Single battery charging method: Charge a single battery with a 12-volt motorcycle charger to activate the battery, but this charging is relatively slow. It usually takes more than 7 hours to charge the battery. It will increase slowly. back to around 12V. It takes a long time to load all the individual blocks.
Low voltage charging method: Use a smaller charger for charging. For example, if it is a set of 60V-20AH batteries, then we use a 48V-20AH charger to charge them. This way in most cases it can be charged and the charging voltage will be closer to the voltage at both ends of the battery.
Precautions for using lithium batteries
Newly purchased lithium batteries will have a certain power, so users can use them directly when they receive them and use the remaining energy beforees charge after 2. For 3 normal uses, the lithium battery activity can be fully activated. New lithium batteries should be activated for up to 12 hours when first used.
Lithium batteries have no memory effect and can be charged at any time. However, it should be noted that lithium batteries cannot be over-discharged. Excessive discharge will result in irreversible loss of capacity. When the machine reminds you that the battery is low, it immediately begins charging.
In daily use, freshly charged lithium batteries should be left aside for half an hour until the charging performance is stable before use, otherwise the battery performance will be affected.
For the above content, please refer to People's Daily online - Here are some tips for copingto the impending “junk tide” of lithium batteries, Baidu Encyclopedia - Lithium Batteries
Category: Electronics and Digital
Problem description:
Regarding the "activation" problem of lithium batteries, many opinions are: the charging time should be more than 12 hours, repeated three times, so that it is enabled, but someone said it was wrong. Which statement is correct?
Analysis:
Regarding the "activation" problem of lithium batteries, many opinions are as follows: Charging time should exceed 12 hours, repeat this three times to activate the pool. This claim that "the first three charges require more than 12 hours" is obviously a continuation of the claim regarding nickel batteries (such as nickel-cadmium and nickel-metal hydride). This statement can therefore be consideredlike misinformation from the start. The charging and discharging characteristics of lithium batteries and nickel batteries are very different, and we can tell you very clearly that overcharging and overdischarging will cause huge damage to lithium batteries, especially lithium batteries. liquid ion. Therefore, it is best to charge according to standard time and methods, especially not to charge for more than 12 hours. The claim in many cell phone manuals that new batteries must be charged for more than twelve hours is false!
Additionally, cell phones or chargers with lithium batteries will lose power once the battery is discharged! is fully charged. Automatically stops charging, and there is no so-called “maintenance” charge that lasts more than 10 hours with nickel chargers. In other words, if youIf the lithium battery is fully charged and placed on the charger, it will be charged in vain. In addition to some mobile phones, if you do not remove the charger after charging for more than a certain time, the system will not only stop charging, but also start a discharge-charge cycle. Maybe the manufacturer of this approach has their own agenda, but it obviously harms the life of the battery and the cell phone/charger.
In addition, another aspect that cannot be ignored is that lithium batteries are also not suitable for over-discharge, and over-discharge is also very detrimental to lithium batteries.
When should you start charging during normal use
We often see this saying: Since the number of charges and discharges is limited, it should to be exhausted. battery of your cell phone as much as possible beforeto recharge it. However, this statement is obviously false! Under normal circumstances, you should charge with reserves according to the principle of exhausting the remaining battery power and then recharging it (but certainly not turning it off and recharging when it is impossible to hold the full amount) . day for 2 days, you must start charging on time! And when you need to charge to meet upcoming important events that are expected to result in charged communications, even if the battery still has plenty of power remaining, then you can simply charge. move forward, because you're not really losing the life of a charge cycle. The principle of recharging once the remaining battery power is exhausted is not to go to extremes! A widely spread saying, such as long-term charging, is "try to use the mobile phone battery, and it is better to use automatic shutdown."This approach is actually only applied to nickel batteries. The goal is to avoid the memory effect. Unfortunately, it also spreads to lithium batteries. There was an example of someone continuing to use their cell phone without charging it until it automatically turned off after a low battery warning appeared. As a result, the mobile phone in this example was unresponsive during subsequent loading and startup and had to be sent for maintenance. This is actually because the battery voltage is too low due to over-discharge, so it does not benefit from normal charging and power-up conditions. Practical experience proves this: the scrap rate of lithium batteries with a depth of discharge of 100% is 50% (years of facts have proven that only half of the maintenance supplies of lithium batteries with a depth of 100% discharge ofmore than 99% can be activated, and the remaining half is discarded!)
< p>Correct approach to lithium battery cell phones
To summarize, my most important tips for charging and discharging lithium battery cell phones during use are:
1. Charge according to the time and standard procedure even for the first three times Plug in the charger (line. charger) first, then plug the output end into the charging port of the mobile phone. Some people want to ask: Is it better to charge when the phone is on or off? Answer: Either way! Cell phone brands cannot charge the backup battery (on the motherboard) when they are turned off. A small lithium battery (powering the 32.768 clock crystal) can be used to charge the backup battery. Only direct charging in standby mode littlet charge the backup battery. battery !
2. When a low battery prompt appears on the mobile phone, you should try to start charging as soon as possible.; Lithium batteries are more susceptible to damage if over-discharged!
3. Activation of lithium batteries does not require special methods. Lithium batteries will be activated naturally during normal use of the mobile. Phone(s. If you insist on using the popular "first three charges and 12 hours activation" method, it will actually not be effective. Generally speaking, the charging time is between 2 and 4 hours depending on the battery capacity Therefore, all practices that pursue 12 hours of ultra-long charging and use lithium battery mobile phones to automatically shut down are wrong!