I purchased my Ego15 inch Carbon shaft Powerload Trimmer yesterday at Home depot. The assembly was simple, and I let the battery charge overnight. This morning, I cut heavy grass/weeds for a little over 30 minutes before the battery gave out. The grass/weeds were a little damp from dew. Let me say this, very, very impressive, the balance, lightness, quietness, power, etc. At age 77, my battery was ready for a recharge too.