Review title is Poor instruction manual [SEP] Poor instruction manual, it shows batteries inserted wrong direction. Also, the handle is where the batteries go, the housing is so small, I had to hunt for batteries that would go in without getting stuck.  No rechargeable brand I had fit, I tried high drain alkalines, they would stick, cheap carbon zinc bats fit, but give poor performance.  My unit isn't broke, or put together wrong, its just designed poorly.  Batteries in country of origin ( china) must be much narrower in diameter than US market batteries. :(  I would not recommend this product untill they redesign the battery compartment to give it about 1.5-2mm more inside diameter.  You really want nimh rechargeables in this device