The puff counter function helps users track device usage more accurately.Different models and firmware versions may apply different reset methods. This guide summarizes the puff counter reset procedures across devices and chipsets for easy reference. • SXmini SL Class V2 Enter Menu → Select “Puff Reset”. • SXmini G Class V2 Enter Menu → Select “Puff Reset”. • YiHi SX600J Chipset Charging the device automatically resets the puff counter. • YiHi SX735J Chipset Enter Menu → Select “Puff Reset”. • SXmini Puremax 2 • Firmware before 20250227: Charging resets the puff counter.• Firmware 20250227 and later: Long press the fire button for 5 seconds without pod installed. • SXmini MQ Class • Version V49 and earlier: Charging resets the puff counter.• Version V50: Long press the fire button for 5 seconds without atomizer attached. • SXmini Tinder Wave Enter Menu → Select “Puff Reset”. • SXmini MQ Plus Long press the fire button for 5 seconds without atomizer attached. • SXmini Nex I Long press the fire button for 3 seconds without pod installed. Firmware Version Information Firmware version details may appear in different locations depending on the device model: • Inside the system menu under version information• Briefly displayed on the boot screen when powering on If you are unsure about your firmware version, please refer to the product manual or contact official support.
When discussing vaping performance, many people focus on battery size or wattage numbers.However, the true foundation of consistent flavor is voltage control — and this is where SXmini devices powered by YiHi chips make a difference. Voltage control determines whether your device feels powerful at full battery but weak later — or smooth and consistent from the first puff to the last. 1. Battery Voltage and Puff Performance In every vape device, the battery voltage naturally drops as it discharges: • Full battery: approximately 4.2V• Mid battery: approximately 3.7V• Low battery: approximately 3.3V If the device does not regulate voltage properly, output power decreases as voltage drops. This is why many standard vape devices feel strong when fully charged but gradually become weaker during use. SXmini devices use advanced YiHi chip technology to manage this voltage change intelligently. 2. What Is DC-DC Voltage Regulation? DC-DC regulation converts one DC voltage level into another stable DC voltage. There are three primary types: • Buck (Step-Down): lowers voltage when battery voltage is higher than required• Boost (Step-Up): increases voltage when battery voltage is lower than required• Buck-Boost (Step-Up + Step-Down): adjusts voltage in both directions Buck-Boost is the most complete solution because it stabilizes output across the entire battery range. Most SXmini devices integrate true Buck-Boost DC-DC regulation developed by YiHi, ensuring stable output from full battery to low battery. 3. What Is PWM and Why Is It Different? PWM (Pulse Width Modulation) does not truly change voltage.Instead, it rapidly switches power on and off to simulate an average output. • Advantage:…
Power Mode · Temperature Control · PURE Mode In the vaping industry, different devices may operate using different modes.These modes are designed for different user habits and experience levels, not to replace one another. This article explains three commonly discussed vaping modes in a clear and beginner-friendly way. Power Mode Manual output control What it meansPower Mode allows the user to manually set the output power (wattage). How it behaves• Higher wattage produces stronger vapor• Lower wattage creates a smoother draw• The device delivers power according to the selected value Who it is for• Users who already know their preferred wattage• Users who enjoy manual adjustment• Traditional vaping users Key ideaPower Mode focuses on user control over power output. Temperature Control Mode Limiting maximum coil temperature What it meansTemperature Control (TC) Mode allows the user to set a maximum coil temperature. How it behaves• Heating is reduced or stopped once the temperature limit is reached• Helps prevent overheating and dry hits• Requires compatible coils and correct configuration Who it is for• Experienced users• Users familiar with coil materials and settings• Users who want precise control over heating behavior Key ideaTemperature Control focuses on user control over temperature limits. PURE Mode Intelligent automatic heating control What it meansPURE Mode refers to an intelligent control system rather than a single adjustable parameter. Instead of asking the user to set power or temperature, the system:• Monitors heating behavior in real time• Automatically adjusts output• Maintains stable heating conditions• Helps reduce the risk of dry hits and burnt taste No temperature knowledge or manual…
