As the title suggests, I've found that once you've unlocked Nano Recharge you don't need to have it equipped for it to count when you restore to full health after taking damage towards upgrading the module. At first this seemed like it was obviously a bug, but the description for how to upgrade the module only mentions restoring to full health after taking damage with no mention of needing Nano Recharge equipped (while all the other module upgrade requirement descriptions mention having those modules equipped at the time).
Assuming that this isn't only happening to me (that would be
terrible), is it a bug or perhaps has a dev realised the requirement was very annoying and sneakily made it easier to get without telling their superiors.