[amluto]

> It took nearly a week to fully charge/discharge. At the time they put a positive spin on it by emphasizing "long duration." That's not really an advantage, though. You can just discharge a high-rate-capable battery slower for long duration applications.

If the price is right, long duration is just fine. One week of storage to get through a spell of cloudy weather or poor wind conditions is quite useful. It doesn’t obviate the need for daily storage.