Features:
1) The ability to charge 2 sizes of rechargeable batteries-AA, AAA
2) Can charge either 2 or 4 AA or AAA size batteries or 1 or 2. 9V in either
Nickel Cadmium or Nickel Hydride technology
3) Automatic cut-off after 5 hours
4) Extended charge times significantly prolong battery life
5) This pack comes complete with two environment friendly (0% Cadmium) Nickel
Hydride AA size batteries, which offer over 80% more capacity than standard
600mAh Nickel Cadmium batteries

The advantages of JUMPSUN Nickel Hydride (Hi-MH) rechargeable batteries:
1) Can be recharged up to 1,000 times with no "memory effect"
2) Best performance especially for high drain applications