In our daily life, we often hear and use Ni-MH batteries and lithium batteries, but we rarely know the difference. Today we will introduce the differences between Ni-MH batteries and lithium batteries.
difference in life
The main difference between lithium batteries and Ni-MH batteries is that lithium batteries are more suitable for use in batteries that consume less power and require less current, while Ni-MH batteries are mainly used in devices with such current requirements as digital cameras. and power-hungry products.
Advantages and disadvantages of lithium batteries
Advantages: no memory effect, light weight.
Disadvantages: high cost, low current, not resistant to overcharging (compared with Ni-MH).
Advantages and disadvantages of NiMH batteries
Advantages: low price, strong versatility, large current, environmental protection and stability.
Cons: Heavy weight, short battery life.
Different charging methods
Consumer perception assumes that batteries are used in the same way.
Newly purchased lithium battery: use it for the first three times until the phone is turned off naturally, and then charge the phone to full capacity with the original direct charger, and then continue to charge for about 1 hour (about 2 hours for more than 2000mah).
Daily life: just fully charge, and do not charge for more than 1 hour after full. Avoid charging late at night (grid voltage is high). The battery can be charged and used at any time, and can be used until alarm or shutdown. Note that the battery that is used to shut down should be charged as soon as possible, otherwise the battery will self-discharge and the voltage will continue to drop, which may cause the self-locking protection to fail to charge.see more:24v 400ah lithium battery
Use: General lithium batteries can be charged, used and stopped at any time. Cycle life refers to the number of times of full charge and full discharge, and partial charge and discharge can be understood as a fraction of the life cycle. The key to the use of the battery: the battery is fully charged, and it can be charged for 20 minutes to half an hour to reach saturation, but it must be avoided for a long time after it is fully charged. Continuing to charge for a long time after it is full will cause side effects, resulting in a decrease in capacity and an increase in internal resistance, shortened capacity, and shutdown when a call is made. For machines with power chips such as PPC, it is best to use them until they run out of power, mainly because of the problem of power display and measurement.
Continuing to charge the battery after it is fully charged is very harmful to the lithium battery. If you continue to charge after full, side reactions will occur inside the battery, the active substances will decrease, the garbage will increase, the capacity will decrease, and the internal resistance will increase. Severe overcharging will directly damage the battery structure and cause the battery to be scrapped. Now some chargers also provide a charging protection mode, which will adjust the charging mode according to whether the battery is fully charged, which can effectively protect the battery.
Lithium-ion batteries can be charged at any time, and have limited impact on life. For PPC and other batteries with fuel gauges, it is recommended to charge after automatic shutdown to avoid impact. It can be charged at any time, and can be stopped at any time. If it is fully charged and continues to charge, it will have an impact on the life of the battery.
However, Ni-MH batteries are different from lithium batteries, and the specific conditions should be based on the actual instructions. Because different manufacturers have different usage standards.