Battery capacity is an important parameter affecting battery life. Batteries with a larger capacity last longer than those with a smaller capacity.
How to determine battery capacity?
The first thing to do is to completely discharge AA power supplyThis can be done with a common electrical appliance, such as a flashlight or a micro fan. A lint remover will also work. Then, take chargerWith automatic shut-off. Such devices charge at a fixed current. The charging current is indicated on the charger body. It is usually 150 mA.
After that, you install your power source, record the time, and observe how long it takes charger will turn off. Batteries with 2000–3000 mAh will charge at 150 mA for half a day.
If determining battery capacity is a serious matter for you, you might want to invest in an advanced charging unit. It has an indicator that displays charging parameters such as voltage, total mA per hour, and more.
You can make it even simpler, take the intellectual charger! It discharges the batteries completely and charges them at a low current. The device repeats this process multiple times, thereby restoring their maximum capacity. The device calculates the capacity based on the charging time.
Formula For capacitance measurements
Q is the battery capacity or its charge. U is the voltage. E is the energy. T is the time. I is the current.
To determine the capacity, the power source must be completely discharged. It is then charged with a specified current. The time it takes to discharge is measured. The product of energy I and time T is battery capacityQ=I*T. Applying this to a battery, after it is completely discharged it can be charged, but the battery cannot.
How can you determine the capacity of a battery?
Our industry produces a variety of battery capacity testers. Here are some of them:
- Multimeter
- Tester pendant
- USB tester
