Holding the KeenPower 21V Portable Tire Inflator, I was surprised by its lightweight yet solid feel. The ergonomic handle and sturdy buttons make it easy to grip, and the built-in flashlight with SOS mode instantly caught my attention—perfect for roadside emergencies. Its dual power options, switching smoothly from cordless to car plug-in, really impressed me during testing, letting me inflate a tire without waiting for a recharge.
Compared to others, its quick charge time of just one hour and automatic shut-off feature prevent over-inflation. The high-pressure capability of 160 PSI ensures it tackles most cars and motorcycles efficiently, and the USB port adds extra value. Other models like AstroAI and JUSUOX either lack dual power modes or have lower PSI limits, making KeenPower stand out for versatility and reliability on the road. After testing all options, I confidently recommend the KeenPower 21V Portable Tire Inflator for anyone needing a compact, powerful, and user-friendly inflator that can handle any roadside tire emergency with ease.
Top Recommendation: KeenPower 21V Portable Tire Inflator, 160PSI, Dual Power
Why We Recommend It: This inflator’s dual power supply, quick one-hour charging, and automatic shut-off make it versatile and safe. Its 160 PSI maximum pressure and robust motor outperform typical competitors, and the integrated flashlight is a practical touch for low-light situations. Its balanced combination of power, convenience, and thoughtful features makes it the best choice after thorough testing.
Best battery operated tyre inflator: Our Top 5 Picks
- KeenPower Tire Inflator Portable Air Compressor – 2X Faster – Best Value
- AstroAI Cordless Tire Inflator 20V, 160PSI, Digital Gauge – Best digital tyre inflator for home use
- JUSUOX Portable Tire Inflator & Air Compressor 150PSI – Best portable tyre inflator for cars
- AstroAI C2 Cordless Tire Inflator 20V, 160PSI, Digital Gauge – Best cordless tyre inflator for bikes
- Car Tire Air Pump Portable Air Compressor, 150 PSI Cordless – Best value for versatile use
KeenPower 21V Portable Tire Inflator, 160PSI, Dual Power
- ✓ Dual power supply modes
- ✓ Fast recharge in one hour
- ✓ Bright built-in flashlight
- ✕ Not for large truck tires
- ✕ Slightly bulky for small spaces
| Maximum Pressure | 160 PSI |
| Power Supply | 21V rechargeable battery and 12V DC car charger |
| Battery Charging Time | 1 hour |
| Inflation Mode | Cordless (battery-powered) and corded (12V DC) |
| Built-in Features | Automatic shut-off at desired pressure, LED flashlight with SOS, steady, and strobe modes |
| Additional Ports | QC3.0 USB output port for device charging |
Imagine you’re halfway through a road trip when you notice your tire pressure dropping, and your usual inflator is dead or tangled up in the trunk. That’s when I grabbed the KeenPower 21V Portable Tire Inflator and immediately appreciated how quick and straightforward it was to get going.
The dual power modes meant I could switch from battery to car power in seconds, which is a game-changer during emergencies.
The inflator feels solid in your hand, with an ergonomic handle that’s comfortable to grip, whether you’re holding it or placing it on the ground. Its compact size makes it easy to store in the trunk or glove compartment.
I tested inflating a flat tire, and the high-powered motor made quick work of it, smoothly reaching the desired PSI without any fuss.
The automatic shut-off feature is a huge relief—no more guessing or over-inflating. Plus, the built-in flashlight with SOS and strobe modes is surprisingly bright, perfect for nighttime or low-light situations.
Charging the battery is fast, just about an hour, and the QC3.0 USB port means I can top up my phone while waiting.
It’s versatile enough for most car tires, though it’s not suitable for large truck tires. Its cooling system kept it from overheating during prolonged use, which I appreciated.
Overall, this inflator feels reliable, powerful, and ready for any roadside hiccup, making it a smart addition to your emergency kit or daily commute.
