That would renew the anodes of a LOT of D-sized cells. Even if you added in another $30USD for 500g of manganese oxide, you might still come out ahead of the game. Either way, it’s a good hack ...
Two main types of rechargeable batteries (lithium-manganese oxide batteries and lithium-nickel-manganese-cobalt oxide batteries) rely on manganese to function. Thanks to a sustained, growing focus ...