What is the discharge voltage of lithium battery?

General lithium battery working voltage is 3.7 V, and termination voltage is 3.2V. Iron phosphate lithium battery working voltage is 3.26 V, and termination voltage is 2.5 V.

The lithium battery is a kind of anode materials for lithium metal or lithium alloy, using non-aqueous electrolyte solution of a battery, and rechargeable battery lithium ion batteries with lithium ion polymer battery. It is not the same. The inventor of the lithium battery is Edison. Due to the lithium chemistry is very lively, making lithium metal processing, storage, use, very high demand on the environment. So, the lithium battery has not been applied for a long time.

Lithium-ion batteries are usually divided into two categories:

Lithium battery: the lithium battery is generally use lithium manganese dioxide as positive pole material, metal or its alloy metal anode materials for batteries, the use of water electrolyte solution.

Lithium ion battery: the lithium ion battery is generally use lithium alloy metal oxide anode material, graphite as the cathode material, using non-aqueous electrolyte battery.

The cause of the lithium battery explosion:

1. The internal polarization is bigger.

2. Sheet bibulous, react with the electrolyte gas drum.

3. The electrolyte itself, the quality of the performance problems.

4. When liquid injection fluid quantity cannot meet the technical requirements.

5. Install preparation process of laser welding sealing performance is poor, leak, when measuring air leak test.

6. Dust, a piece of dust can cause micro short circuit in the first place.

7. Is a process from the cathode partial thickness range, into the shell.

8. Filler sealing problem, steel ball seal performance is not good cause gas drum.

9. Shell material exists partial shell wall thickness, thickness of shell deformation effects

1, (including battery, lithium-ion batteries and other rechargeable batteries) discharge voltage to 0.9 times the rated voltage, discharge is considered complete. Although there are "SOC", but cannot continue to use, otherwise it will damage the battery.

2 a full battery, voltage, the industry is known as "termination of charging voltage. According to the battery industry standard, the voltage is about 1.2 times of the rated voltage value. Such as 3.6 V battery, and termination of charging voltage is from 4.2 V to 4.3 V.

3, (including battery, lithium-ion batteries and other rechargeable batteries) has two taboo:

(1), excessive charge;

(2), excessive discharge. So high quality electrical equipment (such as mobile phone, laptop, etc.) are designed with the power management module, can control the charging and discharging voltage value, in order to prevent damage to the battery.

4, homemade charging circuit, be sure to have a termination of charging voltage control, otherwise it will hurt the battery. Note that the battery, will be subject to voltage, has nothing to do with the remaining power.

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How much voltage does lithium battery discharging termination have? Cell phone lithium battery discharging termination voltage basically is about 3.3, while internal lithium battery protection board discharge voltage protection settings are basically 2.5v. The lithium battery discharging termination voltage setting is very appropriate, in accordance with the protective plate termination voltage 2.5 doesn't affect the performance of lithium battery capacity, and will not damage the lithium battery.

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