1. Before the battery leaves the factory, the manufacturer has activated and precharged it, so the battery has residual power. Some friends said that the battery is charged according to the adjustment period, but the standby time is still seriously insufficient. This is indeed a real battery, in this case, the adjustment period needs to be extended and then fully charged and discharged 3-5 times. 2. If the newly purchased mobile phone battery is lithium-ion, the first 3-5 charges are generally called the adjustment period and should be charged for more than 14 hours to ensure the lithium-ion activity is fully activated. ion. Lithium-ion batteries do not have a memory effect, but have high inertia. They must be fully enabled to ensure optimal performance for future use. 3. Some automated smart fast chargers only say they are 90% fullwhen the light changes. The charger will automatically switch to slow charging to fully charge the battery. It is best to use the battery after it is fully charged, otherwise the usage time will be shortened. 4. Lithium batteries do not need to be specifically discharged before charging. Improper discharge will damage the battery. When charging, try to charge slowly and reduce fast charging; the time should not exceed 24 hours. Only after the battery has undergone three to five complete charge and discharge cycles will all the chemicals it contains be “activated” to achieve optimal usage. 5. Please use the charger from the original manufacturer or a reputable brand. For lithium batteries, use a special charger for lithium batteries and follow the instructions, otherwise the battery will be damaged or even dangerous. 6. Many usesUsers often leave their cell phones on while charging. In fact, it can easily harm the lifespan of the mobile phone, because during the charging process, the circuit board of the mobile phone heats up at that time. external call, instant reflux may occur. Electric current can damage the internal parts of the phone. 7. Battery life depends on the number of repeated charges and discharges. You should therefore try to avoid charging when the battery has residual energy, as this will reduce its lifespan. When the mobile phone is turned off for more than 7 days, the mobile phone battery should be completely discharged and fully charged before use. 8. Cell phone batteries all discharge automatically. When not in use, nickel-metal hydride batteries discharge to approximately 1% of their remaining capacity each day, and theLithium batteries discharge to 0.2% ~ 0.3% of their remaining capacity each day. When charging the battery, try to use a dedicated socket and do not share the socket with the charger, TV and other household appliances. 9. Although the phone is within the network coverage area, it is no longer able to receive and make calls when turned off and charging. At this time, you can use the missed call forwarding function of the mobile phone to transfer the mobile phone to the landline around you to avoid incoming calls from being lost. This method is also applicable when the mobile phone is not within network coverage. area where the signal is weak and cannot be connected temporarily. ten. Do not expose the battery to high temperatures or intense cold. For example, during the dog days of summer, you should not leave your phonein a car to expose him to the scorching sun or take him to an air-conditioned room and place; place it in a place where the air conditioner blows directly. When charging, it is normal for the battery to be a little warm, but it should not withstand the “suffering” of high temperatures. To prevent this from happening, it's best to charge at room temperature and not cover the phone with anything. 11． Nickel-cadmium (N iCd) batteries must be completely discharged before charging and must be fully charged after recharging.electricity. 12. If the cell phone battery has been left unused for too long, it is best to contact the cell phone maintenance department to request battery reconditioning. You can also use a DC voltage regulator yourself to adjust the voltage to 5~6 V. and current to 500~600 mA and connect the battery byns reverse. Note that you can release it as soon as you touch it and repeat up to three times. After this process, use the original charger to charge during the "adjustment period". 13. The longer the charging time, the better. For batteries without protection circuits, charging should be stopped once they are fully charged, otherwise battery performance will be affected by heat or overheating. 14. Lithium-ion batteries must use a special charger, otherwise they may fail to reach saturation and affect their performance. After charging, avoid leaving it on the charger for more than 12 hours, and separate the battery from the cell phone when not in use for a long time.
Than lithium batteries or lead-acid batteries should be used for new energy vehicles
Huawei P40, EMUI10 as an example:
Automatic shutdownue of the phone when it is discharged is not harmful to the phone, because the automatic shutdown itself when the phone is off is a self-protection setting of the phone. When the battery voltage is lower than the value setting, it will cause a shutdown. If the phone won't turn off without power, the real damage to the phone's battery is due to the timing. the battery voltage drops to a certain level, if it continues to be used, the battery will be over-discharged, causing it to be discarded after recharging.
There are many types of rechargeable batteries on the market, such as hydrogen batteries, nickel metal hydride batteries, nickel cadmium batteries, lithium batteries, etc., but some of them have memory functions and they will remember every time. Therefore, you have to use it up and recharge it every time. If it is not exhausted, the storage capacityge will decrease over time, the battery will no longer be able to store electricity. called battery aging, but most smartphone battery brands usually use lithium-ion battery and have almost no memory function, so even if the phone automatically turns off when it runs out of power , you just need to charge the phone. .
