Expand your project to Narrow Band connectivity. It is the ideal solution for areas where there is no internet connection or in which there is no access to power supply. The existing Li-PO charging circuit of the Arduino enables battery operation and loading the battery when using with an external 5V voltage source. The voltage source is switched automatically. The board has all components that are necessary for the operation of the microcontroller. This means that it only has to be connected to a computer for the operation using a microUSB cable or operated via a Lipo battery. Ublox sara-r410m-02b, documentation (https://www.u-blox.com/sites/default/files/sara-r4-n4-productsummary_%28ubx-16019228%29.pdf) (https://www.u-blox.com/sites/default/files/sara-r4-n4_datasheet_%28ubx-16024152%29.p.