Battery adapters are great for emulating different sized batteries with AA and AAA Rechargeable Batteries. Typically, AAA or AA Batteries are about 30% as powerful as throw away C or D sized Batteries. The advantage when they're used in conjunction with a GMAG Saltwater Powered Battery Charger is that they can significantly outlast the larger batteries by simply inserting a freshly charged AAA or AA Battery in the adapter. Using AAA and AA Batteries with the GMAG Charger and adapters may mean that you never have to buy C or D sized Batteries again! Imagine powering all of your C and D sized devices with AAA and AA batteries and achieving the same performance and longevity as the bigger and heavier batteries.
These adapters weigh almost nothing and won't weigh you down in your Go Bag like big bulky batteries do.
Adapters are must have items.