Long charging hazard and deep charging of the lithium battery
Long charging may cause overload. When the battery is fully charged, the lithium battery or charger will automatically stop charging. Charging the nickel battery charger for 10 hours is not called “turbulence.. In other words, if your lithium battery is full, the charger will have a white charger. And none of us can guarantee that the characteristics of the battery's charge and discharge protection circuit will never change and that the quality will be perfect, so your battery will be in danger for a long time. This is another reason why we refuse to charge for a long time.
On some machines, if you do not remove the charger after charging for a certain period of time, the system will not stop charging, but will initiate the discharge-charge cycle. Perhaps the manufacturer of this approach has its own purpose, but it is clearly not good for battery life. At the same time, the long charging process takes a long time and usually needs to be done at night. In China's electricity grid, the voltage fluctuates in many places at night, and fluctuates a lot. As mentioned above, the lithium battery is very sensitive, much less resistant to charge and discharge fluctuations than nickel, which creates additional danger.
In fact, the shallow charge is more beneficial for the lithium battery. Only when the power module of the product is calibrated to lithium battery, you need to charge deeply. Therefore, products using a lithium-ion power supply do not need to be trapped in the process and everything is convenient and can be charged at any time.
24Axx
Energizer Rechargeable AA Batteries, NiMH, 2000 mAh, Pre-Charged, 4 count (Recharge Universal)