I bought the samsung ICR18650-30B 3000mAh, and the Miller ML-102 v5, mod the miller to fit the protected batteries, pretty sure i didnt damage the charger.
So the miller charger flashes green and red when no battery detected. And as soon as a i put in the samsung battery, the led light indicator goes off. No red light charging status or anything…
I only have these 2 batteries and this 1 charger, cant switch it around with other chargers/batteries to test.
Has the battery gone below the minimum charge ? (2.5v). If it has ?, the pcb has tripped to stop damage, try switching the charger on and off with the batt in it and you might get lucky and put enough charge in the cell that the charger recognises it and starts to charge, if it does start charging keep an eye on it as it might get hot.