Key features: • Large LCD display--Integrated LCD panel clearly displays charging parameters and processes (battery type, voltage, time, charging percentage, charging capacity, auto-alert indication for worse battery cell); Reverse protection, precision end-of-charge voltage detection. • High compatibility--S4 compatible with not just 20700, 26650, 18650 Li-ion batteries, but also compatible with IMR. ICR Ni-MH/Ni-cd batteries with 32 - 70 mm length and up to 32 mm in diameter. • Automatic, smart temperature regulation and protection--Detects and regulates the internal temperature of your electronic device in real-time, thus preventing the possibility of overheating • Highest quality materials used for safety- The S4 case is made from high quality ABS+PC fireproof materials, while the loading spring is made from military grade stainless steel. The spring-loaded battery contact plates lessen interaction resistance. which makes it more precise with its charging voltage while charging, and it produces less heat, thus allowing a smoother sliding action when inserting and removing the batteries. • Multi-protection capabilities-Protects from overcharge, over-current, over-voltage, overheating, and short circuits • Battery detection and smart-charging--It supports up to 4 batteries of different sizes and chemistries. S4 can detect different battery types and smartly allocate current and voltage accordingly. In other words, it can charge different batteries at the same time. •For use at home or on the go--Supports 100 - 240 V AC, or 12 V DC, for use at home or in your car Operation guide: • Screen display and operation: When connecting to power supply without batteries, the screen will be bright for 2 seconds then display "null", which denotes no batteries being loaded. • Button operation: A short click displays LCD charging status. A 3-second long click keeps the LCD always bright.
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