![]() It’ll give the vehicle enough juice so you can turn the key, start the car, and be on your way. You plug the included alligator clamp jumper cables into the battery pack, then connect the clamps to your car battery and turn on the jump starter. Once a portable jump starter is fully charged, it’s ready to go. Devices like the HULKMAN have over-volt protection, reverse-polarity protection, and short-circuit protection. It’s a portable battery pack that combines all the power at once to start a car. ![]() Once the engine is on and running, the alternator will charge your battery.įor example, the HULKMAN Alpha 85 jump starter we recently reviewed has a 20,000 mAh battery inside, which is about 4x bigger than the Li-Ion battery in most phones. So while a portable jump starter won’t charge the battery, it’ll provide the necessary power and CCAs to crank the engine and start the vehicle. You’re essentially bypassing it and starting the car with something else. If your battery doesn’t have enough juice, you can’t start the car.įor those unaware, you’re not actually charging the battery when you jump-start a car, either with another vehicle or with a portable jump starter. You’ll need at least 150 CCA to start your average compact car, but larger trucks and SUVs often need a bigger battery offering upwards of 400-650 amps. When that happens, you’ll need a boost. Every car battery has a cold cranking amperage (CCA) rating, which is how much amperage power it can deliver to turn over the engine. When your car battery gets too low, even though your door or dash lights still come on, it doesn’t have enough power to start the engine. How Portable Jump Starters Work Cory Gunther / Review Geek It uses all that battery power to turn over the engine when your car battery is dead. While some larger options use a battery similar to what you’ll find in an automobile, portable car jump starters like we’re talking about today use lithium-ion batteries, the same type of battery in your smartphone-only bigger. These devices output a large amount of power quickly and safely, enough to turn over the engine in a car. These nifty little gadgets not only replace jumper cables, but you don’t need another person to get the job done. It’s a portable handheld device with enough battery capacity (and cranking amps) to successfully start a car or truck. What is a Portable Car Jump Starter? Cory Gunther / Review GeekĪ portable car jump starter is exactly as the name suggests. ![]() Here’s how a portable jump starter works and why they’re worth buying. Then, you pop the hood on both vehicles, connect the cables to both batteries, give it a minute, and start the car and hope it works.Īnd while that’s fine, not everyone has a set of jumper cables, and you won’t always be in a situation where a family member or friend can swing by to boost you. Typically, when you have a low car battery, you’ll need a pair of extra long jumper cables with clamps on both ends and a second car running to share its power with your dead car. And you don’t have to, as long as you own a portable jump starter. No one wants to get stranded with a dead battery and a car that won’t start, then dig out the jumper cables and find another vehicle to give you a jump start.
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