These are single generic brand rechargeable 9V Size batteries.
These are generic brand rechargeable D Size batteries, 1.2V comes in package of 2.
These are generic brand AA Size Nickel - Metal Hydride rechargeable batteries. 1.2V at 2200mAh maximum output. Comes in package of 2.
These are generic brand rechargeable AAA Size batteries, 1.2V comes in package of 2.