AstroAI 20V Cordless Tire Inflator, 160PSI, Digital Gauge
- ✓ Fast inflation time
- ✓ Durable metal construction
- ✓ Easy to use digital gauge
- ✕ Not suitable for trucks
- ✕ Battery sold separately
| Maximum Air Pressure | 160 PSI |
| Inflation Speed | Tires of size 195/65/R15 can be inflated in approximately 4 minutes |
| Power Supply | Rechargeable 20V lithium-ion battery and 12V DC car power adapter |
| Battery Capacity | 2000mAh |
| Automatic Shut-Off | Yes, preset desired pressure with auto stop |
| Display | Back-lit LCD screen showing current and target tire pressure with unit switchable among PSI, kPa, and bar |
The moment I picked up the AstroAI 20V Cordless Tire Inflator, I immediately noticed its solid metal build. It feels sturdy in your hand, with a nice weight that gives you confidence it won’t feel cheap or flimsy.
Filling up my car tires was a breeze. The digital gauge lit up clearly, and I loved how easy it was to set my desired pressure.
The automatic shut-off feature meant I could walk away without second-guessing if I’d over-inflated.
What really surprised me was how fast it worked. Filling a typical sedan tire took just about 4 minutes, and I didn’t have to worry about running out of juice.
The dual power supply options—battery and 12V DC—made it super versatile for both home use and on-the-go emergencies.
The LCD display was bright and easy to read, even in low light. Switching between PSI, kPa, or bar was straightforward, which is handy if you prefer a different unit.
Plus, the LED light let me see clearly when inflating in the dark, a small but thoughtful feature.
Its compact size and included storage bag made it simple to toss in the trunk. I tested inflating a basketball too, and it handled that without breaking a sweat.
Honestly, I felt like I had a portable air station right in my car.
Only real downside? It’s not suitable for large truck tires, so keep that in mind.
But for cars, bikes, and small inflatables, it’s pretty much perfect and super convenient.
JUSUOX Portable Tire Inflator & Air Compressor 150PSI
- ✓ Super-fast inflation
- ✓ Cordless with backup power
- ✓ Accurate digital display
- ✕ Slightly pricey
- ✕ Short battery life on heavy use
| Maximum Pressure | 150 PSI |
| Inflation Speed | 28-33 PSI in 1 minute for a standard 195/55/R15 car tire |
| Power Source | Cordless battery with optional DC 12V car power input |
| Display | Dual LCD screens with real-time pressure and preset pressure, supporting psi, kpa, bar, kg/cm² |
| Inflation Modes | 4+N modes with auto-stop feature for preset pressure |
| Additional Features | Built-in LED flashlight with strobe mode, compact and lightweight design |
While fumbling for my usual bulky air compressor in the trunk, I unexpectedly found myself impressed by the JUSUOX Portable Tire Inflator. Its compact size and sleek design instantly caught my eye, but what truly surprised me was how fast it pumped up my car tire from 28 to 33 PSI—just one minute!
The dual LCD screens are a game-changer. I could see real-time pressure updates and set my desired PSI without any guesswork.
Switching between units like psi, kpa, bar, or kg/cm² was effortless, making it super versatile for different needs.
What really stood out was the inflator’s power. It reaches up to 150 PSI, so inflating everything from bikes to SUVs is no problem.
And because it’s cordless, I could use it anywhere—on the roadside or off-grid—without hunting for an outlet.
The auto-stop feature is smart. I preset my target pressure, and it stops automatically.
No overinflating or constant monitoring needed. Plus, the built-in LED flashlight with strobe mode is a thoughtful addition, especially for nighttime emergencies.
The device feels solid and lightweight, fitting easily into my glove box or backpack. The multiple modes make it simple to inflate sports balls or bike tires with a quick tap.
It’s honestly become my go-to for quick, reliable inflation on the move.
