How to fix lithium battery

Lithium battery applications has been very popular now, how can save costs, so that "dead" lithium battery back to life, and to share what I came to experience
Lithium generally divided into three cases of suspended animation
First, the battery is simply recharged into electricity, chargers, appliances are not recognized, there is no voltage electrode.
Second. Can charge, charger, electrical appliances can identify, but only adhere to a few minutes and runs out quickly.
Third, they can charge, and the capacity is still relatively plentiful, but the large current discharge voltage drops significantly (specific performance such as: Using the camera's shooting mode can only insist on a few minutes, and go back to look at the pattern can persist for a long time)


Battery seems to be "dead", but also has a great probability can save. I summed up method is: equal to the battery voltage direct current design to charge the battery.

This "death" to the battery, with the original charger is recharged into electricity (current did not pass), but using a DC voltage equal to the battery designed to charge the battery will be found to have a relatively large current, and this charge current will gradually decrease after a few minutes close to 0, which is a good news: the battery voltage is restored to the design level.
It's time to stop charging, then the multimeter to measure the battery terminals, is not there a normal voltage
Then, you can use the original charger to charge.
In this way, I fix a lot of battery, Moreover, many can be restored to the level of around half of the design capacity.

In order to completely activate the battery, also need to complete charge and discharge times. Discharge circuit composed of a resistor and a light emitting diode, light emitting diode through the discharge state estimation.
In my experience, this kind of approach for the first battery, very effective. While the latter two cases the battery, it is difficult to repair, to find information on the Internet, there was little apparent effect. Especially the third, "can be charged, and the capacity is relatively plentiful, but the large current discharge voltage drops significantly (specific performance such as: Using the camera's shooting mode can only insist on a few minutes, and go back to look at the pattern can persist for a long time)" This kinds of batteries, discard it is a pity.