Note: This answer applies to smartphones from most brands such as Huawei and Apple.
Can a 72 volt, 75 amp lithium battery be paired with a ten amp charger?
Pacific Automotive Network uses lithium batteries for vehicles new energy. Energy density. Lithium batteries can basically reach 200~260wh/g, the highest even exceeded 300wh/g, while the energy density of lead-acid batteries is generally only 50~70wh/g. Therefore, based on the density of the gMingyue group, lithium batteries have relatively strong endurance, and the demand for new energy vehicles with strong endurance is relatively large, so it is better to use lithium batteries.
2. Lifetime.
Generally speaking, the most popular lithium batteries at present are ternary lithium batteries and lithium iron batteries. Generally speaking, the cycle number of ternary lithium batteries can reach more than 1,000 times, while the cycle number of lithium iron batteries can reach 2,000 times. However, the number of cycles of lead-acid batteries is only about 300-350 times, so the life of lithium batteries is about 3-6 times that of lead-acid batteries. forFor electric vehicles, if lead-acid batteries are used, the batteries should be replaced every two to three years and the life of the vehicles usedreading lithium batteries will be extended accordingly.
3. Battery safety.
After all, not long ago, the problem of spontaneous combustion of new energy vehicles still attracted the attention of many consumers. Most of the reasons why electric vehicles spontaneously catch fire and explode are due to battery charging and discharging. If the lead-acid battery is charged for too long, it will produce a large amount of hydrogen and oxygen. If these gases are not vented in time, they will explode when encountering an open flame, which is also very dangerous. Most lead-acid batteries currently on the market do not have overcharge protection, meaning they are likely to be dangerous once overcharged. In this regard, lithium batteries are relatively safer.
From a global perspective, Mingyue Group believesthat new energy vehicles are more suitable for lithium batteries, because lithium batteries have high energy density, are lighter, have high charge and discharge rates, have a long service life, and have no effect of memory will not cause a decrease in battery capacity or a shortened battery life due to misuse. And recently, many large companies have also invested in transitioning to more lithium batteries, which offer better safety performance.
(Images/Text/Photos: Pacific Automotive Network Q&A)
72 V 75A Lithium batteries are not compatible with ten amp chargers. The 72V 75A lithium battery cannot be charged with a current of 10A. This is because the rated voltage of 72V 75A is 72V and the rated current is 75A. The current nominal of 72 V 75 A is higher than the current of 10 A.
If you charge a 72 volt lithium battery at 75 amps with 10 amps, the charging speed of the lithium battery will be slowed down or the battery will not charge. Therefore, the battery is 72 volts at 75 amps. lithium battery cannot be charged with 10 amps.
Protective measures
Once the lithium battery cell is overcharged to a voltage above 4.2V, it will start to output side effects. The higher the overload voltage, the higher the risk. Once the lithium battery cell voltage is higher than 4.2V, the number of lithium atoms remaining in the positive electrode material is less than half. At this point, the storage cells often collapse, causing a permanent loss of battery capacity.
If the charge continues, since the s compartmentstorage of the negative electrode has been filled with lithium atoms, the subsequent lithium metal will accumulate on the surface of the negative electrode material. These lithium atoms will grow dendrites from the surface of the negative electrode towards the lithium ions.
These metallic lithium crystals will pass through the separator and short-circuit the positive and negative electrodes. Sometimes the battery explodes before a short circuit occurs. This is because during the overcharging process, the electrolyte and other materials break down to produce gas, causing the battery shell or pressure valve to swell and rupture, allowing oxygen to escape. enter and react with lithium. The atoms accumulated on the surface of the negative electrode thus explode.
Therefore, when charging lithium batteries, the upper voltage limit should be set so that the service life, caPacity and battery safety can be taken into account at the same time. The ideal upper limit of charging voltage is 4.2 V. Lithium batteries should also have a lower voltage limit when discharging. When the cell voltage is lower than 2.4 V, some materials begin to be destroyed.
Since the battery will discharge automatically, the longer it sits, the lower the voltage will be. So it is better not to stop discharging at 2.4V. During the period when a lithium battery is discharged from 3.0V to 2.4V, the energy released is only about 3% of the battery capacity.
Therefore, 3.0V is an ideal discharge cutoff voltage. When charging and discharging, in addition to voltage limitation, current limitation is also necessary. When the current is too high, the lithium ions do not have time to enter the storage locationage and will accumulate on the surface of the material.