Depends on the phone
Depends on the condition of the battery. Most will hold a charge for at least 6 months if they are not connected to anything.
A battery will last 3-9 hours based upon the number of cells it has. The more cells the longer the battery charge will hold. The battery charge will also depreciate over time. It will last for a shorter and decreasing amount of time as it is used more often.
According to Amazon.. "..read for up to one month on a single charge..."
Depends upon the capacitance. The time of holding charge can analyse by transient analysis.
Depends on what it is being used in.
I assume you mean if it is stored. It depend on the battery and what condition it is in. A good auto battery will hold it's charge for at least 6 months.
Charge It Up and hold the on/off button as long as you can.
8-16 hours.
The most common reason is one of the cells in the battery is bad and the only thing to do is get a new battery
This particular battery is advertised as being very long-lived. If you are having problems getting it to hold a charge, it may be faulty and need to be replaced.
"HHR P104 phone battery typically holds a charge for about 12 hours. However, it all depends on usage. It can hold charge for two days if not used for a longer period of time."
The MSI GX720-032US Intel Centrino 2 Core 2 Duo P8600 2.4 GHz Laptop can hold a charge for an average of 7 hours.