Laser Hair Removal In Texas: My laser is weak but I don't think it's the batteries! What do I do?!?!?

I got a laser today as a prize (it's not just a laser it's Laser Hair Removal In Texas also a pen) and earlier, when I tried it out, it worked awesome, and I could see the dot on somebody's hair across a really big room. Now, 5-6 hours later, it's so weak!! I had to remove an insert between the battery and the metal contact, so it's not as if it's been draining for ages. WTF? Is it because the batteries are Chinese because they have some Laser Hair Removal In Texas Chinese characters on them? I mean because manufacturing standards in China are lower right? So is it the laser or the batteries cuz then can't I just get new batteries?

Answer:Try new batteries. They are cheap enough. Heck, it is even cheap enough to buy a whole new laser.