4 DB DC 5V 2.1A mobil Power Diy Board 4.2V töltés/kisütés (Boost)/akkumulátorvédelem/jelző modul 3.7V lítium 18650
4PCS DC 5V 2.1A Mobile Power Diy Board 4.2V Charge/Discharge(Boost)/Battery Protection/Indicator Module 3.7V Lithium 18650
Features
When using a lithium battery, its charging and discharging need a circuit protection to protect the lithium battery from being damaged or to obtain a safe power source from the lithium battery. The mobile power module is used to protect the charging and discharging of lithium batteries. Compared with the general lithium battery protection board, the module has 4 LED indicators to indicate the current power of the lithium battery. Please see below for detailed parameters and usage.
Introduction (2) Module parameters:
Input voltage: DC 4.65V-5.5V
Overcharge protection voltage: 4.2V±1%
Over-discharge protection voltage: 3±1% V
Charging current: 0-2.1A
Discharge current: 0-2.4A
Output voltage at the output: 5V
Input protection: over current, over voltage, short circuit protection
Output protection: overvoltage, overcharge, overdischarge, overcurrent protection
Overcurrent protection value: 3.5A
Overheat protection: over temperature protection
Operating temperature range: -20° to 85°
Boost efficiency: up to 92%

Introduction (3) Instructions for use:
(1) Functional characteristics: switch on and off by pressing keys; support charging and discharging at the same time; 4 LEDs, 4-level power indicator; intelligent load identification, automatic standby, standby current less than 100uA; adaptive charging current adjustment, adaptive adapter.
(2) Button function: The button duration is longer than 50ms but less than 2s, which is a short press action. A short press will turn on the battery indicator light and boost output. There will be no response to key presses less than 50ms.
l Two consecutive short key presses within 1s will turn off the boost output, power display and lighting LED.
1005003308870748 - pngto