I'd say...half-right. You are avoiding the bottom 20% of the charge cycle, which is good as it doesn't stress the battery to pull every last drop of power from it...but you are running into the top 20% (*from 80% to 100%), so in that end of the spectrum you are putting the battery through another stress which is to eek out every last space of unused storage and shove electrons into them. So you would likely gain a benefit of a longer battery lifespan due to avoiding the bottom, but no where near the 500% potential lifespan increase available if you avoid both ends of the charging cycle. Mountainbikermark is spot on. If you stay in the middle of the ranges specified, or in other words, never let it go below 20% and never let it go above 80%, you will reap rewards of a longer lasting battery. Of course, this also means that between charges you only have up to a maximum of about 60% of the battery's capacity available to you at any given time. So as with just about any decision we make as Humans, there's a trade-off for one versus the other... As for the "Bump charge" method, that is as he's indicated VERY BAD for these batteries and will dramatically shorten their lifespan. Look at it this way. If you blow up a balloon to 75% of its capacity every time, it will withstand hundreds of inflations. But if you inflate to 100% each time, you'd be lucky if it lasted more than a couple dozen - if that. I know that's not a good analogy, but it does prove the point. If you stress something to its limits consistently, it will likely fail far sooner than the average lifespan of one which is not stressed. Since the battery is not a mechanical device, but is instead an electro-chemical one, the physical aspects of stressing the battery happen at mollecular levels - far too small for the eye to see, however they are actually mechanical in nature since they break down the internal electrode making it less able to move and store electrons efficiently.