for 4 UPS Power Supply Uninterrupted UPS HAT 18 650 Backup Battery Power Supply Management Expansion Board

MULTIPLE PROTECTION: Support output overcurrent, overvoltage, short circuit protection; input overvoltage, overcharge, overdischarge, overcurrent discharge protection and machine overheat protection. Safe and reliable
INTELLIGENT DESIGN: UPS for 4B / 3B+ / 3B. Built-in power path management, support side-loading, load high current line compensation function. There are two USB A port power output, and also adds type C output. It provides uninterruptible power for the to make your still work while moving, and its design is so smart that you can troubled of a mass wire.You can check in the Product guides and documents at the bottom of the page.
USE AND NOTE: This product belongs to the power supply device. Please keep it out of the reach of children. Please strictly refer to the instructions for the UPS product, install the battery first, then connect the UPS to the . Please do not reverse the battery. If the battery polarity is reversed, it directly burn the power management chip of the device. Do not add any Components by yourself
FAST CHARGING SUPPORT: Support FCP, AFC, SFCP fast charge protocol maximum, support 18W protocol, 20W input
FUNCTION UPGRADES: Support 4.2V 4.35V 4.4V 4.5V lithium battery, power supply side current, voltage, power monitoring, Note: Different types of batteries cannot be mixed