Conditions of use of lithium batteries
When using lithium batteries for electric forklifts, the high temperature of the working environment should not exceed 60° and the low temperature should not be lower than -5° if these two extreme working conditions. are exceeded, the battery must be manufactured in a non-standard manner. Note: Lithium batteries can be used in cold storage for UC for more than 1 hour (above -20°) , but cannot be placed or charged in cold storage
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Do not over-discharge
Stop using the battery when the battery level battery is below the alarm level. The battery will fail and cannot be used. The manufacturer has to send someone to repair it. No battery should be over-discharged, otherwise it will damage the battery.
< p>If it should not be storedfor a long period. time, the battery should not be fully charged and should be stored at 70%.Storing the battery with a full battery will damage the battery core. Typically, 50% to 70% of the energy is stored.
Lithium iron phosphate batteries do not explode
Electric forklifts use lithium iron phosphate batteries, which are safer than ternary lithium batteries
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Lithium batteries will only burn under extreme working conditions such as short circuit, strong extrusion and collision, high temperature (lithium iron phosphate will burn slowly and will not explode in an accident)
Storage environment
1) The battery system should be stored in an environment clean, dry and ventilated interior with an ambient temperature of 20 ± 5° and a relative temperature not exceeding 75%.
2) Contact with peopleCorrosive objects should be avoided and should be kept at least 2M away from heat sources and protected against moisture and humidity.
3) The positive and negative terminals of the battery must not fall into any metal or other conductive foreign object.
4) The battery must be protected from mechanical shock and high pressure.
Lenovo A668t cannot be charged after replacing it with a Biliton A520-BLT battery. The nominal voltage is written there. is 3.7V. Rated capacity: 1100mAh Charging limit voltage 4.2
Lithium battery assembly is the assembly and sales service of finished parts. Generally, individual lithium battery assembly does not require a safety license. The lithium battery non-standard product market is expected to provide services related to environmental protection, health and fire safety.
Once the lithium battery cell isIf overcharged to a voltage higher than 4.2 V, it will begin to produce side effects. The higher the overload voltage, the higher the risk. Once the lithium battery cell voltage is higher than 4.2V, the number of lithium atoms remaining in the positive electrode material is less than half. At this time, the memory cells often collapse, causing the battery capacity to permanently decrease.
If charging continues, since the storage compartment of the negative electrode has been filled with lithium atoms, subsequent lithium metal will accumulate on the surface of the negative electrode material. These lithium atoms will grow dendrites from the surface of the negative electrode towards the lithium ions.
These lithium metal crystals will pass through the separator paper and short-circuit the positive and negative electrodes. Sometimes the battery explodes before qa short circuit does not occur. This is because during the overcharging process, the electrolyte and other materials crack and produce gas, causing the battery shell or pressure valve to swell and rupture, allowing oxygen to escape. enter and react with lithium. the atoms accumulated on the surface of the negative electrode then explode.
Detailed information:
1. Carbon anode material The negative electrode materials actually used in lithium-ion batteries are mainly carbon materials, such as artificial graphite, natural graphite, mesophase carbon microspheres, petroleum coke, carbon fiber, pyrolytic resin carbon, etc.
2. Tin-based negative electrode materials
Tin-based negative electrode materialsain can be divided into two types: tin oxide and tin-based composite oxide. Oxides refer to oxides of metallic tin in various valence states. There are no commercial products.
3. Nitride
There is no commercial product.
4. Alloys
Including tin-based alloys, silicon-based alloys, germanium-based alloys, aluminum-based alloys, antimony-based alloys, alloys based on magnesium and other alloys. , which are not marketed products.
5. At the nanoscale
Carbon nanotubes and nanoalloy materials.
Baidu Encyclopedia-Lithium Battery
Hello.
According to the situation you described, the standard lithium battery model of the Lenovo A668t device is BL186 with a capacity of 1500 mAh. Due to the use of non-standard batteries, the mobile phone circuit cannot becharge. and the safety of electricity cannot be guaranteed. This may damage the cell phone. Therefore, if you mentioned that it cannot be charged, it is recommended to replace the original battery and observe its usage. If you are still unable to charge after replacing the original battery, we recommend the following troubleshooting attempts:
1. It is recommended to plug and unplug the data cable and power adapter to eliminate the problem. poor contact problem;
2. It is recommended to try to replace the charging data cable and power adapter if possible. If the improvement can be improved after replacement, an anomaly can be inferred. accessories is caused;
If the problem still cannot be resolved effectively, in order to use normally in the future, it is recommended that you take the time to visitvisit a nearby Lenovo authorized repair station for detailed inspection and treatment.
Request for authorized repair site on official website: http://support1.lenovo.com.cn/lenovo/wsi/station/servicestation
You are welcome to contact us at any time or visit Lenovo Lewen Please visit (http://ask.lenovomobile.com) for consultation.