A20 board problem if a backup battery is installed

[timharvey]

Hello, I use a FreedomBox server using an A20-OlinuXino-LIME2 board. I want to install a backup battery to prevent power outages but cannot boot, the problem occurs when the Led light shows that the power board has power but there is no ethernet activity.

Does anyone know the cause and can anyone who has used a backup battery successfully guide me? Thank.

[LubOlimex]

Do you have only the battery applied as power source to the board when you try to boot? Consider that you might need to hold the PWR button to start the board when only battery is present.

Consider that the battery might be very big and discharged and your main power supply might be unsuitable for that draw of board + discharged battery. Try with better main power supply (with more current available, thus bigger wattage). Maybe try with smaller battery.

If it is not that, please give us more details, like what sort of battery do you use and where is it applied?

Usually people use Li-Po batteries like these:

https://www.olimex.com/Products/Power/Lipo-battery/