An example of conduct that hinders information sharing but would not be considered information blocking is a lack of coordination between persons or entities that participate in or facilitate the exchange of electronic health information.
Non-rechargeable batteries, or primary cells, and rechargeable batteries, or secondary cells, produce current exactly the same way: through an electrochemical reaction involving an anode, cathode and electrolyte. In a rechargeable battery, however, the reaction is reversible.
Generally, rechargable batteries only last for around 1000 charges. The only way of telling is if you notice a rapid decrease in the life of the batteries, then it's time to get a new set.