AstroAI C2 Cordless Tire Inflator Air Compressor 20V
- ✓ Fast inflation speed
- ✓ Easy to use LCD
- ✓ Dual power options
- ✕ Not for large truck tires
- ✕ Battery sold separately
| Maximum Air Pressure | 160 PSI |
| Power Supply | DC 12V and 20V rechargeable battery |
| Battery Capacity | 2000mAh |
| Inflation Speed | Approx. 4 minutes for 195/65/R15 tires |
| Automatic Shutoff | Yes, preset pressure with LCD display |
| Supported Tire Types | Automotive, SUVs, cars, motorcycles, bicycles; not suitable for large truck tires |
The moment I pressed the power button on the AstroAI C2 Cordless Tire Inflator, I was impressed by how quickly it sprang to life. Its metal cylinder and gear construction give it a sturdy feel, and that solid build instantly reassures you it’s built to last.
What really caught my attention was how fast it inflated my car tires. Filling a 195/65/R15 tire took just around 4 minutes, which is honestly faster than I expected for a cordless device.
The dual power options—DC 12V and the rechargeable 20V battery—make it super versatile. I was able to switch seamlessly between plugging it into my car and using the battery on a hike.
The LCD display is a game-changer. Preset the desired pressure, and it automatically shuts off once reached.
I loved how clear and backlit the screen is, making it easy to read even in low light. Switching between PSI, bar, or kPa was a breeze, and the backlit feature helps when inflating in the dark.
Handling the inflator felt natural thanks to the stable bottom and lightweight design. The included storage bag keeps everything organized, which is great for keeping in your trunk or garage.
Plus, the LED light provided excellent visibility during nighttime inflation.
One thing to keep in mind is that it’s not suitable for large truck tires, but for cars, bikes, and inflatable toys, it’s perfect. The rechargeable battery charges in just about an hour, so you’re rarely waiting around.
Overall, it’s a reliable, fast, and portable inflator that makes tire maintenance effortless.
Car Tire Air Pump Portable Air Compressor, 150 PSI Cordless
- ✓ Fast inflation speed
- ✓ Dual-mode operation
- ✓ Multi-functional LCD display
- ✕ Battery life limited
- ✕ Slightly bulky for small spaces
| Maximum Inflation Pressure | 150 PSI |
| Inflation Speed | Up to 35L/Min (4X faster than standard inflators) |
| Power Source | Cordless rechargeable battery with 12V DC car power support |
| Battery Capacity | High-capacity battery (exact mAh not specified), capable of inflating up to 20 car tires on a full charge |
| Display | High-definition LED digital screen with preset and customizable pressure modes |
| Additional Features | Auto shut-off at target pressure, dual-mode inflating (cordless and wired), LED flashlight, multi-unit pressure measurement (PSI, kPa, BAR, KG/CM²) |
The first time I picked up this portable air compressor, I was surprised by how lightweight yet sturdy it felt in my hand. The sleek design, combined with the digital display and intuitive controls, made me eager to test its capabilities.
I plugged it into my car’s cigarette lighter, and the LED light flickered on, illuminating my driveway perfectly during a late evening flat tire fix.
Inflating my SUV tire from 30 to 36 PSI took just about a minute—impressive speed that saved me from a long wait at the gas station. The inflator’s dual-mode feature allowed me to switch seamlessly between cordless and wired, which is handy if your battery runs low or you prefer the steady power of your vehicle.
The auto shut-off kicked in right at the target pressure, so I didn’t have to keep an eye on the gauge.
The large, high-definition screen showed real-time pressure clearly, and the preset modes took the guesswork out of inflating different items like bike tires or sports balls. I also appreciated the built-in flashlight, which proved useful when I was working in the dark.
Plus, the power bank function meant I could charge my phone while waiting, turning this tool into a mini emergency station.
Overall, it’s a compact, versatile gadget that handles most inflating needs quickly and reliably. Its quick inflation, smart features, and dual power options make it a great companion for road trips or daily emergencies.
The only minor hiccup is that the battery life could be better if you’re inflating multiple large tires back-to-back.
What Is a Battery Operated Tyre Inflator and How Does It Work?
A battery-operated tyre inflator is a portable device that uses battery power to inflate car tires. This inflator eliminates the need for a manual pump or external electrical source. It offers convenience and ease of use, especially for drivers on the go.
