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# The Battery Usage Time of Two Way Radio

General the two way radio battery standby time standard usually refers to the following aspects:

1.Capacity

The Walkie Talkie battery capacity: Two Way Radio battery can be 2000mAh or 2500mAh, there are 3000mAh.But there is a bigger market to see to 5000mAh.(This must be a dummy label!).The proposal does not let the large capacity battery of walkie-talkie when buying, blinded your two eyes.

2.Current

The standby current of a walkie-talkie refers to the current of the walkie-talkie in the absence of a signal. It is usually an average of 20mA to 60mA, that is, the average is 40mA.

The receiving current of intercom depends on the volume of intercom. Generally, the volume of 0.5W is the best volume, and the power consumption is about 70Ma-80mA + the machine current is 60mA, which is about 140mA.

No receiving, no transmitting, standby time

Assume that the radio is not in working state (no transmitting and receiving), then the standby time of the intercom is equal to "battery capacity divided by standby current = standby time".Example: 1500mAh battery in addition to 40mA standby current is 37.5 hours.

There is receiving standby time.

Assume that the radio is not transmitting, usually standby, sometimes receive (10 minutes to receive 1 minute signal) then the standby time of the intercom is equal to "battery capacity divided by (9/10*40mA+1/10*140mA)"

Example: 1500mAh battery divided by (9/10*40m/A+1/10*140mA) standby reception time ≈30 hours.

There is transmiting standby time.

If transmit, assume that the 4W radio, operating current at 1.4A (1400mA), speaks 6 times per hour, each time for 10 seconds A total of one minute.

Then the battery working time is: battery capacity 1500/ (1/60*1400mA+6/60*140mA+53/60*40mA) working time ≈20.6 hours.

Most of the time we say the two way radio battery is calculated according to the standard of "The 5-5-90% cycle".

In the radio communications industry, we talk about radios being on a specific cycle. It’s called the 5-5-90% cycle time assumption. This basically means that when you use a radio, 5% of your time is spent transmitting, 5% receiving and 90% on standby.