If the LEDs on the HA-2 are not lit when connected then your phone is not charging it. Android may think otherwise but the HA-2 is not pulling the charge.
See the
HA-2 manual. Page 7: "Battery Level / Charging Indicators: Four green lights indicate the HA-2’s internal battery level. When charging, these lights also indicate the charging status and currently charged capacity." "Battery Check / Power Bank Button: A single press of this button lights up the Battery Level Indicators to show the HA-2’s internal battery level."
On my HA-2SE the LEDs are lit when charging and off when not charging. If they are off when connected to your phone the HA-2 is definitely NOT charging, If I use the wrong cable the LEDs light up immediately when I connect it to the phone.
EDIT: When charging the LEDs blink. Per the manual: "Plugging the charger into a power outlet will begin charging the HA-2’s battery, and the Charging Indicators on the side of the unit will start to blink." Well, only one of the LEDs blinks and when fully charged all four LEDs stay on.