很多人有不好的习惯，经常人不在家将电动车电池放车上，空气开关也不关掉，放几个月不骑。几个月后再来骑行时就发现车子没电而且充电充不进去。充电器插上去，但是一直是绿灯，哪怕是24小时插着它也还是绿灯，因为电池电压过低，与充电器输出电压相差过大的话充电器是无法将电冲进电池的。

这种情况就是大家平常说的电池被“饿死”了。这种电池块电池的电压一般只有5.6V左右，不会超过6V。对于这样的电池，大多数是换电池。但换一组电池好几百，就这样换掉有点可惜，尤其是刚过保修的电池。

这里介绍五种比较好的方法，能将大部分的这种“饿死”的电瓶拯救过来。注意是大部分不是百分百。

一、串联法。在整组电池上另外串联一个正常电压的12伏电池。比如说，原车是48V-20AH的电池，那我们再另外串联一块12V-20AH的电池。一块电量充足的12V电池电压有13V左右，串联之后能够提升整组电池的电压，然后再用他原来的充电器进行充电，这样的话是可以将电充进去的，插上充电器之后，充电器是红灯，此时可以将电充进去。等充电器转为绿灯，就把那块另外串联上去的电池拿掉。然后再正常充电就可以了。

二、并联法。这种方法稍微麻烦一点。比如车辆原来是48V-20AH的电池，我们另外并联一组，48V-20AH的电池。大家知道并联电路各处的电压是相等的，高的电压端会向低的电压端流入。这种方法也是很多电池经销商在检测完全没有电的电池所使用的方法。然后进行充电也可以达到充电的目的。这个原理跟到，串联一个电池，原理差不多。也是将整组的电压提升上去。

三、低压充电法。选用小一型号的充电器进行充电。比如说是一组60V-20AH的电池，那么我们是用48V-20AH的充电器进行充电。这样大部分的情况下，也是可以充进去的。原理也是类似于第一种，将充电电压与电池的两端电压更接近。

四、单块电池充电法。将单块电池用12伏的摩托车充电器进行充电，可以将电池激活，但这种充电比较慢，一般要充7个小时以上，电池电压才会缓慢回升到12V左右。如果全部单块充很耗时间。

五、特殊充电器法。天能充电器它是自动识别电池电压的，不管一组电池电压有多少伏，都可以自动识别电压，他都可以充电进去。比如原车是60V-20AH的电池，现在只有30V不到，它照样可以往里面充电的。随着电压的升高，又全适应更高一阶的电压，再给电池充电。台铃、绿佳电动车、金彭三轮车配套过这个品牌的充电器。

另外普及下锂电池“饿死了”怎么激活？笔记本电池或者手机电池

电池激活在联想电源管理软件上面叫做“电源标尺校准”。在PC端用Everest检测电源的时候，有一个“设计容量”，底下紧跟着“完全充电容量”，如果两项的数值相同，则会看到再下边的“电池损耗"项为0%；一般来说刚刚出厂的或者长时间放置未及时保养的电池”完全充电容量“会小于”设计容量“，此时就会看到电池损耗是1%。也就意味着电池没有“完全充满”，我们需要进行“完全充放电”（完全放电之后不间断充12小时至以上）益完全“开发”电池的“潜能”。这个完全充放电的过程即称为“激活电池”，联想Thinkpad等的电源管理软件有一个“电源标尺校准”功能原理类似。

个人觉得一些老科技的电池比如NiMH需要激活。锂电池理论是需要激化因为需要在负极形成一层SEI的保护层。但是这个过程实际上已经在生产测试阶段已经完成啦。个人觉得消费者对电池的误区造成有这样的服务。

你的手机电池“饿”死了，开不了机充不进电，这时需要激活！首先所谓饿死就是电池一直没电或者电量很低时导致的电池无法再充电的现象。然后所谓激活目前有两个办法:一是使用万能充充个20分钟左右就可以激活。二是给手机维修店有较为专业的电压稍微高点的比如12伏的电源来激活，具体就是把电源正负极放在电池正负极几十秒甚至几分钟给它通通电，打通它！最后，激活后就可以和原来一样用直充充电了，会不会对寿命有明显影响还不知道。

用仪器充电。（如果上述方式不行，电池也无故障，就需要用‘稳压电源‘激活，黑色的线连电池负极，红色的连电池正极，充电电压达到3.8V，即可）使用锂电池的装置，第一次使用不用充电12小时，这是没必要的！

How to activate the "starved" lithium battery?

