Quote:
Originally Posted by scrubjaysnest
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What I find most important in that data is that the amount of usable stored energy declines significantly as these types of batteries are discharged quickly. Even at 2-hour discharge rate the usable energy is much less than at 20-hour rate.
When there isn't enough battery capacity available for the load, batteries will run down very fast and will often end up almost completely discharged. And it doesn't take too many cycles getting close to zero state of charge to kill an otherwise good battery.
Long-term lithium batteries will solve this problem because they are not as sensitive to discharge rate.