---
product_id: 181189645
title: "Batteryless Jump Starter - Jumpstarts Vehicles Using Ultracapacitor Technology for Cars, Trucks, Boats, RVs, ATVs, and Other Gas Engines (RZ-550 (550A))"
brand: "rezervo"
price: "¥50693"
currency: JPY
in_stock: true
reviews_count: 9
category: "Rezervo"
url: https://www.desertcart.jp/products/181189645-batteryless-jump-starter-jumpstarts-vehicles-using-ultracapacitor-technology-for-cars
store_origin: JP
region: Japan
---

# 550A peak output current Ultracapacitor tech, instant recharge Operates -30°F to 140°F Batteryless Jump Starter - Jumpstarts Vehicles Using Ultracapacitor Technology for Cars, Trucks, Boats, RVs, ATVs, and Other Gas Engines (RZ-550 (550A))

**Brand:** rezervo
**Price:** ¥50693
**Availability:** ✅ In Stock

## Summary

> ⚡ Jumpstart your freedom—power up instantly, anywhere, anytime!

## Quick Answers

- **What is this?** Batteryless Jump Starter - Jumpstarts Vehicles Using Ultracapacitor Technology for Cars, Trucks, Boats, RVs, ATVs, and Other Gas Engines (RZ-550 (550A)) by rezervo
- **How much does it cost?** ¥50693 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/181189645-batteryless-jump-starter-jumpstarts-vehicles-using-ultracapacitor-technology-for-cars)

## Best For

- rezervo enthusiasts

## Why This Product

- Trusted rezervo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ready When You Are:** Recharges in minutes using your vehicle’s own battery—no waiting, no downtime.
- • **Safe & Rugged Design:** Short circuit & reverse polarity protection wrapped in a drop-resistant casing.
- • **Weatherproof Warrior:** Reliable performance from freezing cold to scorching heat (-30°F to 140°F).
- • **Power Boost On Demand:** 550 amps of instant jump-start power—never get stranded again.
- • **Zero Maintenance, Zero Hassle:** Ultracapacitor tech means no battery degradation or pre-charging needed.

## Overview

The REZERVO Batteryless Jump Starter (RZ-550) delivers 550 amps of peak current using advanced ultracapacitor technology, enabling instant recharging without the need for internal batteries. Designed for cars, trucks, boats, and more, it operates reliably in extreme temperatures from -30°F to 140°F. Its maintenance-free, rugged design includes safety features like short circuit and reverse polarity protection, making it the ultimate on-the-go jump starter for professionals and DIYers alike.

## Description

Buy Rezervo Batteryless Jump Starter - Jumpstarts Vehicles Using Ultracapacitor Technology for Cars, Trucks, Boats, RVs, ATVs, and Other Gas Engines (RZ-550 (550A)): Jump Starters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Great product but make sure it makes contact with the battery posts not just the clamp. - I've owned this jump starter for almost 2 years and liked it so much I purchased a 2nd for my wife's car. It's saved my as##$$ in more than 1 occasion. Imagine being on a fishing pier all by yourself ready to go home only to find our your car battery is dead. Or car stalling in the middle of the highway for a faulty fan and an overheated engine. Got the car safely to the side of the road and waited, battery dead also so nowhere to go. Waited until everything cooled down and used the Rezervo. I've found that it works even better if it's connected touching the battery posts. It does take around 5 minutes to recharge if your car battery is weak or if it's been stored for a long time. In my case I had it unused for months and it took around 10 minutes to fully charge. It usually takes less than 3 min. After that, it worked like new. Great product, there's another jump starter that has a similar technology but I haven't tried it yet (Autowitt) recommended by Scotty Kilmer. However, after 2 years of having the Rezervo I can definitely say this is a tool that drivers should have in their cars just as a precaution.
Review: Way better than any jumper that has a battery. - Super capacitors don't have to be maintained and pre charged like a battery that will lose its charge over time. You just connect it to the battery and if it has over about 8 volts (enough to turn lights on but not start the engine) it will charge the capacitor in about a minute or two and you can fire up your engine. These seem to have more instant power boost for the rating also. No more going to jump your car and finding out that your booster pack doesn't have a sufficient charge.

## Features

- HARNESSES the power of your own battery's weakest charge and boosts it to start your car
- EASY TO USE design for professionals and DIY; MAINTENANCE FREE with years of shelf life
- INSTANT RECHARGING means no need to wait hours to recharge like traditional jump starters with internal batteries
- SAFE short circuit and reverse polarity protect against damage if connected to wrong terminal; DROP RESISTANT rugged rubber casing
- EXTREME WEATHER operating from -30°F to 140°F (-34C° to 54°C); capable for jump starting in any weather conditions