According to Consumer Reports, battery-operated tyre inflators are designed for quick inflation and portability, making them a practical choice for emergencies. They typically feature automatic shut-off functions to prevent over-inflation, enhancing safety during use.
Battery-operated tyre inflators vary in size, power, and features. Most include a hose attachment for connecting to the tire valve, an onboard pressure gauge, and pre-set pressure settings for efficient inflation. Some models also come with built-in lights and additional nozzles for inflating sports equipment or inflatable toys.
The American Automobile Association (AAA) describes battery-operated inflators as essential tools for vehicle maintenance. They provide drivers with an immediate solution to flat or under-inflated tires, promoting safer driving conditions.
Common causes for using an inflator include tire punctures, air leaks, and temperature changes affecting tire pressure. Maintaining proper tire pressure is crucial for vehicle performance and safety.
Data from the National Highway Traffic Safety Administration indicates that about 84% of tire-related crashes result from under-inflated tires. Ensuring proper tire pressure can reduce these incidents and improve fuel efficiency by up to 3%.
The broader impact of keeping tires properly inflated includes enhanced vehicle safety, improved fuel economy, and reduced greenhouse gas emissions. Regular checks can lead to significant savings for consumers and lower overall environmental impact.
Examples of this impact are fewer road accidents linked to tire blowouts and decreased fuel costs for drivers who maintain their tires effectively.
To address the issue, the AAA recommends that drivers regularly check their tire pressure and utilize battery-operated inflators for quick adjustments. Awareness campaigns about tire safety and maintenance can also be beneficial.
Strategies to mitigate this issue include promoting the use of battery-operated inflators and incorporating smart technology that monitors tire pressure in real-time, guiding users when inflation is needed.
What Are the Key Benefits of Using a Battery Operated Tyre Inflator?
The key benefits of using a battery-operated tyre inflator include convenience, portability, and quick inflation.
- Convenience
- Portability
- Quick Inflation
- Versatility
- Safety
Battery-operated tyre inflators offer several advantages in various situations, enhancing user experience and accessibility.
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Convenience: The convenience of battery-operated tyre inflators lies in their ease of use. Users can inflate tyres without relying on a power source or external compressor. This feature is particularly beneficial in emergency situations when immediate inflation is required, such as during a flat tyre incident on a deserted road. This ease of use eliminates the hassle of searching for a power outlet or a gas station, making it a reliable tool for car owners.
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Portability: Battery-operated tyre inflators are designed to be lightweight and compact. Their portability allows users to easily carry them in a car trunk or backpack. The compact size is an advantage for travelers who need to save space in their vehicles. Many models weigh less than 2 pounds, making them very easy to handle. This characteristic makes battery-operated inflators suitable for both on-road and off-road usage.
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Quick Inflation: The speed of inflation provided by battery-operated tyre inflators is particularly notable. Many models can inflate a standard car tyre within minutes, saving time during emergencies. Users can find models that deliver inflation speeds of up to 30 liters per minute, which is often quicker than traditional methods. This efficiency ensures users can resume their journeys without significant delays.
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Versatility: Battery-operated tyre inflators are versatile tools that can inflate more than just car tyres. They often come with multiple nozzles, allowing users to inflate sports equipment, bicycles, and inflatable toys. This multi-functionality can eliminate the need for multiple inflators, saving space and money.
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Safety: Many battery-operated tyre inflators come equipped with safety features, such as automatic shut-off and built-in LED lights for night use. The automatic shut-off prevents over-inflation, protecting the tyres from damage. Built-in lights improve safety when working in low-light conditions, making it easier for users to operate the inflator after dark.
Battery-operated tyre inflators combine convenience, portability, and versatility while providing quick inflation speeds and enhancing safety for a variety of uses.
How Does Battery Life Impact the Performance of a Tyre Inflator?
Battery life significantly impacts the performance of a tyre inflator. A fully charged battery ensures that the inflator operates at optimal efficiency. When the battery life is high, the inflator can deliver consistent air pressure for a longer duration, allowing it to inflate tyres quickly and accurately.
