A 4000mAh battery life can last up to 4,000 hours, depending on the current required by the object being powered (measured in mA). You can calculate the battery life by dividing the capacity of the battery by the current required by the object.
How many times can a 4000 mAh charge?
You can easily calculate how often your devices can be charged with a power bank when you devide the capacity of the power bank by the capacity of your electrical device. For example: Capacity smartphone is 4000 mAh and power bank 12000 mAh. Then you can divide 12000 mAh by 4000 mAh and the answer is three times.
How long does it take to charge a 4000 mAh power bank?
How long does it take to charge the powerbank? It can take at least 4 hours for a full charge, depending on the charger used.
Is a 4000mAh battery good?
For an average user, a battery over 4,000mAh should be enough to last a day. In addition to the battery capacity, you should also look at the charging speed of the device. Introduction of fast charging has made it easier to charge your device and you no longer have to leave it plugged in overnight.Aug 4, 2021
How long does a 4000 mAh portable charger last?
With a high-speed charging 4000mAh capacity, this portable power bank can keep your devices charged for up to six hours, and includes a USB cable for instant charging of your cell phone, tablet, smart watch, portable speakers and more.
How long will a 4500 mAh battery last?
The powerful 4,500mAh battery of the Cat S61 gives you more than enough battery to last over a day of use*. The Cat S41 comes with a 5,000mAh battery to give you up to 38hours talk-time and 44days stand-by-time.