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B084L4LBS2 |
| Amperage | 550 A |
| Battery Cell Composition | Lithium Ion |
| Battery Type | Lithium Ion |
| Best Sellers Rank | #653,763 in Automotive ( See Top 100 in Automotive ) #882 in Jump Starters |
| Brand | REZERVO |
| Brand Name | REZERVO |
| Compatible with Vehicle Type | ATV, Passenger Car, Truck |
| Customer Reviews | 4.1 out of 5 stars 38 Reviews |
| Item Dimensions D x W x H | 6.25"D x 8.75"W x 2.5"H |
| Manufacturer | REZERVO |
| Manufacturer Part Number | RZ-550 |
| Model Number | RZ-550 |
| Number of Items | 1 |
| Peak Output Current | 550 A |
| Product Dimensions | 6.25"D x 8.75"W x 2.5"H |
| UPC | 767870180057 |
| Vehicle Service Type | ATV , Passenger Car, Truck |
| Voltage | 12 volts |

## Product Details

- **Battery Cell Composition:** Lithium Ion
- **Brand:** REZERVO
- **Product Dimensions:** 6.25"D x 8.75"W x 2.5"H
- **Vehicle Service Type:** ATV, Passenger Car, Truck
- **Voltage:** 12 volts

## Images

![Batteryless Jump Starter - Jumpstarts Vehicles Using Ultracapacitor Technology for Cars, Trucks, Boats, RVs, ATVs, and Other Gas Engines (RZ-550 (550A)) - Image 1](https://m.media-amazon.com/images/I/81l28JmZW1L.jpg)
![Batteryless Jump Starter - Jumpstarts Vehicles Using Ultracapacitor Technology for Cars, Trucks, Boats, RVs, ATVs, and Other Gas Engines (RZ-550 (550A)) - Image 2](https://m.media-amazon.com/images/I/81D7LkZksHL.jpg)
![Batteryless Jump Starter - Jumpstarts Vehicles Using Ultracapacitor Technology for Cars, Trucks, Boats, RVs, ATVs, and Other Gas Engines (RZ-550 (550A)) - Image 3](https://m.media-amazon.com/images/I/81r4O3PwMYL.jpg)
![Batteryless Jump Starter - Jumpstarts Vehicles Using Ultracapacitor Technology for Cars, Trucks, Boats, RVs, ATVs, and Other Gas Engines (RZ-550 (550A)) - Image 4](https://m.media-amazon.com/images/I/81FwEPyDWLL.jpg)
![Batteryless Jump Starter - Jumpstarts Vehicles Using Ultracapacitor Technology for Cars, Trucks, Boats, RVs, ATVs, and Other Gas Engines (RZ-550 (550A)) - Image 5](https://m.media-amazon.com/images/I/81fZuqRYVgL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product but make sure it makes contact with the battery posts not just the clamp.
*by H***N on February 2, 2021*

I've owned this jump starter for almost 2 years and liked it so much I purchased a 2nd for my wife's car. It's saved my as##$$ in more than 1 occasion. Imagine being on a fishing pier all by yourself ready to go home only to find our your car battery is dead. Or car stalling in the middle of the highway for a faulty fan and an overheated engine. Got the car safely to the side of the road and waited, battery dead also so nowhere to go. Waited until everything cooled down and used the Rezervo. I've found that it works even better if it's connected touching the battery posts. It does take around 5 minutes to recharge if your car battery is weak or if it's been stored for a long time. In my case I had it unused for months and it took around 10 minutes to fully charge. It usually takes less than 3 min. After that, it worked like new. Great product, there's another jump starter that has a similar technology but I haven't tried it yet (Autowitt) recommended by Scotty Kilmer. However, after 2 years of having the Rezervo I can definitely say this is a tool that drivers should have in their cars just as a precaution.

### ⭐⭐⭐⭐⭐ Way better than any jumper that has a battery.
*by M***R on October 23, 2024*

Super capacitors don't have to be maintained and pre charged like a battery that will lose its charge over time. You just connect it to the battery and if it has over about 8 volts (enough to turn lights on but not start the engine) it will charge the capacitor in about a minute or two and you can fire up your engine. These seem to have more instant power boost for the rating also. No more going to jump your car and finding out that your booster pack doesn't have a sufficient charge.

### ⭐⭐⭐⭐⭐ It works, proven!
*by E***T on February 21, 2021*

Bought in June 2020, as I have been shying away from lithium battery devices after having a lithium device burst into flames while charging. This super cap jump starter sat in my car for at least 8 months. Due to cold and snow, the battery went low. Trying to start the car, the headlights turned off, and just heard that dreaded "clicking" sound. What a better way to test any jump starter. Hooked it up as per instructions. Took less than 2 minutes before the LEDs showed ready (14v stopped blinking). Then tried to start the car. It started right up. Needless to say, I am VERY impressed. Never thought it would work, but bought it anyway. Glad I have them in both of my cars. I DEFINITELY recommend this, and I rarely write reviews.

## Frequently Bought Together

- Rezervo Batteryless Jump Starter - Jumpstarts Vehicles Using Ultracapacitor Technology for Cars, Trucks, Boats, RVs, ATVs, and Other Gas Engines (RZ-550 (550A))
- NOCO Boost GB40: 1000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - For 6.0L Gas and 3.0L Diesel Engines

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-05*