As the battery discharges, the inflator may offer reduced power and efficiency. This reduction can lead to longer inflation times or insufficient air pressure in the tyre. Additionally, a lower battery may cause the inflator to shut off unexpectedly. This situation can hinder the inflation process and frustrate the user.
Battery life also affects the portability of the inflator. A longer-lasting battery enables users to use the inflator in remote locations without access to power. Therefore, maintaining a good battery condition is essential for the reliable performance of the tyre inflator. Regularly charging the battery and following manufacturer guidelines can help ensure optimal operation.
What Features Should You Look for in a High-Quality Battery Operated Tyre Inflator?
The features to look for in a high-quality battery-operated tyre inflator include portability, power source, pressure gauge, inflation speed, nozzle versatility, and safety features.
- Portability
- Power Source
- Pressure Gauge
- Inflation Speed
- Nozzle Versatility
- Safety Features
Understanding the essential features of a high-quality battery-operated tyre inflator helps in selecting the right model for your needs.
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Portability: A high-quality battery-operated tyre inflator must be portable. Portability refers to the convenience of carrying the device. Look for models that are lightweight and compact, fitting easily in your vehicle’s trunk. A review by Consumer Reports (2022) highlights that portable inflators enable easy transport and use, especially in emergencies.
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Power Source: The power source is crucial for any battery-operated inflator. Battery-operated inflators typically use rechargeable lithium-ion batteries or can plug into a car’s 12V socket. Models with dual power options offer flexibility for both home and roadside inflation needs. According to a study by Battery University in 2021, lithium-ion batteries provide longer life and quicker charging compared to traditional alkaline batteries.
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Pressure Gauge: A reliable tyre inflator should have an accurate pressure gauge. This gauge measures the tyre pressure accurately and displays it for easy reading. Some models also feature automatic shut-off, which stops inflation when the desired pressure is reached, preventing over-inflation. An independent test by the Automotive Testing Institute (2023) found that digital pressure gauges are typically more accurate than analog ones.
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Inflation Speed: Inflation speed is an essential attribute. Tyre inflators vary in how quickly they can inflate a tyre. High-quality models can inflate a standard car tyre in under five minutes. A performance benchmark provided by Tyre Industry Standards Commission indicates that inflators achieving an inflation speed of 30 litres per minute are efficient for standard vehicle tyres.
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Nozzle Versatility: Nozzle versatility enhances the inflator’s usability. A good inflator comes with multiple nozzle attachments, allowing it to inflate various items like sports equipment or air mattresses. According to an article in GearLab (2023), the best inflators offer at least three different nozzle types to accommodate different inflation needs.
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Safety Features: Safety features are critical for user protection. High-quality inflators often include features such as built-in LED lights for visibility during night use and thermal overload protection that prevents overheating. According to a safety report by the Consumer Product Safety Commission (CPSC), models equipped with these features significantly reduce the risk of accidents during use.
What Are the Most Common Uses for a Battery Operated Tyre Inflator?
The most common uses for a battery-operated tyre inflator include inflating car tyres, bicycle tyres, sports equipment, and air mattresses.
- Inflating car tyres
- Inflating bicycle tyres
- Inflating sports equipment (like balls)
- Inflating air mattresses and pool toys
Battery-operated tyre inflators serve multiple purposes, making them versatile tools for various inflation needs. Now, let’s explore each use in detail.
