05-05-2020, 01:12 AM
Not to mention rechargeable C and D cells are just AAs in C and D clothing.
You can buy full size rechargeable C and D cells, they have much higher capacity. They also cost a bit. For example - https://www.amazon.com/Tenergy-10000mAh-...07YN8JL39/.
They are 10000 mAh where an AA in a D size casing will be about a quarter of that.