Vehicle problems happen when you least expect them, and the three most common reasons for calling a tow truck or roadside assistance are a flat battery, a flat tire, or no gas. .
When it comes to a flat battery, many jump starters exist that you can attach to the battery to give it a boost to keep your car going. One of my favorite brands is Noco, and the company offers a variety of jump starters — from small on very big.
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The only catch with these jump starts is that you have to keep paying them. And if the jump starter happens to flat on itself when you need to use it, it can take hours to charge to the point where it can also set a car on fire.
This is where battery-free jump starters come into play.
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Rezervo RZ-550 Batteryless Jump Starter
Unlike traditional jump starters that require a charge before starting a car, this Rezervo Batteryless Jump Starter only requires a quick charge from a weak battery to start the car.
Spare Parts Batteryless Jump Starter
- Easy to use.
- Maintenance is free.
- No prior charging required, with years of shelf life.
- Charge in about two minutes.
- Short circuit and reverse polarity protect against damage when connected to the wrong terminal.
- Features a non-impact design.
- Can operate over a wide range of temperatures, from -30°F to 140°F (-34C° to 54°C).
- Starts cars, trucks, boats, RVs, ATVs, and other 12V gas engines.
- There are three ways the jump starter can be charged: Connect it to a dead battery (takes about 100 seconds); Connect the 12V socket using the provided cable (about 180 seconds); connecting using USB (5V 2A) (about 50 minutes).
NOTES: The branding of my batteryless jump starter is different from the one linked below, but the specs are comparable.
Instead of having a battery, it uses components called ultracapacitors, and instead of having to be charged before starting a car, it can be charged from a flat car battery in a few minutes.
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Yes, you read that right. It draws the power it needs from the flat battery. (Note the difference between a flat battery and a dead battery: A flat battery has exhausted all of its charge but can be jumpstarted and continue to work properly once – charge.
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You connect the batteryless jump starter to the flat battery, wait while the ultracapacitors draw a small amount of power from the flat battery, charge it, and feed it back to the battery to start the car.
And it’s simple to use – everything you need to know is printed on the jump starter.
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Connect red to positive, marked with +, black to negative, marked with – (there are protections built into the jump starter if you connect it the wrong way), press the ON button to charge the batteries. ultracapacitor, wait for the two green lights to come and you are ready. (On diesel systems with glow plugs, press the GLOW button to change the way the jump starter delivers power.)
Now try to start the car. It’s so easy!
I really like these batteryless jump starters, and while I still have a flat battery, I use mine to quickly and safely start many other people’s cars.