How long does a 12v lithium battery last
Lithium-ion batteries can generally be charged and discharged 300-500 times. It is better to partially discharge the lithium-ion battery rather than fully discharge it, and try to prevent frequent full discharges.
The theoretical life tested by a lithium-ion battery manufacturer on a production line under test conditions may not necessarily be achieved by your battery. For your battery, it is: actual charging times × discharge depth = actual battery life. Once the concept of cycle life is clarified, we can distinguish it from what sellers/consumers call “charge times” and “charge times”.