Battery cells of varying size, capacity, and chemistry. Many individual cells are available with or without solder tabs attached.
Energizer AAAA: 1.5 volt Alkaline AAAA battery E96. Primary (non-rechargeable) alkaline cell. Dimensions: 42.5mm long, 8.3mm diameter.$ 1.75
Energizer 9-volt Alkaline battery. Long life, factory fresh, high-quality, OEM product.$ 4.95