Yonii 18650 Smart Battery Charger with LED Percentage Display,Adjustable Current 0.5A/1A/2A,Compatible with 3.6/3.7V Li-ion/IMR/INR & 1.2V Ni-MH/Ni-Cd Batteries,Supports 21700 18500 18350 10440 26650

Product Description: The Yonii Q4 Smart 4-Slot Battery Charger is more than just a charging device; it's a professional and safe energy management center for all your rechargeable batteries. Utilizing an advanced microcomputer control system, it integrates precision, efficiency, and safety, designed to provide the most reliable power source for all your devices—from flashlights and remote controls to professional equipment. Say goodbye to blind charging. The Q4 features a clear and intuitive LED percentage display screen, showing the real-time, precise charge status (25%, 50%, 75%, 100%) of each individual battery, making the charging progress clear at a glance. You no longer need to guess when the batteries are full, allowing for more efficient usage planning. We understand that different devices and batteries have varying needs for charging speed. Therefore, the Q4 offers you flexible options: switch between 0.5A, 1A, or 2A charging current with a single button. Use the 2A mode for fast charging of high-capacity Li-ion batteries like 21700s, or switch to the gentle 0.5A trickle mode for maintenance charging of Ni-MH batteries or rare 10440 small cells, effectively extending overall battery life. The Q4 boasts extensive compatibility, covering almost all mainstream rechargeable batteries on the market. It perfectly supports 3.6V/3.7V Li-ion/IMR/INR batteries (such as 10440, 14500, 16340, 18350, 18500, 18650, 20700, 21700, 26650, etc.) and 1.2V Ni-MH/Ni-Cd batteries (such as AA, AAA, AAAA, C, etc.). Its four independent charging slots can simultaneously handle batteries of different brands, models, sizes, and even chemical systems, making it the ultimate solution for organizing and maintaining all your batteries. Safety is our top priority. The Q4 features built-in multiple smart protection circuits, including reverse polarity protection, short-circuit protection, overcharge protection, and overcurrent protection, preventing potential risks at the source. Its Type-C input port offers strong compatibility and automatically adapts to power supply, ensuring stable and efficient operation. Choosing the Yonii Q4 means investing in a trustworthy "battery butler" for your electronic devices. It doesn't just charge; it intelligently cares for your batteries, ensuring each one performs at its best and is always ready for use.

• 【Wide Compatibility with an Extensive List of Batteries】: This charger is universally compatible with a vast range of batteries. It supports 3.6V/3.7V Li-ion/IMR/INR/ICR batteries (e.g., 10440, 14500, 14650, RCR16340, 16650, 17500, 17650, 17670, 18350, 18490, 18500, 18650, 20700, 21700, 22700, 26650, 26700) and 1.2V Ni-MH/Ni-Cd batteries (e.g., AA, AAA, AAAA, C, SC). The four independent slots allow simultaneous charging of mixed battery types and sizes.
• 【Smart 4-Slot Independent Management】:​ Equipped with four independent smart charging slots, it can simultaneously charge batteries of different brands, models, sizes, and even chemical systems (Li-ion/Ni-MH) without interference, making battery management more efficient.
• 【LED Precise Percentage Display】:​ The clear LED screen displays the precise charging percentage (25%/50%/75%/100%) for each battery in real-time, making the charging progress clear at a glance and eliminating guesswork.
• 【Three Adjustable Current Levels】:​ Features one-touch switching between 0.5A (Maintenance), 1A (Standard), and 2A (Fast) charging currents, meeting different needs from gentle maintenance to quick top-ups, effectively extending battery lifespan.
• 【Multiple Safety Protection System】:​ Built with an advanced microcomputer control chip, it provides multiple circuit protections including reverse polarity, short-circuit, overcharge, and overcurrent protection. Paired with a Type-C input port, it ensures a safe and reliable charging process.