At SXmini, we believe a strong brand is not built only on success, but also on how it responds to challenges. Over the years, SXmini has worked with partners, distributors, retailers, and users across many countries and markets. From the beginning, our goal has always been clear: to create reliable, well-designed vaping products powered by advanced YiHi chipset technology, while listening closely to real user feedback. Like any brand focused on long-term growth, we have also faced moments that tested us. Learning from Early Product Challenges In the early stage of the PX Cartridge (Black version), we did not fully consider the wide differences in e-liquid formulas used in different countries. As an open pod system, its compatibility with certain e-liquids was not ideal in some markets. Instead of ignoring these issues, we collected feedback from partners and users worldwide. Our engineering team made continuous improvements, adjusted internal structures, and tested multiple revisions. These efforts finally led to the release of the PX Pro 2 Cartridge, offering much better stability and broader e-liquid compatibility. This process reminded us that real product improvement always starts with listening. Taking Responsibility and Improving Quality Control We also openly acknowledge an issue that occurred with the first batch of Puremax 2, where a battery defect from an upstream supplier caused charging problems in part of the shipment. Once the issue was identified, the battery problem was fully resolved in later production batches, and replacement units were arranged for our partners. More importantly, this experience helped us strengthen supplier screening, battery testing, and quality control…
YiHi Chipset Technology Evolution From E-Vapor Control to Multi-Industry Intelligent Control Solutions In the world of electronic vaporization, the true foundation of user experience has never been appearance or specifications alone, but the depth of control behind the system. YiHi's chipset journey began with a simple question:how to drive vaporization safely, stably, and consistently under real-world conditions. Over more than a decade of continuous development, this focus gradually shaped a control philosophy that now extends beyond e-vapor devices into multiple intelligent control applications. 2014 | The Beginning of Vapor Control In 2014, YiHi introduced the SX300 series chipset, marking its formal entry into electronic vapor control. At this stage, the priority was not complexity, but reliable power output, safety protection logic, and stable handling of different load conditions, laying the groundwork for future high-level control systems. 2015 | High-Precision Temperature Control Enters Mass Production In 2015, YiHi launched the SX350J, SX350J-V2, and SX450J chipsets. These solutions brought high-precision temperature control into mass-production environments, transforming temperature control from a niche concept into a practical and repeatable solution for everyday devices. During this period, YiHi became one of the key global technology solution providers in the electronic vapor industry. 2016 | Wireless Connectivity and System Interaction In 2016, YiHi joined the Bluetooth SIG and introduced wireless connectivity into vapor device chipsets, releasing: SX480J-BT chipset SX485J-BT chipset SX550J-BT chipset Alongside the hardware, YiHi developed its own application, SXi-Q, enabling device status display and parameter interaction. Later, due to regulatory and platform policy changes, the application was discontinued:the iOS version was removed in 2019,…
Sleek, compact, and built for everyday use, SXmini Puremax Q is designed for vapers who value clean flavor, long battery life, and effortless operation. With a 1500mAh battery and buck-boost output technology, Puremax Q delivers consistent power from the first puff to the last — without screens, settings, or distractions. CONSISTENT POWER WITH BUCK-BOOST TECHNOLOGY Puremax Q features a buck-boost power system that keeps output stable even as battery level drops. Unlike standard pod devices, power does not fade when the battery runs low.Flavor remains smooth, balanced, and reliable throughout the day. This stable output is key to maintaining consistent vapor and taste. 1500MAH BATTERY FOR EXTENDED USE Despite its sleek and compact size, Puremax Q is equipped with a high-capacity 1500mAh battery. Fewer recharges, longer sessions, and dependable all-day performance make it ideal for frequent users and travel. YIHI PURE TECHNOLOGY – ACTIVE DRY-HIT PROTECTION Powered by YiHi PURE temperature control technology, Puremax Q actively monitors vaporization conditions. When e-liquid becomes low or heating behavior changes, the device automatically adjusts output to help prevent dry hits and burnt coils. This intelligent protection works quietly in the background, keeping flavor clean and coils protected. CALIBRATED FOR PX CARTRIDGES Puremax Q is precisely tuned for PX cartridges in 0.4ohm, 0.6ohm, 0.8ohm, and 1.2ohm. The device automatically detects coil resistance and operates within an optimized power range for each cartridge. No manual adjustment is required — simply insert the pod and vape. TRAVEL POD LOCK FOR SAFETY AND CONVENIENCE Puremax Q supports PX cartridges with a travel pod lock (airplane lock). This…
What Is Evolv DNA Temperature Control? Temperature control in Evolv DNA chipsets is commonly referred to as Temperature Protection. This technology is designed to: Measure the actual coil temperature in real time(using temperature-sensitive wire materials and resistance changes) Automatically reduce power output when the coil reaches the preset temperature limit Prevent the coil temperature from exceeding the defined maximum,helping to reduce dry hits and burnt taste In simple terms, Evolv DNA temperature control works by locking a temperature ceiling, ensuring the coil does not go beyond the user-defined limit.This provides a stable and reliable form of temperature regulation. This approach is well suited for users who prefer precise, predictable temperature limits with fine adjustment control. We refer to this method as “CONSTANT Temperature Control”,because the temperature is not allowed to exceed the preset limit. What Is SXmini’s Dynamic Heating Curve? SXmini adopts a Dynamic Heating Curve design. Instead of fixing temperature or power at a single point,the system continuously fine-tunes heating output within a safe temperature range, adapting to constantly changing real-world usage conditions. During each puff, the system evaluates: Inhalation strength Heating duration E-liquid supply condition Changes in the heating element during operation Based on these factors, heating output is adjusted instantly and subtly: Initial draw:Heating response is slightly increased to activate flavor faster Stable inhalation:Output is dynamically adjusted to maintain smooth, full flavor Low e-liquid or supply changes:Heating strength is reduced to prevent overheating and dry hits The result is a continuously fluctuating but well-controlled heating curve. This approach focuses on responsiveness to real inhalation behavior,placing greater emphasis…
