Best Way To Charge 18650 Lithium-Ion Battery

Do you know what is inside your smartphone’s battery? 99% is the lithium-ion battery or Li-ion battery. It’s the most popular type of rechargeable battery nowadays.

Besides smartphones, li-ion 18650 batteries can be in other devices like flashlights, smoking devices, laptops, and more electronics (laptops, smartphones, tablets…) to store and release energy. You can see more best 18650 battery review here.

But are you sure that you’re charging or discharging it right? It’s more than connecting to the charger and plugging to the socket.

Keep reading to check you’re doing right or not:

1. Only need to charge when the battery level is below 50% 

You may think that no need to remind you this thing, everyone knows that. But I really saw a few people did it. They said that they just wanted their phones never run out of battery.

Charging continuously doesn’t make your device’s functioning better. So, I just add this piece of information here to make sure you won’t do that. It’s obviously unnecessary.

2. Turn offdevices if possible

When we charge li-ion batteries, we shouldn’t use the devices. We should turn them off. By that, the lithium-batteries can reach the set voltage threshold without let or hindrance.

Hence, this deed increases charging effectiveness and safety as well. In other words, it will expand the batteries lifespan.

I know there’re times, countless times that we need to use our devices. Don’t worry about that for it doesn’t cause any serious or harmful effect on your devices. Just need to remember to limit the number of times as much as possible

3.Charge at the appropriate temperature

All battery manufacturers suggest users utilize and store cells at the temperature above 20 and under 25 degrees of Celsius.

They say a little lower, or higher storage temperature than recommendation can cause inefficacy. It’s measured a loss from 20-30 mAh for every 10 degrees variation.

The higher deviation leads to the bigger capacity’s loss, the bigger capacity’s loss leads to faster degradation.

We are unable to take control of the temperature. It’s God’s work. We just pay attention to too low or too high temperature and bring them away.

For example, in the winter when the temperature goes down to the freezing level, please don’t charge the 18650 batteries under that condition. Unless you want the length of cells life will be cut down quickly.

Heat is also a batteries adversary like the coldness. Undoubtedly it will shorten the cell’s life. Never charge the li-ion batteries or leave your devices powered by batteries near hot places such as inside the car, oven in the kitchen. Don’t let it exceed 60 degrees or else you have to buy a new one soon.

We all encounter the situation that the batteries are hot while using or charging. The cells are trying to tell you that they’re over-stressed by getting hot. They can’t speak! Don’t keep using or charging but stop it instead.

4.  Do partial charge rather than a full charge

This is no.1 rule of charging the li-ion battery correctly that every user has to know and follow. But also, it’s no.1 mistake which users made. It’s quite reasonable to think a fully charged devices is better than a partially charged one. That’s why we usually leave our devices until they reach 100% batteries level.

When it comes to the lithium-battery field, that common thinking becomesunreasonable. If you do a full charge, you will have your batteries worked atfull capacity. However, a full charge probably is a stress to the cells,resulting in reducing in the batteries life unintentionally.

In opposite, a partial charge can maintain or increase the number of batteries cycle life. And you have to accept an incomplete capacity. Generally speaking, a full charging is not good for your batteries.

Now you know, charge your devices until they reach a charge of about 85 % or a little higher, certainly not 100% then unplug them. If you forget to keep an eye on the device, don’t worry. It’s okay if it happens several times.

If you are storing an extra battery, I hope that it’s not fully charged. Why? Because if you do that, you are unintentionally setting the process of lithium-ion oxidation at the highest rate. It only should be 40% charged when it’s not used.

5. Discharge completely once a month

If talking to the charging, how can we skip the discharging?

These two parts have to go together. In the same way, if we do a partial charge, we should do a partial discharge. It means that we shouldn’t leave our devices to drop down to 0% of battery. 0% and 100% are two numbers we must avoid.

However, there’re times when we need to let our devices run out of battery. Modern devices have the smart battery, which can tell us how many minutes left for us to use the devices.

But if we keep the partial discharge, chances are causing the “digital memory”, consequently reducing the accuracy of the device power measure.

Yes, we’re recommended to do partial discharge, but after about 30 discharging times, we should do a full discharge according to battery specialists. Doing that helps re-calibrating the smart battery.

In conclusion

After reading this article, are you charging lithium-ion battery rightly?

If yes, you did a good job, and please share it that everyone will know how to take care of their devices. If no, now you know how to do it properly. Keep calm and charge batteries.