A New Powersonic Battery
I could not figure out why my charger was not working since I had only used it a few times. I would leave it charging for several hours and it still would not work. I finally figured out that the charger needed a new Powersonic battery. I was able to purchase the battery from an online store that had great prices on all types of batteries. As soon as I put the new battery into the charger it started working right away.