Sanyo Eneloop Battery Adapter Kit Includes 4XC Adapters and 4XD Adapters

Comment:
It works and does what it says it does. Use it with aa nimh batteries for devices that require c or d size batteres. I regret not buying the eneloop family pack though as it comes with c d adapters as well as carrying case.

Comment:
I own dozens of the AA and AAA Eneloop batteries as well as several of the chargers. These are great for the odd item that takes C or D, but the battery life is less than moderate for C and dismal for D (AA's just don't have the same capacity)

Comment:
If you have a little kid, you know that for whatever reason, kids toys take a lot of C and D batteries. And C and D rechargeable batteries are difficult to find.Even if you do find them, C & D rechargeables are typically rated at 2500-ish mAH, same as the AA rechargeables so you might as well sleeve them. An alkaline D is usually exceeding 12000mAH, so you can expect to have to pop out the batteries more frequently to charge them, but it beats tossing them and buying D batteries all the time.These fit fine in most things. The C sleeves aren't designed as nicely as the D's, but they get the job done. Just pop a AA rechargeable battery in them and off you go.