Poor quality - Energizer LED Light Fusion Folding Area Light - 330 Lumens

i bought one unit to do some work under a cabinet, the unit worked well for about 1 hour and then it went dimmed and went off. I turned the unit on and it only blinked on/off. I could not get it to stay on. I disconnected the batteries once again after the initial 10 sec instruction info., and it went back on no problem until half an hour later then the same strobe on/off occurred. I returned this unit to the store for another today, once again mid way through 1 hour the same problems occurred. Tomorrow I'm returning the unit again.