Many people have bad habits. Most people leave the electric car battery in the car without turning off the air switch and do not ride for several months. It took a few months to ride the bike again, only to find that the bike was dead and it was not charging. When charging, plug in the power, but always keep the green light state, even within 24 hours can still keep the green light state, because the battery voltage is too low, and the charger output voltage is too large, charging can not input current into the battery.

This is what people often say when the battery is "starved to death". The voltage of this battery is usually only about 5.6V, not more than 6V. For this kind of batteries, most of them are replacement batteries. However, it is a pity to change a set of batteries for several hundred, so it is a pity to replace them, especially the batteries that have been warranted.

Here are five better ways to save this type of "starved" battery. It should be noted that most of them are not 100%.

1. Tandem method. Connect a 12-volt battery with a normal voltage in series to the entire set of batteries. For example, if the original battery is 48V-20AH, then we will string another 12V-20AH into another battery. A battery with a sufficient 12V battery has a voltage of about 13V. The voltage of the entire battery can be increased after being connected in series, and then charged with the original charger, so that it can be charged on the charger. After the charger is plugged in, the charger will Will light up, and the charger can be charged at this time. When the charger turns to the green light, string the battery and then take it out. Then charge it normally.

2. Parallel method. This method is a bit cumbersome. For example, this car was originally a 48V-20AH battery, and we paralleled another set of 48V-20AH batteries. As we all know, the voltages in the parallel circuit are equal, and the high voltage end flows into the low voltage end. Many battery dealers also use this method to detect batteries that are completely useless. Recharging can also achieve the purpose of charging. The principle is this, a battery in series, the principle is similar. At the same time, the voltage of the whole group will be increased.

3. Low-voltage charging method. Choose a miniaturized charger for charging. For example, a set of 60V-20AH batteries, then we use a 48V-20AH charger for charging. Therefore, in most cases, you can also recharge. The principle of the first method is similar to the first, that is, the charging voltage is close to the two ends of the battery.

4. Single battery charging method. Using a 12-volt motorcycle charger to charge a single battery can activate the battery, but this charging speed is slow, generally charging for more than 7 hours, and the battery voltage will slowly rise to about 12V. It is very time consuming to fill completely.

5. Special charger method. Tianneng charger automatically recognizes the battery voltage, no matter how many volts the voltage of a set of batteries, it can automatically recognize the voltage, and can charge all. For example, the original car was a 60V-20AH battery, but now it only has a battery below 30V, which can be charged at any time. When the voltage rises, it fully adapts to the higher first-order voltage and recharges. Tailing, Lvjia electric vehicles and Jinpeng tricycles are matched with chargers of this brand.

Plus lithium battery How to activate "starved to death"? Portable or mobile phone battery.

The battery activation on Lenovo's power management software is called "power gauge calibration". When the power is detected through the Everest on the computer, the following is a "design capacity", the following is a "full charge capacity", if the two values are the same, then the "battery loss" item will be seen below as 0%; generally In other words, the battery that has just been left out of the factory or left for a long time without maintenance in time, "full charge capacity will be less than the "design capacity", the battery loss that can be seen at this time is 1%. In other words, the battery is not "fully charged", we need "Fully charge" (uninterrupted charging for more than 12 hours after fully discharged) to "fully develop" the "potential" of the battery. This full charge process is called "activating the battery", power management software like Lenovo Thinkpad It has a functional principle similar to "power ruler calibration".

Some people think that old technology batteries like NiMH need to be activated. Lithium battery In theory, it is necessary to form a layer of SEI on the negative electrode. . But this process has actually entered the production test stage. I personally feel that consumers’ misunderstanding of batteries leads to such services.

Your phone is "starved" to death and cannot be turned on and cannot be charged. You need to activate it at this time! The first kind of so-called starvation is the phenomenon that the battery has been empty or the battery is very low, causing the battery to be unable to charge. So there are currently two ways to activate the so-called: First, use a universal inflatable for about 20 minutes to activate. 2. The voltage for the mobile phone repair shop should be slightly higher, for example, a 12-volt power supply can be activated. Specifically, the positive and negative poles of the power supply are placed in the positive and negative poles of the battery for tens of seconds or even a few minutes to power on it ! In the end, after activation, it can be directly charged as before. Will it have a significant impact on the lifespan?

Use the meter to charge. (If the above method does not work and the battery is not faulty, you need to use the "regulated power supply" to activate, the black wire is connected to the negative electrode of the battery, and the red wire is connected to the positive electrode of the battery, and the charging voltage reaches 3.8V, you can use Lithium battery The device does not need to be charged for 12 hours the first time it is used. This is unnecessary!