Many people have bad habits, often people do not put electric car batteries at home, the air switch is not turned off, do not ride for a few months. When I came back to the bike a few months later, I found that the car was dead and the charge could not be charged in. The charger is plugged in, but it has always been green, even if it is inserted 24 hours a day, because the battery voltage is too low, and the charger is too different from the charger output voltage, the charger is unable to flush the electricity into the battery.
This is what is commonly said to be that batteries are "starved to death". The voltage of this battery block battery is generally only about 5.6 V, which does not exceed 6V. For such batteries, most of them are batteries. But it is a pity to replace a group of batteries with hundreds of batteries, especially those that have just passed the warranty.
Here are five better ways to save most of these "starved" batteries. Note that most of them are not 100%.
First, series method. A 12-volt battery with a normal voltage is connected to the entire group of batteries. For example, the original car is a 48V-20AH battery, so we connect another 12V-20AH battery. A sufficient 12V battery voltage is about 13V, after series can increase the voltage of the whole group of batteries, and then use his original charger to charge, so that the charger can be plugged in, the charger is a red light, at this time can be charged in. When the charger changes to a green light, take off the battery that is connected in series. And then charge it normally.Second, parallel method. This method is a little more troublesome. For example, the vehicle turned out to be a 48V-20AH battery, and we parallel a group of 48V-20AH batteries. It is known that the voltage of the parallel circuit is equal, and the high voltage end will flow to the low voltage end. This method is also used by many battery dealers to detect batteries that have no electricity at all. Then charging can also achieve the purpose of charging. This principle is similar to that of concatenating a battery. It also increases the voltage of the whole group.
3. Low voltage charging method. Choose the primary one charger to charge. For example, if it is a set of 60V-20AH batteries, then we are charging with 48V-20AH chargers. In this way, in most cases, it can also be added. The principle is similar to the first, which brings the charging voltage closer to the voltage at both ends of the battery.
4. Charging method of single battery. Charging a single battery with a 12-volt motorcycle charger can activate the battery, but this kind of charging is relatively slow, generally it takes more than 7 hours to charge, the battery voltage will slowly rise to about 12 V. If it takes a lot of time to charge all the pieces.
5. Special charger method. The Tianneng charger automatically recognizes the battery voltage, no matter how many volts a group of battery voltages have, it can automatically identify the voltage, and he can charge it in. For example, the original car is a 60V-20AH battery, now only less than 30V, it can still be charged inside. With the increase of voltage, it is fully adapted to the higher voltage, and then charge the battery. Tailing, Lujia electric car, Jinpeng tricycle matching this brand charger.Battery activation is called "power scale calibration" on Lenovo power management software. When the PC terminal uses Everest to detect the power supply, there is a "design capacity", followed by "full charging capacity". If the values of the two items are the same, you will see that the "battery loss" item below is 0%; generally speaking, the "full charging capacity" of the battery that has just left the factory or has not been maintained in time will be less than the "design capacity", at this time you will see that the battery loss is 1%. This means that the battery is not "fully filled", and we need to carry out "full charge and discharge" (uninterrupted charging for 12 hours or more after full discharge) to fully "develop" the "potential" of the battery. This complete charge-discharge process is called "activation battery". Lenovo Thinkpad and other power management software has a "power scale calibration" function principle is similar.
Personally, I think some old technology batteries, such as NiMH, need to be activated.
Lithium Battery theory needs to be intensified because a layer of SEI protective layer needs to be formed at the negative electrode. But the process has actually been completed in the production testing phase. Personally, I think consumers have such a service as a result of misunderstandings about batteries.
In addition, how to activate lithium battery "starved to death"? Laptop battery or cell phone batteryYour cell phone battery is "hungry" to death, can not turn on the machine can not charge the electricity, at this time need to activate! First of all, starving is the phenomenon that the battery can no longer be recharged when the battery has been dead or when the power is very low. Then there are two ways to activate the so-called activation: one is to use universal filling for about 20 minutes to activate. The second is to give the mobile phone maintenance shop a more professional voltage slightly higher such as 12 volts of power to activate, specifically put the power supply positive and negative electrodes on the battery positive and negative electrode for tens of seconds or even a few minutes to power it on, open it! Finally, after activation, it is possible to charge with direct charging as before, and it is not known whether it will have a significant impact on life expectancy.
Charge it with an instrument. (if the above method does not work, the battery is not faulty, it needs to be activated with a 'voltage stabilizing power supply', black wire to battery negative electrode, red battery positive electrode, charging voltage up to 3.8 V, can) use lithium battery device, the first time you do not need to charge for 12 hours, this is not necessary!
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