5 batteries are generally used once the battery carbon batteries, alkaline batteries and secondary batteries nickel cadmium batteries, nickel metal hydride batteries, so the 5th battery voltage will vary due to battery types, because carbon batteries and alkaline the nature of the battery voltage is the same, so you can put on the 5th battery voltage is divided into one on the 5th battery voltage, the 5th nickel-cadmium and nickel-hydrogen battery voltage on the 5th battery voltage.

1, one on the 5th battery nominal voltage of 1.5V, termination voltage of 0.9V, this alkaline batteries and carbon zinc batteries are the same. The criteria for determining a battery capacity is actually discharged to the discharge time of 0.9V, which is the most important performance parameters is the price of a battery group.

2, nickel cadmium batteries: nominal voltage of 1.2V, discharge voltage and discharge rate of about 8 hour rate discharge termination voltage of 1.10V, 5 小时 was 1.00V.
3, Ni-MH battery discharge termination voltage is generally defined as 1.0V, charge termination voltage of 1.5V, nominal voltage of 1.2V, nickel-cadmium and nickel-metal hydride AA batteries are generally in the termination voltage between 0.9V ~ 1.1V . As the popularity of lithium batteries, and now people often say the 5th lithium battery, that is actually equivalent to 14500 batteries, which the 5th nominal battery voltage is 3.7V.

Charge and discharge curves can help us understand the 5th stage characteristics of the battery voltage.

1, from the 5th carbon battery and alkaline battery discharge curve can be seen in a 3.9Ω discharge, alkaline batteries much slower rate of decline, which is alkaline batteries more durable root.

2, nickel-cadmium batteries and nickel-metal hydride battery charge and discharge performance comparison, charge termination, No. 5 nickel-cadmium than the nickel-metal hydride battery voltage drops on the 5th battery voltage much faster.

The 5th battery voltage is above the required mark in the battery case, battery charging should be noted that the use of over-charging and discharging the battery voltage on the 5th effect, when an overcharge and over discharge, the electrode structure would damage the battery reversible reaction can not be completely restored, so that permanent damage to the battery capacity. A battery will over-discharge, this time on the 5th battery voltage drops to 0.9V or less, it will form a leak, the battery can not be reused.