Mayatech 3 in 1 Lipo Battery Discharge Tester USB Discharge Indicator 2S-6S 5V Step-Down Module

Specification Input voltage Input voltage 7 28V including car 12V with reverse connection protection no need to worry about the wrong connection between positive and negative Output voltage USB output 5V2A adaptive Version T plug version XT60 plug version 2 choose 1 Product application lithium battery can be used as a power bank equipped with USB data cable by yourself Packing size 85 15 10mmTotal weight 20gProduct Features 1 Aviation model lithium battery can be used as a power bank 2 Air model enthusiasts will have a lot of lithium batteries you can use idle lithium batteries or aircraft after the motor to charge the phone 3 Can be used as a battery display 4 Check the battery voltage at any time to avoid overdischarge of lithium battery only check the total voltage 5 It can be used as a 5V step down module 6 Cut the output and heat shrinkable film 7 Self welding can be used as 5V step down module 8 Easy to carry in the outfield 9 Compact appearance The tool box can be stored be easy to carry about Usage Method 1 Use of power bankInsert the battery at the input end 7 28V the USB indicator light is on and the USB port at the output end is inserted into the charging cable of the mobile phone which can be charged 2 Use of electric displayInsert the battery at the input end 7 28V the USB indicator light is on and the total voltage of the battery is displayed on the voltage display screen 3 Use 5V step down moduleCut the heat shrinkable film and s