Pulling the trigger on a 48 amp hardwired EV charger is a multi-year commitment to your home’s electrical infrastructure. The difference between a charger that quietly delivers 11.5 kW every night and one that faults, drops WiFi, or just feels cheap comes down to the details inside the metal box—the grade of the cable, the quality of the thermal management, and the real-world reliability of the smart features. This guide separates the hardware that earns its keep from the units that make you wonder why you didn’t spend a little more.
I’m Mohammad Maruf — the founder and writer behind Gardening Beyond. I’ve spent years dissecting the specifications, warranty terms, and aggregated owner feedback for home EV charging equipment to identify the units that genuinely deliver on their 48-amp promise.
These chargers are built for the long haul, and we’ve combed through the market to find the true standouts among the best 48 amp ev charger models available today.
How To Choose The Best 48 Amp EV Charger
Not all 48-amp chargers are created equal. The difference between a seamless, fast overnight charge and a frustrating paperweight often comes down to three critical factors: the quality of the hardwired connection, the robustness of the smart features, and the real-world build quality that justifies the investment. Here’s what to look for.
Hardwired Installation & the 60-Amp Circuit
A true 48-amp continuous draw requires a dedicated 60-amp hardwired circuit. Plug-in 14-50 or 6-50 outlets are typically limited to 40 amps of continuous use by code. Any unit claiming 48 amps via a plug is either misleading or a fire risk. Ensure your electrician pulls 6 AWG or 4 AWG copper wire to a 60-amp double-pole breaker and terminates the charger directly. This single detail defines whether you get 11.5 kW or are stuck at 9.6 kW.
Smart Features: Scheduling, Load Management, and Connectivity
The ability to schedule charging during off-peak hours is where a smart charger pays for itself. Look for an app that lets you set separate weekday/weekend schedules and adjust current from 6 to 48 amps. For homes with multiple EVs or a service panel near capacity, load-balancing functionality (like Grizzl-E’s Intelligent Power Distribution or Tesla’s Power-Share) is a game-changer. A charger that relies solely on Bluetooth can be a headache; a strong 2.4 GHz WiFi radio is essential for consistent remote access, especially in garages with thick walls.
Build Quality, Cable, and Certifications
For an outdoor or garage unit, an IP66 or NEMA 4X weatherproof rating is non-negotiable. The charging cable should be flexible in sub-freezing temperatures—a common failure point on budget units. A 25-foot cable offers the most flexibility for mounting placement. Look for UL 2594 and Energy Star certifications to ensure safety and eligibility for the 30% Federal Tax Credit. The connector holster should securely hold the handle and prevent the cable from dragging on the ground.
Quick Comparison
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| Model | Category | Best For | Key Spec | Amazon |
|---|---|---|---|---|
| WOLFBOX E50(48) | Smart Value | First-time owners wanting a feature-rich unit | 48A / 25ft / RFID / LCD | Amazon |
| EVIQO EVIPOWER NACS | Native NACS | Tesla owners wanting a seamless OEM-level experience | 48A / 25ft / IP66 / NACS | Amazon |
| Lectron Nexus | NACS Focus | Pure Tesla households on a budget | 48A / 23ft / IP66 / J3400 | Amazon |
| EMPORIA Level 2 | Smart Ecosystem | Users with Emporia Vue energy monitors | 48A / 25ft / UL / WiFi | Amazon |
| Grizzl-E Ultimate 48A | Durable Build | Harsh weather and simple, reliable operation | 48A / 25ft / Metal / OCPP | Amazon |
| Autel MaxiCharger AC Elite | Flexible Setup | Owners with smaller breakers needing adjustable amperage | 50A / 25ft / NEMA 4X / BT+WiFi | Amazon |
| ChargePoint HomeFlex | Network Access | Frequent travelers needing public charging network access | 50A / 23ft / NACS / UL | Amazon |
| Tesla Universal Wall Connector | Dual Plug | Multi-EV households with NACS and J1772 vehicles | 48A / 24ft / NACS+J1772 | Amazon |
| DEWALT DXPAEV048 | Pro Build | Users wanting rugged, USA-built reliability | 48A / 25ft / NEMA 4X / LCD | Amazon |
| Wallbox Pulsar Plus | Compact Design | Garages where space is at a premium | 48A / 25ft / UL / Energy Star | Amazon |
| Generac Level 2 Plus | Power Boost | Homes with limited electrical panel capacity | 48A / 25ft / NEMA 4 / WiFi | Amazon |
In‑Depth Reviews
1. WOLFBOX Level 2 EV Charger 48 Amp
The WOLFBOX E50 strikes a remarkable balance between smart features and straightforward value. The built-in 4.3-inch LCD screen is a standout, providing real-time readouts on charging rate, time, voltage, and total energy delivered—all without needing to pull out your phone. The included RFID card adds a layer of security, ensuring only authorized users can initiate a charge, which is a rare find at this tier.
