2-Way 18650 Battery Holder

This user-friendly 18650 battery holder has a dual-slot design. It offers both micro and type-C charging inputs. You can install two 18650 batteries in it. There are five 5V/2A output ports, five 3.3V/1A output ports, and one 5V USB output. It comes with overcharge and over-discharge protections, which can greatly extend the lifespan of your 18650 batteries. An onboard DIP switch lets you switch between HOLD and NORMAL modes. In Normal mode, it automatically shuts down when the current is too low. In HOLD mode, it keeps outputting until the over-discharge protection is triggered. This battery holder can serve as a power source for microdevices, outdoor equipment, or DIY smart vehicles. The maximum current is 3A (though 3A is not recommended), and the output current depends on the quality of the 18650 batteries. When installing the batteries, pay attention to the polarity as the + and - are clearly marked on the board. Installing them in the wrong direction will burn the module. It also features an LED indicator where blinking means charging and stopping blinking means fully charged.

Using this battery holder is easy. First, make sure to install the 18650 batteries correctly, following the marked polarity on the board to avoid damaging the module. You can charge the batteries using either the micro or type-C input. When it comes to using the output ports, you have different options for different devices. There are 5V/2A, 3.3V/1A output ports, and a 5V USB output. You can switch between HOLD and NORMAL modes using the onboard DIP switch. In Normal mode, the holder will automatically shut down when the current is too low to save power. In HOLD mode, it will keep outputting until the over-discharge protection kicks in. Be aware that the maximum current is 3A, but it's not recommended to use it at this level. The output current depends on the quality of your batteries. To maintain the battery holder, keep it in a dry and clean place. Also, don't expose it to extreme temperatures. When the LED indicator stops blinking, it means the batteries are fully charged.