5V Boost Step Up Power Module Lithium LiPo Battery Charging for Protection Board for DIY Charger Description: brand new, high quality 134n3p is a single-chip solution designed for mobile power.It integrates a charge management module, a discharge management module, a power detection and LED indication module, and a for protection module. 134N3P has built-in charging and discharging power MOS. The charging current can be set. The maximum charging current and maximum discharging current are 1A. 134N3P integrates constant temperature charging working mode, over temperature for protection, over charge and over discharge for protection, output over voltage for protection, output weight Almost all safety for protection functions such as load for protection and output short-circuit for protection to ensure the safety of the chip and lithium-ion battery. At the same for time, the 134N3P application circuit is simple, requiring only a few components to achieve charge management and discharge management. Features: Charging red light flashes. Red light is on for full charge, blue light for discharge flashes. DIY charger with Android-mobile phone charging port and USB output port Built-in charging and discharging power MOS Integrated charge management and discharge management Intelligent temperature control and over-temperature for protection Integrated output over-voltage for protection, short circuit for protection, heavy load for protection Integrated overcharge and overdischarge for protection Support trickle mode and zero voltage charging Specifications: Input voltage: 3.7V ~ 5.5V Charging current: 1A max Output current: max. 1A Output voltage: 5V BAT discharge termination voltage: 2.9V Preset 4.2V charging voltage with accuracy of 1% Discharge efficiency: 85% (input 3.7V, output 5V / 1A) 8uA standby current Material: Electronic component Size: approx. 20x18mm / 0.79x0.71in Color: As Shown Quantity: 1 Pc Note: No retail package. Transition: 1cm = 10mm = 0.39inch. Please allow 0-1cm error due to manual measurement. Pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1 x 5V Boost Step Up Power Module (other accessories demo in the picture is not included.)