Lithiun Ion Battery Caution

With the problems with these batteries I have no idea how they got into vehicles. Seems like a real bad road. I build electronics for power wheelchairs, and up till lately we offered both 24 and 48V versions. They are Lith IRON and have an electronics package inside the battery to "manage" it. It regulates discharge rate and charging rate and a few other things. The package also breaks the entire battery into separate smaller batteries, "banks" for protection

You cannot take a LiFe battery (wheel chair) onto an aircraft