The core of the battery life of a portable power station depends on the matching relationship between "battery capacity" and "actual power consumption", but in actual use, it will be affected by multiple factors, especially in the high temperature and multi device power supply scenarios of the African market, where the impact of these factors is more significant. The following is a specific analysis (combined with product promotion and actual user usage scenarios, with popular explanations and practical suggestions attached):
1、 Core determinants (basic logic)
Theoretical calculation formula for battery life:
Battery life (hours) ≈ Effective capacity of portable power supply (Wh) × Conversion efficiency ÷ Total device power consumption (W)
(Example: 1000Wh power supply, conversion efficiency of 85%, supplying power to a 100W refrigerator, theoretical battery life ≈ 1000 × 0.85 ÷ 100=8.5 hours)
Portable power supply's own parameters
Battery capacity (Wh/Ah): The core indicator is that the larger the capacity, the longer the battery life (marked as "1000Wh" and "20000mAh", note that 1Wh=voltage x Ah, such as 20000mAh=74Wh for a 3.7V battery).
African users are concerned about "how long can it last during a power outage", and the text directly states "1000Wh can provide 8 hours for 100W household appliances", which is easier to understand than simply listing parameters.
Conversion efficiency (usually 80% -90%): The loss rate at which a power source converts direct current (battery) into alternating current (household appliance). The higher the efficiency, the more actual available electricity.
Influencing factors: output power (efficiency may slightly decrease when operating at full load), power supply heat dissipation (attention should be paid to high temperature environments in Africa).
Actual power consumption of external devices
Rated power (basic power consumption): The power of the device during normal operation (such as 10W for LED lights, 60W for electric fans, and 100W for laptops). The lower the power consumption, the longer the battery life.
Combining the power of commonly used household appliances in Africa (such as small refrigerators 100-150W, televisions 50-100W, mobile phone chargers 5-10W), mark "Suitable for XX devices with XX hours of battery life" on the product details page to improve user decision-making efficiency.
Starting power (specific to inductive loads): For devices with motors such as refrigerators, air conditioners, and water pumps, the power consumption during startup is 2-5 times the rated power (for example, a 150W refrigerator may have a starting power of 300-750W), which will instantly consume more electricity. If the peak power of the power supply is insufficient, it may not be able to start or the battery life may be shortened.
Emphasize the "peak power" of the product (such as a 1000Wh power supply with a peak power of 3000W) to solve the pain point of African users' inability to start the refrigerator. The text can be written as "supporting the startup of high-power devices such as refrigerators/water pumps, and can be used normally even in power outages".
Device usage status: The power consumption of the same device varies in different scenarios (such as when the air conditioner is turned on at low temperatures compared to high temperatures, or when running large software on a laptop compared to office use). Continuous high load will accelerate power consumption.
2、 Environmental and usage scenario factors (key focus of the African market)
Ambient temperature
The optimal working temperature for lithium batteries is 10 ℃ -35 ℃. In some parts of Africa, high temperatures (40 ℃+) or low temperatures (which may be lower than 0 ℃ at night in deserts) can temporarily reduce battery capacity (such as reducing capacity by 10% -20% at high temperatures) and shorten battery life.
Number of devices powered simultaneously:
When multiple devices are powered simultaneously, the total power consumption is equal to the sum of the power consumption of each device (such as 10W for LED lights, 60W for electric fans, and 5W for mobile phone charging at the same time=75W). The higher the total power consumption, the shorter the battery life.
Power supply mode and interface selection:
AC power (AC socket): There is a loss in conversion efficiency, suitable for high-power equipment;
Direct current (USB-A/Type-C/DC interface): No conversion required, lower loss, longer battery life (such as charging a phone directly with Type-C, which is more energy-efficient than connecting a charger through an AC socket).
Power supply's own heat dissipation and aging:
Long term high load operation (such as continuously supplying power to a 1500W device) can cause the power supply to heat up. If the heat dissipation is poor, it may trigger overheating protection or reduce conversion efficiency, affecting battery life;
The service life of lithium batteries is about 500-1000 charge and discharge cycles. The more cycles, the more capacity will decrease (such as the capacity may drop to 80% of its initial level after 2 years of use), and the battery life will gradually shorten.
3、 User operable battery life optimization techniques
Prioritize supplying power to low-power devices and avoid starting multiple high-power devices at the same time (such as opening the refrigerator first and then turning on other devices);
Turn off device idle functions (such as TV standby and phone fast charging mode) to reduce actual power consumption;
Avoid storing or using the power supply for a long time in high/low temperature environments. If necessary, cover it with a sunshade cloth or place it in a well ventilated area;
Regularly charge and discharge the power supply (such as once a month) to maintain battery activity and extend its lifespan.