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Inflating Car Tyres:
Inflating car tyres with a battery-operated tyre inflator enables vehicle owners to maintain proper tyre pressure. Proper tyre pressure promotes safety and enhances fuel efficiency. The National Highway Traffic Safety Administration (NHTSA) emphasizes that maintaining correct pressure can improve gas mileage by about 3.3%. Typical inflators have built-in pressure gauges, allowing users to monitor inflation levels accurately. For example, a common inflator can inflate a standard car tyre from flat to fully inflated in approximately 5-10 minutes. -
Inflating Bicycle Tyres:
Battery-operated tyre inflators are handy for cyclists who need to inflate their bike tyres on-the-go. These inflators are lightweight and portable, allowing cyclists to pack them for long rides. Proper inflation is essential for bike performance; under-inflated tyres can cause slower speeds and increased risk of flats. According to Cycling Weekly, many cyclists carry a compact inflator due to the convenience and efficiency it provides while out on trails or roads. -
Inflating Sports Equipment:
Inflating sports equipment such as footballs, basketballs, or soccer balls with a battery-operated tyre inflator is quick and efficient. Maintaining the correct air pressure in sports balls ensures optimal performance and reduces wear. Research from Hibbett Sports indicates that well-inflated balls perform better during play. Many inflators come with multiple nozzle attachments, catering to various sports equipment and allowing quick adjustments. -
Inflating Air Mattresses and Pool Toys:
Battery-operated tyre inflators are ideal for inflating air mattresses and pool toys for outdoor activities. Users can conveniently set up their sleeping arrangements or recreational equipment without manual pumping. A study from the Sleep Foundation highlights the benefits of properly inflated air mattresses for good sleep posture. These inflators can typically inflate a standard air mattress in just a few minutes, streamlining the setup process for camping or pool days.
How Do the Leading Brands Compare for Battery Operated Tyre Inflators?
Leading brands of battery-operated tyre inflators can be compared based on various criteria such as price, pressure output, battery life, and features. Below is a comparison of some of the top brands:
| Brand | Price | Max Pressure (PSI) | Battery Life (hours) | Features | Weight (lbs) | Warranty (years) |
|---|---|---|---|---|---|---|
| Brand A | $50 | 150 | 2 | Auto shut-off, LED light | 3.5 | 1 |
| Brand B | $65 | 120 | 3 | Digital display, multiple nozzles | 4.0 | 2 |
| Brand C | $45 | 100 | 1.5 | Compact design, carry case | 2.5 | 1 |
| Brand D | $70 | 160 | 4 | Fast inflation, Bluetooth connectivity | 5.0 | 2 |
What Should You Consider Before Buying a Battery Operated Tyre Inflator?
Before buying a battery-operated tyre inflator, consider factors such as power source, inflation speed, portability, pressure gauge accuracy, and added features.
- Power Source
- Inflation Speed
- Portability
- Pressure Gauge Accuracy
- Added Features
Considering these factors is essential for making an informed purchase.
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Power Source: The power source of a battery-operated tyre inflator refers to its method of operation. Most inflators are rechargeable or use disposable batteries. Rechargeable options are convenient and environmentally friendly. According to a 2022 study by Consumer Reports, inflators with lithium-ion batteries typically inflates tyres faster and last longer compared to ones using alkaline batteries.
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Inflation Speed: Inflation speed indicates how quickly the inflator can fill a tyre to the desired pressure. Typically measured in litres per minute (LPM), an inflator with higher LPM will save time. For example, some high-performance models can inflate a standard car tyre in under five minutes, as reported by AutoGuide in 2021. On the other hand, lower-end models may take longer, which could be inconvenient in emergencies.
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Portability: Portability refers to the ease of carrying and using the inflator. Lightweight models with a compact design are ideal for travel. A portable inflator often comes with a built-in handle or storage space for accessories and cables. According to an article by Gear Junkie in 2023, some top-rated portable inflators weigh less than two pounds, making them easy to store in car trunks.
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Pressure Gauge Accuracy: Pressure gauge accuracy is crucial for ensuring tyres are inflated to recommended levels. Some inflators feature digital displays, which provide precise readings. A study by Road & Track in 2022 found that inflators with digital gauges had a 90% accuracy rate versus 70% for analog designs. Misreading tyre pressure can lead to safety issues and increased fuel consumption.
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Added Features: Added features enhance usability and efficiency. Common features include built-in LED lights for night use, multiple nozzle attachments for different inflatables, and automatic shut-off to prevent over-inflation. According to a review from Car and Driver in 2023, inflators with automatic functionalities not only protect the tyre but can also increase longevity. Some models even include a USB port for charging devices, offering additional functionality on the go.