The duration that the EGO Power+ AB2101 High Lift Blade stays sharp can really depend on a few factors like the type of grass you're cutting, how often you use it, and how well you maintain it. Regular cleaning and inspection can help keep it sharp longer.

From what we've found, with proper care, it holds its edge pretty well over a mowing season, though you might need to sharpen it occasionally.

The blade is specifically designed to improve bagging efficiency for the EGO 21-inch lawn mower by creating better suction and collecting more clippings.

It’s compatible with multiple EGO mower models like the LM2101, LM2100, LM2102SP, LM2100SP, and LM2142SP, as claimed by the manufacturer.

There are a couple of things to watch out for, though. Some folks have noticed that the enhanced suction can lead to more noise and quicker battery drain, likely because it pulls more power.

Also, the manufacturer advises against using this blade with the mulching plug to avoid any hiccups in performance.

When installing, make sure to use genuine EGO parts to get the best fit and function. Skipping on non-OEM or generic blades might not give you the same results in terms of snug fit or efficiency.

Overall, the high lift blade seems to be a hit among those who prioritize effective grass collection, even if it comes with minor drawbacks like noise or battery usage.