Please Recommend a Battery pack for forum project

please recommend a 6v battery pack to go with the controller and four servos (hitec-hs422) as described in the forum project …
robotshop.com/en/servocity-4 … yback.html
Thanks

The 422 works well at 6V, so a 6V pack with the right connector would be plug and play. Some examples:
robotshop.com/en/nimh-2000ma … =RB-Ten-05
robotshop.com/en/pololu-nimh … RB-Pol-159
robotshop.com/en/pololu-nimh … RB-Pol-160
The capacity (i.e. storage capacity) dictates how long the servos will last