You don’t have to light up candles or carry a flashlight around when load-shedding strikes at night. There is a multitude of affordable battery and solar-powered options available in South Africa to light up your home during power outages. While electrical appliances like computers, TVs, refrigerators, ovens, and geysers require large backup power solutions to keep running, most modern lights use much less electricity.
LED-powered bulbs, for example, typically require between 3-12 watts (W) of power, compared to a desktop computer that needs around 200W, or a geyser that can demand 3,000W. This means that for two hours of load-shedding, an LED lamp will need only around 6Wh to 24Wh of power. To put this into perspective, a 4,000mAh smartphone battery offers 48Wh of capacity.
One of the most convenient ways to keep the lights on is to replace your normal light bulbs with bulbs that have built-in batteries that can be charged using the electricity connection of your house. When the power goes off, the bulb automatically switches from grid power to battery power, until the electricity connection is restored.Among the important features to consider with these bulbs include the socket type, how long the bulb’s battery will last during an outage, its charging time, and its brightness.
On the last point it is important to note that most manufacturers indicate the brightness of these bulbs for when the power is on, but not when it using the battery. Bulbs with built-in batteries drop their output power during an outage to allow the small battery to keep the bulb running for more than three hours, but it results in less light being produced. Below are battery-rechargeable LED lightbulbs to provide indoor lighting to your house during load-shedding. Where applicable, prices for both the screw-in (E27) and bayonet (B22) socket types are shown.
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