Owner reports confirm the 48-amp output delivers a measured 38 miles per hour on a 2025 Chevy Equinox EV, and the ability to configure the charger down to 40 amps via internal DIP switches makes it flexible for homes with smaller wiring. The CSA certification to UL2594 standards provides peace of mind, and the NEMA 4X waterproof housing handles outdoor installation without a sweat. The app, while functional for scheduling and start/stop, is described as basic compared to premium competitors.
The 25-foot cable offers generous reach for most garage layouts, though the cable is noted to run warm at full 48A draw, reaching a max of 117°F, which is within normal operating range. For buyers who want a full feature set—scheduling, voice control via Alexa, and a clear display—without stepping into the premium price tier, the WOLFBOX is exceptionally hard to beat.
What works
- Integrated LCD screen provides immediate charging status and energy data without needing the app.
- RFID card security prevents unauthorized use, a practical feature for shared driveways.
- 25-foot cable gives excellent flexibility for mounting placement and vehicle positioning.
What doesn’t
- The companion app is functional but lacks the polished reporting and granular controls found on more expensive units.
- The hardwire pigtail is short, which may restrict where on the wall you can mount the unit relative to the breaker panel.
2. EVIQO NACS Charger for Tesla 48 Amp
The EVIQO EVIPOWER is engineered from the ground up for native NACS (Tesla) compatibility. This means Tesla owners get plug-and-play operation with the built-in dock-release button, eliminating the need for an adapter. The unit’s 48-amp output is supported by a robust IP66 and NEMA 4 weatherproof enclosure, making it one of the most weather-resistant chargers available. Owners consistently praise the flexible cable and the high-visibility fluorescent holster, which glows after exposure to light for easy nighttime plug-in.
The smart app allows full control, including adjustable amperage from 6 to 48 amps, off-peak scheduling, and detailed session summaries showing kWh and cost. A standout feature is the easy-access side reset button, which clears faults without having to open the unit or flip the breaker—a significant convenience. The 3-year warranty and U.S.-based support add further confidence. The 25-foot cable and 40-inch input whip provide plenty of reach for any installation.
One subtle but appreciated design choice is the steel shielding on the mainboard, which protects the internal electronics from interference and damage. On the downside, the soft plastic on the plug can scratch more easily than metal or hard plastic housings. Overall, for a Tesla owner who wants a seamless, fully-featured, and future-proofed home charging solution, the EVIQO is a top-tier choice.
What works
- Native NACS connector integrates perfectly with Tesla’s charging port button and charging ecosystem.
- High-build quality with IP66/NEMA 4 weatherproofing, steel mainboard shielding, and a fluorescent holster.
- Side reset button is a brilliantly practical feature for clearing faults without disconnecting power.
What doesn’t
- The connector’s plastic housing shows scuffs and scratches more readily than competing units.
- Requires a 2.4 GHz WiFi frequency band, which can be a connectivity hurdle for some networks.
3. Lectron Tesla NACS Level 2 EV Charger
Lectron’s Nexus charger is a focused, no-nonsense option for Tesla owners. It delivers a full 48 amps (11.5 kW) via a native NACS connector that is SAE J3400 compliant, making it compatible with current and future NACS-based EVs. The build quality is notably high, with a metal housing that feels more durable than many plastic units. Owners consistently report charging speeds exceeding 40 miles per hour on their Model Y and Model 3, and the included Tesla-style holder keeps the cable organized.
Safety certifications are comprehensive—UL 2594, UL 2231, and UL 2251—which is critical for insurance and peace of mind. The 23-foot cable is a touch shorter than the 25-foot standard but still offers plenty of reach for most single-car garage setups. The unit is hardwired only, which is the correct approach for 48 amps, and the installation instructions are clear. Owners note that while it requires an electrician, the setup process is straightforward.
