There are a few options you can try if you need to charge your AGM A7 but don't have a charger available:
Use a power bank: A power bank is a portable battery that you can use to charge your AGM A7. You will need to have a power bank that is charged and has a USB port to connect your phone's charging cable.
Use a USB port on a computer: If you have access to a computer with a USB port, you can try connecting your AGM A7 to the computer using the phone's charging cable. The computer should be able to provide enough power to charge the phone, although it may take longer than using a wall charger.
Use a car charger: If you have a car charger, you can use it to charge your AGM A7 while you are driving. Some car chargers have multiple USB ports, so you may be able to charge multiple devices at the same time.
Use a wireless charging pad: If your AGM A7 supports wireless charging, you can try using a wireless charging pad to charge it. You will need to have a wireless charging pad that is plugged into a power source, and then you can simply place your phone on the pad to begin charging.
Use a solar charger: If you are in a location with plenty of sunlight, you may be able to use a solar charger to charge your AGM A7. Solar chargers have built-in solar panels that can generate power from sunlight, and then use that power to charge your phone.
Note: It is important to use a charger that is compatible with your AGM A7 and to follow the manufacturer's instructions for charging your phone. Using an incompatible charger or charging your phone incorrectly can damage the phone or cause it to malfunction.