The topic about how long does a life of a lead-acid battery will last and what rating should you use depending on what designates to them. It says that if a battery with a rate of 100AH, then it was more or less giving an indication that either 100 hours under a 1 amp load or 1 hour under a 100 amp load will take its life to the fullest.
The higher the Ah rating, the more energy the battery can store, and the longer it can power your device. For example, if you have a 100Ah battery, it can provide 100 amps of current for one hour, or 50 amps for two hours, or 25 amps for four hours, and so on. The actual time a battery will last depends on the amount of current being drawn from it.
Lead acid batteries should never stay discharged for a long time, ideally not longer than a day. It's best to immediately charge a lead acid battery after a (partial) discharge to keep them from quickly deteriorating.
The most often listed rate is 20 hours. So, if you were to see a battery rated at 100AH, it would have been tested at a 20 hour rate, unless otherwise noted. This means that the manufacturer slapped the 100AH rating on the battery after testing that battery for 20 hours with an actual amperage drain of 5 amps.
It says that if a battery with a rate of 100AH, then it was more or less giving an indication that either 100 hours under a 1 amp load or 1 hour under a 100 amp load will take its life to the fullest. But just what was taught to me back in Calculus, that what I know about logic numbers were about to change.
48v lead acid battery will last anywhere between 4 hours to 22 hours while running a 500-watt load. 48v lithium battery will last anywhere between 8 hours to 50 hours while running a 500-watt load. how long 70ah battery last? Table 4: how long will 70ah battery last?