Using AA batteries in devices that normally use D batteries
I could not find any D size NiMH batteries at a reasonable price for my flashlights.  I found these adapters and bought them instead.  So far they have performed perfectly in the flashlights.  I read some reviews stating that using AA batteries instead of D batteries would be disappointing but so far they have performed great.  I use Rayovac AA NiMH batteries and they have exceeded my expectations for power.  Rayovac AA NiMH batteries are kind of hard to find by I really like them in my cameras and flashlights.
Rating: 5 stars