SXmini temperature control does not rely on fixed power output or a single heating point.Instead, it introduces a Dynamic Heating Curve design. This curve is not a straight line.It continuously adjusts within a safe temperature range, allowing the device to respond to real vaping conditions in real time. How does the Dynamic Heating Curve work? During each puff, the system evaluates multiple factors, including: Inhalation strength Heating duration E-liquid supply condition Changes in the heating element during operation Based on this information, the output is adjusted instantly and precisely: Initial draw:Heating response is slightly increased to release flavor faster Stable inhalation:Output is dynamically adjusted to keep the vape full and smooth Low e-liquid or supply changes:Heating strength is automatically reduced to prevent overheating and dry hits This process forms a continuously fluctuating but well-controlled heating curve. Why does “controlled fluctuation” improve stability? Most traditional vape devices use: Fixed wattage Or a fixed temperature point When e-liquid conditions change, these systems often lead to: Normal flavor in the first few puffs Overheating in later puffs Or sudden burnt taste SXmini’s Dynamic Heating Curve allows temperature to rise and fall slightly within a controlled range,making it better suited to real-world usage conditions. As a result: More consistent flavor delivery Fuller and more complete taste expression Stable performance from the first puff to the last Benefits in open-system pod devices In open pod systems, the Dynamic Heating Curve provides clear advantages: Faster flavor activation Better heat control during continuous vaping Reduced risk of burnt taste when e-liquid runs low Smoother and more durable…
At SXmini, we focus on one thing: making flavor clean, stable, and reliable. Puremax 2 is designed for users who care about taste, control, and long-term performance, not just power numbers. It delivers consistent flavor while actively protecting the cartridge and coil from dry hits and burning. CALIBRATED FOR EVERY PX CARTRIDGE Puremax 2 is specially tuned for PX cartridges in 0.4ohm, 0.6ohm, 0.8ohm, and 1.2ohm. When a cartridge is installed, the device automatically detects coil resistance, selects the correct power range, and keeps output inside a safe and optimal window. Each resistance works in its best power zone. This helps protect the coil and keeps flavor stable over time. PURE TECHNOLOGY – ACTIVE DRY-BURN PROTECTION Puremax 2 uses YiHi PURE temperature control technology. The chipset checks coil temperature 200 times per second. If e-liquid becomes low or heating is abnormal, the device automatically reduces output before dry hits happen. This protection works before flavor is damaged, not after. Result: ·Clean taste no burnt hits longer cartridge life CONSISTENT OUTPUT, EVEN WHEN BATTERY IS LOW Puremax 2 uses a buck-boost output system. This keeps power stable even when battery level drops. From full charge to low battery, the flavor remains smooth and consistent. The last puff feels like the first. CLEAR COLOR SCREEN, ALL INFORMATION VISIBLE Puremax 2 features a 0.96-inch TFT color screen. It clearly displays power, battery level, coil resistance, and puff count. Ignition animations give instant feedback, so users always know device status. Custom wallpapers can be uploaded via SX-Link USB…
In 2013, YiHi launched its first original vape chip, the YiHi SX130, marking the beginning of China’s era of original e-cigarette chip innovation. At a time when high-power regulated devices were still in their infancy, we were already shaping the future cloud-chasing market. The YiHi SX200 soon followed, delivering the perfect balance of power and stability, becoming the go-to core chip for many brands. The Sigelei Legend series gained massive orders thanks to the SX200. Next came the YiHi SX220, whose outstanding performance powered legendary iPV devices like the iPV2 and iPV2S, sparking a global trend in compact regulated box mods. The YiHi SX300 entered the main stage of the high-wattage cloud market, adopted by multiple domestic and international brands. Many leading manufacturers — including Dovpo, KSD, SXK, Hotcig, Yosen, and many more — chose the SX300 for their devices, earning strong consumer praise worldwide. Models like the Yosen SX Mod 50W became bestsellers, driven by the chip’s exceptional performance. With the launch of the YiHi SX330, device performance and user experience reached new heights, securing its place in flagship models from Sigelei and Pioneer4You. For years, the SX series chips powered nearly half of China’s high-performance vape market, winning international respect for Chinese manufacturing. Today, SX is more than just a chip — it is a symbol of China’s original vape technology. We believe that innovation drives the future, and technology is the strongest foundation for any brand.
