Most 9-volt batteries have an estimated shelf life of up to ten years. At the minimum, they will have a shelf life of four years. Most packages of 9-volt batteries will claim a shelf life of somewhere between seven and ten years.
I would not buy any battery over 6 months old.
if you mean shelf life they last for years if stored properly
A dry charge twelve-volt battery typically has a shelf life of 6 to 12 months before adding electrolyte. During this period, the battery can maintain its charge and performance, provided it is stored properly in a cool, dry place. However, it is recommended to check the manufacturer's guidelines, as specific conditions and battery types can influence shelf life. After this period, the battery may begin to degrade, affecting its overall performance.
The battery life (assuming it is a primary cell) is determined by the Ampere-hour drawn from it. You cannot connect a 3.5V bulb directly to a 9V battery. The bulb will fuse.
No
if it is any think over 1 volt it is not a cell battery it is just a 6 volt battery if you had a 1 volt then it would be a cell battery
No, it will overcharge the 6 volt battery.
The battery is a 12 volt.
No
You get a 9 volt battery and u shock it
Charge the battery fully. That is all you can do.
No, you cannot charge an 8 volt battery with a 6 volt charger. The voltage of the charger must match the voltage of the battery.