When a lead acid battery becomes discharged both electrodes undergo chemical changes to form lead sulphate and eventually the battery dies.
A rechargable deep cycle battery can be fully discharged without damaging the battery. Any auto battery cannot be discharged without damaging the battery. Any dry cell rechargable battery can be fully discharged without damaging the battery.
Ruin the battery.
Outgas produced while Charging or Discharging an Automotive BatteryThe gas produced by a lead-acid automotive battery is Hydrogen [H2]. Under unusual circumstances, sometimes there also may be some Hydrogensulphide [H2S] gas.
Yes, a charged battery weighs slightly more than a discharged battery due to the additional mass of the stored electrical energy.
There is no usual. Depends on the quality of the battery and if it was ever fully discharged. 3-4 years is normal. Each time the battery is fully discharged, the life of the battery is shortened.
Either a discharged battery or a corroded battery terminal. The battery could be discharged because the alternator isn't working.
No battery, discharged battery, poor electrical connection, damage.
The battery is as flat as a pig's nose !
Ozone
It is called a deep cycle battery
well then good luck with that
Yep, will not start.