Daisy chaining IceCap battery backup question

[pecan2phat]

If I have 2 IceCap battery backup units and daisy chain it, why do I need to power supply each unit?
Can't just 1 unit be on a power transformer to supply both units since they are connected?

 

[EeyoreIsMySpiritAnimal]

If I have 2 IceCap battery backup units and daisy chain it, why do I need to power supply each unit?
Can't just 1 unit be on a power transformer to supply both units since they are connected?

If you want both units to charge, you need both power supplies.