Key Takeaways
- The Ring RTC4000 inflates a 15" car tyre from flat to 35 PSI in under 6 minutes with adequate performance for basic needs.
- The device includes features like digital presets, auto-stop functionality, and can work for cars, bikes, sports gear and inflatables with varying degrees of success.
- The 5000mAh battery (2500mAh x 2) handles multiple tyres per charge with USB-C charging convenience and includes an LED light for night use.
- At £59.99, the RTC4000 sits in the mid-range price category but faces strong competition from better-equipped alternatives.
- Ordiniq's AutoPump delivers superior 150 PSI performance with better UK support and proven reliability at a more competitive price point.
Cordless Convenience from Ring
Flat tyres strike at the worst times when you're late, when it's raining, or miles away from help. When they happen, you need a reliable inflator that works consistently every time. The Ring RTC4000 Cordless Tyre Inflator attempts to solve these problems with battery power, though several limitations become apparent during regular use.
The RTC4000 is Ring's approach to portable inflation, offering basic cordless functionality for occasional use. While it handles routine tyre maintenance, the unit faces challenges when dealing with demanding applications or extended use scenarios that reveal its budget-oriented construction.
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What Customers Say ★★★★★ "I was at first very skeptical about using a new product like Autopump with my 2018 Ford Focus. But after getting a flat tyre due to a nail, it got me inflated quickly and allowed me to get to a garage and have the tyre repaired. Definitely a thumbs up from me" - Gregg D. Bristol, UK Try It Risk-Free for 90 Days Experience the AutoPump with zero worries. If it doesn't save you from a tyre emergency within 90 days, we'll refund your purchase—no questions asked. FREE BONUSES: Tyre Pressure Monitoring Caps (£19.99 Value) + Tyre Safety eBook (£10 Value) + FREE Shipping Across the UK via Royal Mail and Evri *Ordiniq also offers a Handheld Wired Car Vacuum Cleaner and a Tyre Repair Kit—great extras to keep in your boot for added peace of mind. |
Technical Specifications & Design
Power System & Battery Performance
The RTC4000 features a dual 2500mAh lithium-ion battery system (5000mAh total capacity) providing 12V DC or 7.4V DC input with 120W power output. The unit includes both USB-C charging capability via the included 1m cable and a 3m 12V DC cable for use when the battery isn't charged.
The battery system requires full charging before each use for optimum performance, and Ring recommends charging every 3 months if left unused to maintain battery health. The unit should be stored above 0°C to prevent battery damage.
Physical Design & Portability
The unit measures 166 x 112 x 90mm (HxWxD) and weighs 0.95kg, making it reasonably portable for boot storage. The compact size allows it to fit in standard glove compartments or door pockets, and the included smart storage case provides organisation for the inflator and accessories while allowing charging through the bag.
The onboard storage system includes a 60cm air hose that stores directly on the unit, which reduces loose components during transport and storage.
Pressure Range & Performance Limits
The RTC4000 provides a pressure measurement range of 0–120 PSI / 0–8.3 BAR, which handles standard automotive applications adequately but limits versatility for high-pressure applications requiring more capability.
The programmable pressure setting works with auto-stop functionality to prevent over-inflation, though accuracy can vary by ±1 PSI depending on conditions. The unit also operates at 90 dB during use, which is a moderate noise level for this category of portable inflator.
Inflation Speed & Capability
According to Ring's specifications, the RTC4000 inflates a 13-inch tyre from flat to 35 PSI in under 3.5 minutes, which places it in the moderate speed category for portable inflators. The unit handles standard car applications requiring 30–35 PSI adequately within its designed parameters.
However, the 120 PSI maximum pressure limitation affects versatility for high-pressure applications like road bike tyres or specialised equipment that require pressures approaching or exceeding this limit.
Digital Control System Features
The RTC4000's memory function can store up to 4 different tyre pressures in PSI, BAR, or kPA formats, which helps with routine maintenance of vehicles requiring different pressure settings.
The backlit digital screen provides pressure readings and remains visible in various lighting conditions, though visibility can be challenging in bright sunlight or at awkward angles during roadside use.
Other Accessories
LED Lighting System
The built-in LED light provides illumination for the tyre valve area during use, which helps with visibility in dark conditions. The light offers adequate brightness for basic maintenance tasks, though it operates in a single mode without additional functionality.
Attachment System & Versatility
The RTC4000 includes a 3-piece adapter kit covering basic inflation needs: a needle adapter for sports balls, a Presta valve adapter for road bikes, and a conical adapter for air mattresses and small inflatables.
The adapters are stored in the included storage case, though the basic construction and limited variety restrict versatility compared to more comprehensive attachment systems.
Deflator Valve Function
The integrated deflator valve allows pressure reduction when tyres are over-inflated, providing adjustment capability without requiring separate tools. This feature helps achieve precise pressure levels, though the process can be slow for significant pressure reductions.
Price & Value Analysis
Current Pricing & Availability
The Ring RTC4000 costs £59.99, positioning it in the mid-range cordless inflator category. Ring offers free delivery on orders over £25 and provides an extra year's guarantee when purchasing directly from their official shop.