Many people have bad habits. They often leave the batteries of electric vehicles at home without turning off the air switch, and do not ride for several months. A few months later, when I came back to ride, I found that the car had no power and could not be charged. When the charger is plugged in, the light is always green, even if it is plugged in for 24 hours, because the battery voltage is too low and the difference between the output voltage of the charger and the battery voltage is too large, the charger cannot flush electricity into the battery.

This is what we usually call the "starving" of the battery. The voltage of this kind of battery block battery is generally only about 5.6V, not more than 6V. For such batteries, most of them are replaced. However, it is a pity to replace a group of batteries for hundreds of times, especially batteries that have just passed the warranty.

Here are five better ways to save most of these "starving" batteries. Note that most of them are not 100%.

1、 Tandem method. A 12 volt battery with normal voltage is connected in series with the whole battery. For example, if the original vehicle is a 48V-20AH battery, we will connect another 12V-20AH battery in series. A fully charged 12V battery has a voltage of about 13V. After being connected in series, the voltage of the whole battery can be increased, and then the battery can be charged with its original charger. In this way, the battery can be charged. After the charger is plugged in, the charger is red. At this time, the battery can be charged. When the charger turns green, remove the battery connected in series. Then charge it normally.

2、 Parallel connection method. This method is a little more trouble. For example, the vehicle was originally a 48V-20AH battery, and we connected another set of 48V-20AH batteries in parallel. It is known that the voltage in parallel circuit is equal everywhere, and the high voltage terminal will flow into the low voltage terminal. 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. The principle is similar to that of a battery connected in series. It also increases the voltage of the whole group.

3、 Low voltage charging method. Use a smaller charger for charging. For example, for a group of 60V-20AH batteries, we use a 48V-20AH charger for charging. In most cases, it can also be filled in. The principle is similar to the first one. The charging voltage is closer to the voltage at both ends of the battery.

4、 Single battery charging method. Charging a single battery with a 12V motorcycle charger can activate the battery, but this charging is relatively slow. Generally, it takes more than 7 hours to charge, and the battery voltage will slowly rise to about 12V. If it takes a long time to charge all the single modules.

5、 Special charger method. The Tianneng Charger can automatically identify the battery voltage. No matter how much voltage a group of batteries has, it can automatically identify the voltage and charge it. For example, the original car has a 60V-20AH battery, but now it has less than 30V, so it can still charge it. With the increase of voltage, the battery will be fully adapted to the higher voltage and then charged. Tailing, Lujia Electric Vehicle and Jinpeng Tricycle have been equipped with chargers of this brand.

In addition, how to activate the "starved" lithium battery when popularized? Laptop battery or mobile phone battery

Battery activation is called "power ruler calibration" on Lenovo power management software. When Everest is used to detect the power supply on the PC, there is a "design capacity" followed by "full charging capacity". If the two values are the same, Then 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 been placed for a long time without timely maintenance will be less than the "design capacity". At this time, you will see that the battery loss is 1%. That means the battery is not "fully charged", and we need to "fully charge and discharge" (charging for 12 hours or more after full discharge) to fully "develop" the "potential" of the battery 。 This complete charging and discharging process is called "activating the battery". Lenovo Thinkpad and other power management software have a "power ruler calibration" function similar in principle.

Personally, I think some old technology batteries, such as NiMH, need to be activated. Lithium battery theory requires intensification because a protective layer of SEI needs to be formed on the negative electrode. But this process has actually been completed in the production test phase. Personally, I think consumers' misconceptions about batteries cause such services.

The battery of your mobile phone is "hungry" and cannot be charged when the phone is turned on, so it needs to be activated! First of all, the so-called starvation is the phenomenon that the battery cannot be recharged when the battery has been out of power or the power is very low. Then there are two ways to activate. First, you can activate it after 20 minutes of universal charging. Second, the mobile phone repair shop has a professional power supply with a slightly higher voltage, such as a 12 volt power supply, to activate it. Specifically, place the positive and negative poles of the power supply on the positive and negative poles of the battery for tens of seconds or even minutes to power it up and get it through! Finally, after activation, you can use direct charging as before. Whether it will have a significant impact on the service life is still unknown.

Charge with the instrument. (If the above methods are not effective and the battery is free of failure, you need to use a 'regulated power supply' to activate it. The black line is connected to the battery cathode, and the red line is connected to the battery cathode. The charging voltage reaches 3.8V.) It is unnecessary to use the device with lithium battery for the first time without charging for 12 hours!