To determine whether the rechargeable battery life of the Reading rechargeable book light is normal, you can consider the following aspects.
First, you can observe the usage time of the book light. When fully charged, if it can be used for a long time when it is newly purchased, and the usage time after charging is significantly shortened as the number of times it is used increases, this may mean that the battery life is gradually declining. For example, if it can be used continuously for 10 hours, but now it can only be used for about 5 hours after fully charged, it may be a manifestation of battery performance degradation.
Second, pay attention to changes in charging time. Under normal circumstances, the charging time is relatively stable. However, if you find that the charging time is greatly shortened, for example, it originally took 3 hours to fully charge, but now it is shown as fully charged in 1 hour, and the usage time is also very short, this may indicate that the battery capacity has been reduced and cannot store enough electricity, and there may be problems with the battery life.
In addition, check the number of charging cycles of the battery. Generally speaking, rechargeable batteries have a certain limit on the number of charging cycles. If the book light has been used for a long time and exceeds the number of charging cycles marked by the manufacturer, then the battery life is likely to be close to or reach its limit.
You can also check the appearance of the battery. If the battery is bulging, deforming, leaking, etc., this is obviously a sign of battery damage, and its life will inevitably be seriously affected.
In addition, compare the lighting brightness of the book light. Under the same brightness setting, if the light is significantly dimmed, even if the battery is fully charged, it may be that the battery cannot provide sufficient power support, indicating that the battery life is poor.
In addition, consider the operating temperature of the book light. If the book light heats up abnormally during use, this may accelerate the aging of the battery and affect its life.
Some book lights may be equipped with a battery health detection function, which can be used to check the health status of the battery and the remaining life estimate through the relevant indicator light, display or connected mobile phone APP.
For example, a Reading rechargeable book light can continuously illuminate at the highest brightness for 8 hours after being fully charged in the early stage of use, and the charging time is about 2.5 hours. But after one year of use, it can only illuminate for 4 hours after being fully charged, and the charging time is shortened to 1.5 hours. At the same time, the light brightness has decreased, which indicates that the battery life may have been damaged to a certain extent.
In short, by comprehensively observing the performance of multiple aspects such as usage time, charging time, appearance, brightness, temperature, etc., combined with information such as the age of the book light and the number of charging cycles, it is possible to more accurately judge whether the rechargeable battery life of the Reading rechargeable book light is normal.
