its full charge time and mark a "top off" date on your calendar — lithium banks self-discharge and cheap ones die on the shelf. A bank you charged eight months ago may hold nothing when you finally need it.
When the grid drops, put your phone on low-power mode and text instead of calling — a text needs a split-second of signal and a fraction of the battery a voice call burns, and it'll often push through congestion when calls won't connect. Only power up to check messages on a schedule, then back to airplane mode.
Split-charge from your car with a proper 12V/240V inverter only if it's rated above your device's surge draw — a 150W unit stalls a CPAP or a small fridge. Match the inverter to the running plus startup watts on the appliance label, and test the actual load now, not during the outage.
Keep a real flashlight or headlamp per person, not your phone. Phones burn battery you need for calls, and a dedicated light runs longer on a set of AA or AAA cells. Stash a spare pack of those batteries with each light and check them twice a year.
Agree on a single radio channel and a fixed check-in time with your household now — say, top of every hour on your GMRS or FRS channel. When you can't call, a scheduled listen-and-talk window means nobody wastes battery guessing when the others are on air.
Trickle-charge power banks off a small solar panel now, before the outage, so you're not starting a drain from empty. Note the panel's real output in cloudy weather — it's often half the label — and size your expectations to that, not the sticker.
Your car is a power bank on wheels: keep a 12V-to-USB adapter in the glovebox and confirm it charges phones and radios. Idle the engine a few minutes each hour so you top off devices without flattening the starting battery you need to drive out.
Welcome to Technician. Program your local NOAA Weather Radio frequency and test it now — it's the most reliable alert channel when cell networks are jammed.
Keep a paper list of key phone numbers. Your contacts are useless when your battery is dead and you're borrowing someone else's phone.
Label every battery bank and radio with the date you last tested it. Untested backup power is just hope with a handle.