Where the Nexus truly shines is in its simplicity. There is no app, no WiFi, and no superfluous smart features. It is a pure, dedicated charger that gets out of your way and just works. For owners who want a bulletproof, affordable, and future-ready charger for their Tesla, the Lectron Nexus is a compelling, no-fuss alternative to the Tesla Wall Connector. The 3-year warranty adds a nice layer of assurance.
What works
- Rock-solid build quality with a metal housing that feels built to last for decades.
- Simple, app-free operation eliminates the potential for connectivity or software glitches.
- Full suite of UL certifications (2594, 2231, 2251) confirms rigorous safety testing.
What doesn’t
- Lack of a smart app means no scheduling, cost tracking, or remote monitoring capabilities.
- The 23-foot cable is functional but slightly shorter than the 25-foot standard found on many competitors.
4. EMPORIA Level 2 EV Charger 48 Amp
Emporia’s Level 2 charger is the centerpiece of a brilliant home energy management system. It’s a fully UL-listed and Energy Star-certified unit that delivers a true 48-amp hardwired charge at 11.5 kW. The app is widely considered one of the best in the industry for cost tracking and reporting, allowing you to see exactly how much every single charge and every month costs you. The integration with Emporia’s Vue energy monitor is where it becomes a strategic tool, enabling solar-only charging and demand limiting.
Owners praise the straightforward installation and the responsive tech support. The charger features a robust 25-foot cable and a secure J1772 connector that clicks in firmly. For J1772 EV owners (Chevy Bolt, Ford Mustang Mach-E, VW ID.4, etc.), it’s a perfect match. The unit automatically reconnects and resumes charging after a power outage, a small but critical detail for reliability. The hardwire whip is pre-installed, simplifying the electrician’s job.
The main appeal, however, is the ecosystem. If you already have or plan to add an Emporia Vue, you unlock features like load management across multiple chargers and circuits, which can save thousands on utility tariffs. Without the Vue, the charger still performs admirably on its own. For a buyer who values detailed data and future energy management, the Emporia charger is a strategic purchase that pays for itself.
What works
- Best-in-class app with detailed cost tracking, scheduling, and energy management features.
- Seamless integration with Emporia Vue for solar-only charging and dynamic load management.
- UL and Energy Star certified, meeting the highest safety standards and qualifying for tax credits.
What doesn’t
- The full potential of the charger is only unlocked with the purchase of the separate Emporia Vue monitor.
- Not compatible with native NACS (Tesla) connectors without an adapter, which can be an added expense.
5. Grizzl-E 48A Ultimate Level 2 EV Charger
The Grizzl-E Ultimate 48A is a purpose-built piece of equipment designed for maximum durability. Its cast aluminum NEMA Type 4 enclosure is practically indestructible and handles extreme heat, cold, rain, and snow without issue. Made in Canada, it comes with a 25-foot heavy-duty cable that is thicker and more robust than most. This is the charger you buy if you want to install it once and forget about it for the next decade.
The smart features, powered by Grizzl-E Connect, are functional but not the star of the show. The app allows for real-time monitoring, scheduling, and energy consumption tracking. The unit also supports premium OCPP (Open Charge Point Protocol) for advanced integration, though this requires a one-time activation fee. A standout feature is the Intelligent Power Distribution, which can balance charging power across multiple Grizzl-E chargers on the same circuit—perfect for multi-EV households.
Owner feedback is overwhelmingly positive about its reliability, but some have noted that the plastic cable holder and handle latching feel cheap compared to the premium metal housing. The app is also less polished than some competitors. If you prioritize a simple, rugged, and safe charger that will outlast your EV, the Grizzl-E is the clear choice. The 3-year warranty and Canadian build quality justify its mid-range price.
What works
- Heavy-duty aluminum cast enclosure is practically bulletproof and ideal for harsh outdoor environments.
- Intelligent Power Distribution allows for efficient load sharing between multiple chargers on a single circuit.
- Can operate completely without the app, providing a simple plug-and-charge experience.
What doesn’t
- The plastic cable holder and handle holster feel noticeably less premium than the charger’s metal body.
- The app is functional but lacks the polished interface and granular reporting of top-tier competitors.
