Battery life calculator helps you calculate how many hours your device’s battery will run before it needs to be recharged. It considers some factors during calculations such as battery capacity and device power consumption. This way, you can better plan your usage and choose the right battery that aligns with your specific needs and preferences.
Battery life refers to the amount of time a battery can run before it needs to be recharged.
This is typically measured in hours or minutes and can vary based on various factors, such as:
Considering and managing these factors can help users maximize the battery life of their devices and ensure optimal performance over time.
To calculate the battery life simply divide the battery capacity by the power consumption of the device and a safety factor accounting for discharge efficiency
The formula to estimate battery life can be simplified as:
$$ Battery\ life = \frac{Capacity}{Consumption \times (1 - Discharge\ safety)} $$
In this equation,
You can easily find out how long a battery will last using the formula mentioned above.
Let's say we have the following values for a device:
Now, let's add these values into the formula:
\(Battery\ life = \frac{2000}{100 \times (1 - 0.10)}\)
First, calculate the value inside the parentheses:
\(1 - 0.10 = 0.90\)
Now add this value to the equation:
\(Battery\ life = \frac{2000}{100 \times 0.90}\)
Now, let’s do the calculations:
\(Battery\ life = \frac{2000}{90}\)
\(Battery\ life \approx 22.22 \ hours\)
So, the estimated battery life would be approximately 22.22 hours with the given values.
A regular smartphone equipped with a 5000mAh battery can stay powered for around two days with a single charge, especially when doing simple activities such as browsing the web and checking emails. The duration it lasts depends on how the device is used, and the estimate is based on common usage scenarios.
Device Category | Device Example | Battery Capacity (mAh/Wh) | Low Battery Life (Hours) | Moderate Battery Life (Hours) | High Battery Life (Hours) |
---|---|---|---|---|---|
Smartphones | Gaming phone (e.g., ROG Phone 6) | 6000 mAh | 3-4 (gaming) | 6-8 (mixed use) | 10+ (light use) |
Mid-range phone (e.g., Pixel 6a) | 4410 mAh | 4-5 | 7-8 | 10-12 | |
Budget phone (e.g., Redmi Note 11) | 5000 mAh | 5-6 | 8-10 | 12+ | |
Laptops | Ultra-thin laptop (e.g., MacBook Air) | 52.5 Wh | 4-5 (heavy use) | 6-8 (mixed use) | 9-10 (light use) |
Thin-and-light laptop (e.g., Dell XPS 13) | 58 Wh | 5-6 | 8-10 | 10-12 | |
Chromebook or basic laptop (e.g., Lenovo IdeaPad Flex 3) | 42 Wh | 6-7 | 8-10 | 12+ | |
Tablets | Media tablet (e.g., iPad Pro) | 7640 mAh | 5-6 (video streaming) | 8-10 (mixed use) | 12+ (reading) |
Reading tablet (e.g., Kindle Paperwhite) | 1880 mAh | 12-14 (reading) | 16-18 | 20+ | |
E-reader (e.g., Kobo Libra 2) | 1200 mAh | 20+ (reading) | 24-26 | 30+ | |
Smartwatches | Feature-rich watch (e.g., Apple Watch Series 8) | 309mAh | 18-24 (constant use) | 24-36 (mixed use) | 48+ (light use) |
Fitness tracker (e.g., Fitbit Charge 5) | 111mAh | 7-10 | 10-14 | 14-20 | |
Simple watch (e.g., Timex Weekender) | 48 mAh | 6-8 months | N/A | N/A |
Keep in touch
Contact Us© Copyright 2025 by calculatored.com