Sorry, but you are fooling yourself if you believe that biochem companies are interested in saving anyone money for a new tech. I have a feeling they may introduce a version of this that either will require an (eventual, though long lasting replacement) or will have a massive up front cost for the use of a new tech that won't need replacing. I could even see a requirement for a pill or a shot needing to be administered periodically introducing a battery-recharging enzyme or something so that they keep users on the financial hook. At least the last speculation would help to avoid surgery, but I will be holding my breath until the end of time if I wait around for a cure to disease instead of just a treatment, which is what I see the implementations above as being.
Of course, that's if it ever shows up at all. Still waiting on tires that never need replacing.