How Long 18650 Batteries Last?

The rechargeable 18650 batteries have an integral Battery Management System (BMS) which helps to maximize the performance of the battery by automatically balancing the battery cells and preventing the batteries from being overheated or overcharged. This integrated BMS design allows batteries to be used as a drop-in replacement for any for the application which requires high performance, good quality, dependable and lightweight batteries.

How Long it takes to charge 18650 batteries ?

The 18650 battery charging is usually equal to the ratio of normal capacity to the normal charging current, but the 18650 battery charging time needs to modify this factor of impedance. A coefficient is mainly designed as a comparison from the value of the charging time which works according to the magnitude of the impedance. The battery time for above 18650 battery has evolved into 18650 charging time is equal nominal capacity which can be divided by the charging current and multiply by a coefficient.

Due to the higher capacity of the 18650 lithium battery and the characteristics of the Lithium battery charged differently, the coefficient is calculated as the 1.5 charging time of the Lithium 18650 battery.

For instance, the 18650 battery capacity is generally 1800~2600mAh. According to this formula, the choice of the quality charger can help increase the battery life of 18650 battery, accordingly.

These are the few conditions which help one to calculate or analyze the average age of 18650 battery but that highly depends upon the specific usage and safety precautions taken to keep a battery for a long time.

How long an average 18650 battery lasts ?

The 18650 battery is the rechargeable battery and it entirely depends on the usage of a battery or device that how long the battery life of 18650 remains usable. The 18650 battery cells constantly degrade over the times with each cycle of charging and it can be difficult to analyze that the 18650 will last longer or not. To keep them longer one needs to protect them and apply a few tricks to prevent them from any damage. The battery life also depends on the ways you're storing them. There are two very simple rules that the partial charge to the 18650 battery in a cool environment can extend the battery life but the full charge to the battery in a comparatively hot temperature could lead to certain damages and shorten the battery life simultaneously.

It also depends on the time when you consider the batteries should be worn out. Batteries usually lose the charge capacity slowly and increase the internal resistance. One can understand the phenomenon as the old battery can still be useful but not for as long and not on the full bright mode. Most of the time highly drained battery cells drop to 60% of the capacity of the rate by the end of 300 cycles. A single cycle can be of 4.2v to 2.5 v under load in most cases. One should expect the better battery life if it charges before the complete drained battery of the device because in that case, you do not fully charge the battery. Top line cells are usually rated at 300-500 full cycles. The deeper you discharge them the fewer the cycles occur. Further, swapping the 18650 batteries on an increased voltage can substantially increase the number of cycles but you may get lesser use of the battery per charge. The higher ampere loads can put more burden on the 18650 batteries. This judgment has been made widely by testing the batteries in the specific conditions and it's performance after the charge. If you experience this behavior of 18650 batteries with different sets or devices then you must purchase a good quality charger followed by the two or multiple sets of new cells. There are several brands offer the quality battery.

Best ways to make 18650 battery long last.

Lithium-ion batteries can be used in several different ways, plus there are many ways which can increase the battery life of 18650 batteries before using them with a new one. To keep 18650 batteries for a long time it is recommended to charge them less as they are already charged batteries, and charge them just before using the electric device in which they are installed. Keeping 18650 batteries for a long time required some specific tactics where some are easy to apply while some are quite inconvenient for the users. Some are effective for a battery time while some may cause harm to batteries as well. However, adopting those techniques can slow down the age of the batteries, one of them is allowing a battery to cool down at room temperature before using it, once it's fully charged. Most of the rechargeable battery has a standard charge rate of 1.0A to 1.5A and a rapid charge rate of 4A, therefore it is recommended to charge the battery at the lower rate of current. It is also restricted to charge a battery at a temperature below than the 0°C/32°F as it may cause the metal to be plated inside a battery which could possibly result into the internal short circuit and the battery explosion of 18650.

The user should make sure the efficiency of the charger as it should stop charging once the charge in the device is complete. Users are advised not to use the trickle charger with Li-ion battery type as the continuous holding of the battery at the trickle charger voltage can damage it permanently.