How to Look After Defibrillator Batteries for Longer Use
Defibrillator batteries don't get much attention until we need them. But treating them like any other battery goes a long way. With summer at full pace in Australia, January is the right time to take a closer look at how your gear is holding up. Between road trips, beach holidays, and long drives through heat, battery performance can dip without warning.
Looking after your defibrillator batteries isn't difficult, but it does take a bit of routine. A few simple habits in how you store, use, and check the battery can keep it reliable for longer. That way, when the moment comes, you’re not second-guessing whether your unit will work.
Know Your Battery Type
Not all AED batteries are the same, and knowing which type you have is the first step. Some models use single-use batteries that stay in the unit until they run out. Others use rechargeable ones, which need to be topped up now and then. Whether yours plugs into a charger or comes with a backup battery, the routine for each is different.
• If you have a rechargeable battery, it’s important to keep to a charge cycle. Don’t leave it plugged in constantly or wait too long between charges.
• For non-rechargeables, check the expiry date printed on the label. These batteries hold a long shelf life, but they still lose power over time even without use.
Keep an eye out for signs of battery decline, like unusual beeping or a warning light. In some cases, your AED will show a red or flashing indicator next to the battery symbol. If you’re unsure what the light means, check the manual or give us a ring for support. It’s better to ask early than find out the battery is dead when you need it most.
Restart the Heart stocks genuine AED batteries for leading defibrillator brands including Lifepak, HeartSine, Philips, and Zoll. All replacement batteries are clearly labelled with expiry dates and are made specifically for each model, so matching up your unit is straightforward.
Smart Storage Habits
Heat and direct sunlight are some of the worst conditions for defibrillator batteries. Summer makes this a bigger issue, especially when AEDs are stored in cars, caravans, or sheds. A battery sitting in a locked boot can get hot fast, and that heat speeds up wear.
• Try to keep your AED somewhere cool and dry out of sun exposure.
• Avoid leaving it inside a parked car or storage box where temperatures climb fast.
• If it’s part of a first aid kit in a boat or 4WD, check for heat build-up after a trip.
Storing it somewhere consistent helps the most. Whether that’s a cupboard, drawer, or first aid shelf, having a set spot means fewer surprises when you go looking for it. If your AED is used in outdoor settings, at sport clubs or bush trails, consider bringing it inside during heat waves or off-season periods.
From the Restart the Heart website, we recommend storing your defibrillator and batteries with your first aid kit in a cool, dry area to boost their reliability and lifespan.
Rotate and Replace with a Plan
Batteries don’t last forever, so having a rhythm to check and replace them keeps things simple. Start by writing the expiry date on a calendar or phone reminder. Some people like to stick a label on the battery with the date they installed it so they’re not guessing later.
• Build a reminder to check the battery twice each year, like at the start and end of summer.
• If you have more than one unit, swapping batteries between them where permitted can help reduce waste, just make sure the models match.
• Use a small notebook or checklist to track what’s been checked and when. This can sit with the AED so everything stays in one spot.
Keeping tabs on expiration dates also avoids last-minute scrambles. It’s easy to forget until a school takes a bushwalk or a sports day is planned, and then the need becomes urgent. A bit of planning helps avoid that.
Avoiding Common Mistakes
There are some habits that quietly wear out your defibrillator battery. Leaving your unit on when it’s not in use, repeating test runs too often, or forcing a charge when it’s not needed can all shorten battery life.
• Don’t run self-tests more often than recommended by the manual.
• Turn off the unit properly if it’s not intended to stay powered.
• Let your battery rest between uses if it’s rechargeable.
Watch out for warnings like a slow power-up time or message indicators that don’t clear. If your AED beeps regularly or shows an error, don’t ignore it. These warnings usually point to battery issues or low charge. It’s safer to take action early and test the battery or arrange a replacement.
Many people don’t notice they’ve made some of these mistakes until their unit fails a check. Most of the time, it’s accidental. We leave it in the car one too many times or forget to turn it off after an event. With a little extra attention, those small habits won’t turn into costly problems.
When to Double-Check in Summer
By late January, most people have been through at least a few warm days, road trips, or school holidays. That means AEDs might’ve moved around, been packed up, or sat through heat without being used. This is one of the best times to stop and reset.
• Check now if your batteries feel warm to the touch after storage.
• Run a visual inspection for warning lights, corrosion, or low charge signs.
• If it was taken camping or on a beach day, look at the battery area for sand or moisture.
Every summer we see people realise too late that the unit isn’t ready. AEDs need to sit in standby mode, so they quietly drain small amounts of power over time. That’s normal, but during hotter months, the pace of battery drop can speed up. A January check saves a mid-February failure.
Keeping Your AED Ready, Year-Round
Looking after defibrillator batteries doesn’t need to take much time. It’s just about linking small habits to times of year when they make sense. A check in January, again in winter, and whenever you return from a big trip or event will mostly cover it.
Keeping the battery in good condition means lower stress later. It takes the guesswork out when something unexpected happens. You’re not left wondering if the AED will turn on or beep out an error. Summer is a great time to bring these checks into your routine, especially as kids return to school, holidays wind down, and everyday life picks up again.
Taking time to check your AED this season is also a great opportunity to make sure your backup supplies are ready. We offer a wide selection of defibrillator batteries suitable for all major brands, so you’re covered whenever it’s time to replace one. Staying proactive with routine checks helps you spot wear and tear before it causes issues. If you have any concerns or questions about battery life, our team at Restart the Heart is here to help, just give us a call and we’ll walk you through the next steps.
Staying on top of battery checks and pad expiry dates is a simple way to build confidence in your response plan. At Restart the Heart, we know that regular defibrillator maintenance makes all the difference when seconds matter. A quick once-over now can help avoid heat-related damage or low battery surprises down the track. If you’re unsure whether your gear is still roadworthy, we’re happy to help. Give us a call and we’ll walk you through what to check.