6. Autel MaxiCharger AC Elite 50 Amp
The Autel MaxiCharger AC Elite stands out for its exceptional flexibility. While it’s marketed as a 50-amp charger, it truly shines for buyers who may have a smaller breaker. The unit features both an internal dial and an app-based current selector, allowing you to configure it for any circuit from 15 to 50 amps. This makes it a rare find for owners of Chevy Bolts or other EVs that lack in-car L2 amperage control; you can simply dial the charger down to 32 amps for a 40-amp breaker.
The build quality is excellent, with a sleek, compact design that looks more like a modern appliance than an industrial tool. The 25-foot cable is notably thick and remains flexible in sub-freezing temperatures, a testement to Autel’s automotive diagnostic engineering background. The app, Autel Charge, is comprehensive, providing cost analysis, charging history, and reliable scheduling. Bluetooth and WiFi connectivity ensure the charger stays online, and OTA firmware updates keep it current.
Owners consistently praise the responsive U.S.-based customer service. The NEMA Type 4 rating makes it safe for all-weather outdoor installation. The only minor gripes are that the charger is slightly heavy, and the initial app setup can be a bit tricky if you don’t link it to your account correctly. For a buyer who needs a versatile, future-proof, and premium-feeling charger that can adapt to different homes and vehicles, the Autel is a superb choice.
What works
- Highly configurable amperage via both an internal dial and the app, supporting circuits from 15 to 50 amps.
- Excellent build quality with a sleek design and a cold-weather flexible cable that remains pliable in extreme cold.
- Comprehensive app with cost tracking, scheduling, and reliable remote access via WiFi and Bluetooth.
What doesn’t
- Initial app setup can be finicky and may require a factory reset if the account linking step is missed.
- The unit is slightly heavier than average, which can make mounting a bit more awkward.
7. ChargePoint HomeFlex Level 2 EV Charger
ChargePoint brings its vast public charging network expertise to the home with the HomeFlex. This unit is a system-level purchase. The app integrates seamlessly with the ChargePoint network, giving you access to over 274,000 charging stations across North America alongside your home charger. The charger itself is a capable 50-amp unit (hardwired, required for 48A continuous) that delivers up to 45 miles of range per hour. The NACS connector option makes it especially appealing for Tesla owners.
The hardware is well-built with a UL certification and a cold-resistant cable. The app is the real draw, offering smart scheduling, reminders, and integration with smart home devices. Owners report that the app is intuitive and provides excellent data on charging history and cost. The 23-foot cable is a bit shorter than the 25-foot standard, but for most installations it’s still adequate. The unit is designed for easy hardwired installation by a qualified electrician.
The primary drawback reported by owners is inconsistent WiFi reliability on older revisions of the hardware. Some users experienced the charger dropping off the network after a few days, requiring a warranty replacement. ChargePoint’s customer service was responsive, but the process could be slow. If you get a current-production unit (Rev 5 or later), the issue appears to be resolved. For the ecosystem and network value, it’s a strong option.
What works
- Integrated access to the massive ChargePoint public charging network through a single, excellent app.
- Well-designed smart features including scheduling, reminders, and smart home integration.
- UL-certified with a durable, cold-resistant cable for reliable year-round performance.
What doesn’t
- Older hardware revisions had documented WiFi connectivity issues that required replacement.
- The 23-foot cable is slightly shorter than the industry standard 25-foot length, limiting installation options in larger garages.
8. Tesla Universal Wall Connector 48 Amp
Tesla’s Universal Wall Connector is the ultimate solution for multi-EV households. Its standout feature is the built-in adapter mechanism that seamlessly transitions between the NACS (Tesla) and J1772 connector types. This means the same charger can serve your Tesla today and your family’s new Ford Mustang Mach-E tomorrow. The unit delivers a full 48 amps (11.5 kW) and supports Power-Share, allowing up to six units to share a single circuit, making it incredibly efficient for home fleets.
The build quality is quintessential Tesla—sleek, minimal, and well-engineered. The 24-foot cable is durable and the connector feels premium. Installation is straightforward for an electrician, and the unit supports OTA firmware updates for continuous improvement. The Tesla app provides robust remote monitoring, control, and scheduling. Owners report flawless operation with both Tesla and non-Tesla vehicles, with charging speeds averaging 44 miles per hour.