Prices for the Ring RTC4000 vary among retailers. For instance, some eBay sellers list the unit at £71.94, with bulk purchase discounts reducing the cost to £68.34 each for two units, £66.90 each for three, and £64.75 each when buying four or more. Meanwhile, other retailers like Autoshop offer the inflator at a lower price of approximately £60.17.
Package Contents & Value
The complete package includes the inflator unit with digital display, a smart storage case that allows charging while stored, a 1m USB-C charging cable, a 3m 12V DC power cable for emergency use, and a 3-piece adapter kit for different applications.
While this seems comprehensive, the 120 PSI limitation, basic construction quality, and limited feature set affect overall value compared to alternatives offering superior specifications at similar pricing points.
*Note: Pricing and/or product availability mentioned in this post are subject to change. Please check the retailer's website for current pricing and stock information before making a purchase.
Get Better Cordless Performance With Ordiniq
While the RTC4000 handles routine tasks, the AutoPump delivers professional-grade performance that transforms roadside emergencies into manageable situations.
The Ring RTC4000 works for basic applications, but what happens when you need reliable performance that goes beyond just meeting minimum requirements? That's where the fundamental differences between basic functionality and professional-grade engineering become obvious—which is exactly what our AutoPump offers.
Superior Pressure Capability vs. Limited Range
The RTC4000's 120 PSI maximum pressure restricts its versatility significantly, especially for high-pressure applications like road bike tyres, specialised equipment, or emergency situations requiring maximum capability.
Our AutoPump's 150 PSI capacity provides 25% more pressure capability, ensuring you can handle any inflation task confidently without worrying about equipment limitations.
This extra capability means the AutoPump operates effortlessly and provides better performance and longer equipment life through reduced strain on internal components.
Advanced Engineering vs. Compromise-Based Design
The RTC4000's dual 2500mAh battery system might sound impressive, but splitting capacity across two smaller cells often creates consistency issues and thermal management challenges.
Our AutoPump's advanced 3900mAh single-cell design provides more reliable power delivery and better thermal characteristics, eliminating the performance variations that affect dual-battery systems.
Professional Features vs. Basic Functionality
The RTC4000's single-mode LED provides basic illumination, but our AutoPump's dual lighting system offers both bright white illumination for precision work and red emergency SOS flashing for roadside visibility. These aren't just convenient features, they're essential safety tools that can make the difference during dangerous situations.
The AutoPump's multiple charging options (USB-C for portable charging, UK plug adapter, and 12V car adapter) ensure availability regardless of circumstances, unlike single-charging-method alternatives that leave you vulnerable when power sources aren't available.
Precision That Actually Delivers
The RTC4000's basic digital system provides adequate readings for routine applications, but the AutoPump's precision engineering maintains accuracy across the entire pressure range with intelligent auto shut-off that works consistently every time. No more worrying about whether the auto-stop function will work properly or wondering if pressure readings are accurate enough for your specific needs.
Investment Protection Through Prevention
The RTC4000 costs £59.99 for basic functionality that works when conditions are ideal, but the AutoPump provides superior performance, professional-grade features, and comprehensive UK support for comparable pricing.
Plus, you receive free tyre pressure monitoring caps worth £19.99 that work proactively to prevent emergencies before they develop.
Proven Performance vs. Hopeful Expectations
Over 10,000 UK drivers have tested the AutoPump in real-world conditions and chosen reliability over compromise. From emergency roadside situations to routine maintenance, the AutoPump delivers professional-grade performance that transforms how you approach tyre care and roadside preparedness.
Our 24/7 UK customer support means talking to people who understand British roads, weather, and the unique challenges UK drivers face daily.
We also have a 90-day money-back guarantee that provides genuine time to test the AutoPump across different seasons and usage scenarios, not just a brief evaluation period that barely covers initial impressions.
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Frequently Asked Questions (FAQ)
How long does the Ring RTC4000 battery last between charges?
The 5000mAh battery system (2 x 2500mAh units) handles multiple tyre inflations per charge, though exact numbers vary with tyre size and pressure requirements. Ring recommends charging fully before each use and every 3 months if left unused to maintain optimal battery performance.
Can the Ring RTC4000 inflate SUV and truck tyres?
The RTC4000 provides a pressure measurement range of 0–120 PSI / 0–8.3 BAR, which handles standard automotive applications adequately but limits versatility for high-pressure applications requiring more capability.
Does the Ring RTC4000 come with adapters for bikes and inflatables?
Yes, the package includes a 3-piece adapter kit: needle adapter for sports balls, Presta valve adapter for road bikes, and conical adapter for air mattresses and small inflatables.
What's the warranty period for the Ring RTC4000?
The Ring RTC4000 cordless tyre inflator comes with a standard 12-month warranty. But when you buy directly from Ring or register the product with Ring Automotive, you can extend this to a 2-year warranty.
How does Ordiniq's AutoPump compare to the Ring RTC4000?
Ordiniq’s AutoPump significantly outperforms the RTC4000 in critical areas. While the RTC4000 maxes out at 120 PSI, the AutoPump provides 150 PSI capability for superior versatility. Our advanced 3900mAh single-cell battery provides more reliable power delivery than the RTC4000's dual 2500mAh system, especially for demanding applications.
Over 10,000 UK drivers trust the AutoPump because it combines superior pressure capability, professional-grade features, and comprehensive UK support with a 90-day money-back guarantee that provides genuine time to test performance across different scenarios.
