Gauging your batteries

Being able to proactively replace batteries before they run out will make your life a lot more convenient, but isn’t always that easy to get right. Firstly, battery products differ in terms of their lifespans, which is further affected by their expectations on performance, and which appliances or devices they are meant to power. So, to give you the tools to be able to better tell when they will be depleted so that you can act in good time, here is some information that will help you understand the life-cycle of the battery.

Measuring the capacity of a battery

Units of battery capacity are generally measured and set out by manufacturers in terms of how much energy it is capable of storing. This can be measured as watt-hours (Wh), kilowatt-hours (kWh), or ampere \-hours (Ahr). The type of measurement depends on the overall capacity of the battery, with Wh measuring smaller capacities and Ahr measuring those with extremely high ones, and can be represented as follows:

1Wh = 1 watt per hour

1kWh = 1 kilowatt per hour

1Ahr – 1 ampere per hour.

Understanding a battery’s life-cycle

Particularly when it comes to recyclable batteries, their lifespan is generally measured in terms of charge and discharge cycles, which is otherwise known as its cycle life. This is measured in terms of how many cycles a battery can reach in terms of charges and discharges, before it falls to below 80% of its original capacity. The number of charge cycles that a battery can support before falling below 80% and becoming noticeably less effective, will of course vary depending on battery types, manufacturers and their application.

Calculating Amp hours

To calculate a required battery life depending on the voltage of the device being powered, one must look at its capacity in terms of amp hours, and see how it is being used. The formula looks like this:

Wattage=Amps x Voltage

So, if we take a 100-Ahr battery, and we plan on using it for 20 hours, we could essentially say that it would be providing 5amps per hour, for the duration of its use. So, for a 12-volt battery, the formula would look like this:

Wattage= 100 amperes x 12 volts

The watt hours would therefore equal 1200, or 1,2kWh.

We now divide the total 1200-watt hours up by the expected operation time which is 20 hours, and find that it operates at 60-watt hours for its duration.

Contact Just Batteries Today

Gauging your exact power needs and procuring the right batteries for the task will make power management in your home or place of work a simple task. For assistance with sourcing battery solutions from trusted battery wholesalers in South Africa, contact a consultant from Just Batteries today to ask us questions and find out more. Or for further details, feel free to visit our website to learn more about our company, products and services.

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