The premium price is justified by the integrated dual-connector design and the Power-Share functionality, which eliminates the need for expensive panel upgrades. A minor frustration is that the app can’t remotely stop a charge for non-Tesla vehicles. If you own a Tesla now and plan to stay within the ecosystem, the standard Wall Connector is cheaper. But for a household juggling different plug standards, or one that wants to be ready for any EV, the Universal Wall Connector is a perfect, future-proof choice.
What works
- Built-in NACS to J1772 adapter mechanism eliminates the need for an external dongle, ensuring a clean install.
- Power-Share functionality allows up to six units on a single circuit, perfect for multi-car homes.
- Seamless integration with the Tesla app and OTA firmware updates for long-term reliability.
What doesn’t
- Premium price point is justified by features but is significantly higher than single-connector alternatives.
- The Tesla app cannot be used to stop a charging session for non-Tesla vehicles using the J1772 adapter.
9. DEWALT Electric Vehicle Level 2 EV Charger 48 Amp
DEWALT enters the EV charging arena with a characteristic focus on rugged construction and job-site reliability. The DXPAEV048 is built in the USA and features a reinforced cage housing with a rubberized, anti-slip charging gun that’s clearly designed to withstand heavy daily use. The unit is CSA certified with a NEMA 4X and IP66 rating, meaning it’s fully protected against water ingress, dust, and corrosion. The built-in LCD screen provides key charging info at a glance.
Smart features are handled by the dedicated DEWALT App, which offers remote start/stop, scheduling, and energy tracking. The app is straightforward and allows for separate weekday/weekend schedules, a boon for time-of-use rate optimization. The charger is adjustable from 12 to 48 amps, offering flexibility for different electrical setups. The 3-year warranty and 24/7 technical support are backed by DEWALT’s nationwide service network, which includes a partnership with Qmerit for professional installation.
Owners generally report excellent performance, with one note that the unit can fault if you try to pre-condition the cabin while plugged in and not actively charging. The app, while functional, is less feature-rich than some competitors. For buyers who trust the DEWALT brand for its tool durability and want a charger that looks and feels like it belongs in a professional shop, this is a fantastic option. The build quality is noticeable the moment you pick it up.
What works
- Rugged, USA-built construction with a reinforced cage and rubberized, anti-slip charging handle.
- CSA certified with NEMA 4X/IP66 rating for maximum weather and dust protection.
- User-friendly app with separate weekday/weekend scheduling for optimizing off-peak charging.
What doesn’t
- Pre-conditioning the vehicle cabin while connected but not charging can trigger a fault that requires a power cycle.
- The app and software are less polished and feature-rich compared to Emporia or Autel.
10. Wallbox Pulsar Plus Level 2 EV Charger 48 Amp
The Wallbox Pulsar Plus is a marvel of compact engineering. Its dimensions (3.9” x 7.8” x 7.9”) are significantly smaller than most competitors, making it the ideal choice for garage walls where space is tight. Despite its small size, it delivers the full 48 amps (11.5 kW) and features a sleek, minimalist design that looks more like a piece of modern art than a vehicle charger. It is UL and Energy Star certified and assembled in the US.
The charger supports both WiFi and Bluetooth connectivity, allowing for reliable remote control via the myWallbox app. The app is clean and intuitive, offering scheduling, energy usage data, and adjustable current intensity. The 25-foot cable is well-made and remains flexible. The unit is designed for hardwired installation only at this amperage. Premium OCPP features are also available, making it a future-proof choice for fleet or V2G (vehicle-to-grid) applications.
Owner feedback is largely positive, with praise for its easy installation and clean aesthetics. The primary concern is customer service responsiveness, with some users reporting frustrating experiences getting support. There are isolated reports of compatibility issues with the Tesla adapter. When purchased at a sale price, the value proposition is strong. For a buyer who values aesthetics and space-saving above all else, and who is comfortable with potential support latency, the Wallbox Pulsar Plus is an excellent compact powerhouse.
What works
- Ultra-compact footprint is perfect for garages with limited wall space or where aesthetics are a priority.
- Sleek, award-winning design that integrates beautifully into modern homes.
- Full UL and Energy Star certification, plus OCPP support for advanced energy management.
What doesn’t
- Customer service responsiveness has been criticized by some owners as being slow or unhelpful.
