Solar Charging Circuit Board 3.7V to 5V 2.1A Mobile Display Power Boost Module Charger Step UP Module

Solar Charging Circuit Board 3.7V to 5V 2.1A Mobile Display Power Boost Module Charger Step UP Module Parameter: 1>.Input charging voltage: DC 5V 1.5A 2>.Input battery voltage:DC 3.6V-4.2V Polymer Rechargeable Lithium Battery 3>.Solar panel charging voltage:DC 4.2V-5.8V 4>.Output channel:2CH 5>.Output voltage:5V2.1A/5V1A 6>.Operating Temperature:-20℃~85℃ 7>.Operating Humidity:5%~95%RH 8>.Module Size:70*24.5*8.1mmFeature: 1>.Support solar panel charging 2>.Support discharge while charging 3>.Support dual USB outputButton Function: 1>.Press to wake up moduleNotes: 1>.2.1A is the max output current.It is not a constant current power module.Its output current change by load!It can not keep output 2.1A fixed. 2>.Old and new batteries can not be mixed. 3>.The solar panel charging current is just about 50mA.So the solar charging speed is very slow which can only play a supporting role. 4>.The battery cannot be reversed, otherwise the module will be damaged. 5>.Please check the battery voltage first. If the battery voltage is lower than 3V, the module will not work properly. 6>.Please input from Micro USB socket to activation module at first before connect battery. 7>.The input solar panel charging current can not more than 1A.

• Solar Charging Circuit Board 3.7V to 5V 2.1A Mobile Display Power Boost Module Charger Step UP Module