Wow! That means you're voting a lot! If you're only voting manually, that's seriously impressive.

The way it works is that f we don't vote at all, we have 100% voting power. Then, the more we vote, the lower the voting power goes. As I understand it, our voting power replenishes at a rate of about 20% per day, so it would take you 4 days without voting to get up to 100%.

The best articles I've seen to get a handle on voting power are The Ultimate Guide to Voting Power and The Complete, Definitive, and yes, Ultimate guide to Voting Power. Updated! , both by @biophil. The second is an update of the first. According to those, after 40 votes, you have maximized your influence for the day.