- Isolated reports of compatibility issues when pairing with a NACS-to-J1772 adapter for Tesla vehicles.
11. Generac Level 2 Plus EV Charger 48 Amp
Generac applies its decades of home-energy expertise to the EV charger market with the Level 2 Plus. The marquee feature here is Power Boost Technology, which dynamically monitors your home’s total electrical load and adjusts the charger’s output to prevent your main breaker from tripping. This is a killer feature for older homes with limited panel capacity, allowing you to install a 48-amp charger without a costly panel upgrade. It also supports Power Sharing, enabling multiple chargers on the same circuit.
The charger is compatible with all J1772 EVs out of the box (a Tesla adapter is sold separately). The build quality is solid, with a compact NEMA 4 ABS enclosure designed for indoor or outdoor mounting. The 25-foot cable provides generous reach. The Generac EV Charging app handles scheduling, remote monitoring, and cost tracking seamlessly. It’s also compatible with Alexa and Google Home for voice control. The 3-year warranty and Generac’s vast installation network provide strong backing.
The main drawback reported by a few users is that the initial app setup and Bluetooth pairing can be frustrating, sometimes requiring multiple attempts before it connects correctly. Once connected, however, performance is stable. For a buyer whose electrical service panel is already near capacity and who wants to avoid the high cost of a service upgrade, the Generac Level 2 Plus is a uniquely valuable, technologically advanced solution that solves a specific and expensive problem.
What works
- Power Boost technology actively manages the home’s electrical load, preventing main breaker trips and avoiding costly panel upgrades.
- Power Sharing capability allows multiple chargers on a single circuit, ideal for multi-EV families.
- Backed by Generac’s 65-year reputation and a vast network of authorized installers and service technicians.
What doesn’t
- Initial app setup and Bluetooth pairing process can be finicky and time-consuming for some users.
- The premium price point places it at the top end of the market, with features that not every home will need.
Hardware & Specs Guide
Hardwired vs. Plug-In at 48 Amps
The 80% continuous load rule is non-negotiable. A 48-amp continuous draw requires a 60-amp breaker. A 14-50 or 6-50 plug is only rated for 50 amps max, meaning safe continuous use is limited to 40 amps. Any charger claiming 48 amps via a plug is incorrect and unsafe. True 48-amp chargers must be hardwired, terminating directly into the unit with the appropriate gauge wire.
NEMA 4X vs. NEMA 4 vs. IP66
For outdoor installation, these weather ratings are critical. NEMA 4X offers protection against corrosion, rain, sleet, snow, and hose-directed water. It is the standard for coastal or wet environments. NEMA 4 is similar but lacks corrosion protection. IP66 provides dust-tight and powerful water-jet protection. A charger installed outside in the Pacific Northwest or Gulf Coast should have NEMA 4X or IP66.
Load Balancing and Energy Management
If your home’s electrical service panel is near its capacity (e.g., 100 amps), load management features are essential. Units like the Generac (Power Boost) and Grizzl-E (Intelligent Power Distribution) automatically reduce charging current when other high-draw appliances (dryer, AC) are running. The Emporia system integrates with an energy monitor to limit draw based on the whole-house load. This prevents nuisance breaker trips and avoids expensive panel upgrades.
Federal Tax Credit Eligibility
The 30% Federal Tax Credit (up to ) applies to EV chargers installed in a residence through 2032. To qualify, the charger must be placed in service in the tax year and meet safety standards. Look for UL 2594 or Energy Star certification, which ensures eligibility. Many utility companies also offer additional rebates, often making a premium charger the more economical choice in the long run.
FAQ
Can I install a 48 amp EV charger on a 50 amp breaker?
What is the real-world charging speed of a 48 amp level 2 charger?
Do I really need an electrician for a hardwired 48 amp charger?
What is the best 48 amp EV charger for a Tesla?
Final Thoughts: The Verdict
For most homeowners, the best 48 amp ev charger is the WOLFBOX E50 because it delivers a complete package of smart features—RFID security, a clear LCD screen, and reliable charging—at a price that doesn’t require a second mortgage. If you own a Tesla and want a seamless, native NACS experience with excellent build quality, grab the EVIQO EVIPOWER. And for the buyer whose electrical panel is already maxed out and wants to avoid a costly upgrade, nothing beats the Generac Level 2 Plus with its Power Boost technology.