Precautions for using polymer lithium-ion batteries
I. Precautions for handling battery cells
Because the battery cells are in flexible packaging, they must be handled with care to ensure that their performance is not damaged.
1. Aluminum foil packaging materials
Aluminum foil packaging materials are easily punctured by sharp parts, such as nickel sheets and needles.
Do not use sharp parts to impact the battery.
The work environment should be kept clean and free of sharp parts.
Do not puncture the battery with nails or other sharp objects.
Batteries must not be transported or stored together with metal objects, such as necklaces or hairpins.
2. Top edge sealing
The top edge is very easily damaged.
Bending the top edge is prohibited
3. Folding the edges
The edge folding was completed during the battery production process and passed the sealing test.
Do not open or damage the folded edge.
4. Electrode
The mechanical strength of the tabs is not exceptionally strong, especially the aluminum sheet.
Do not bend the tabs
5. Mechanical impact
Do not drop, impact, or bend the battery cells.
Do not strike or step on the battery with a hammer.
Do not strike or throw the battery.
6. Short circuit
Short-circuiting the battery cell is strictly prohibited at all times, as it will cause serious damage to the cell.
Do not use metal objects such as wires to short-circuit the positive and negative terminals of the battery.
II. Standard Testing Environment for Polymer Lithium-ion Batteries
Ambient temperature: 20±5℃
Relative humidity: 45–85%
The batteries must be fully discharged before testing.
III. Precautions for charging and discharging polymer lithium-ion batteries
1. Charging
The charging current and charging voltage must not exceed the following standards. Exceeding the specified values may damage the charging and discharging performance, mechanical properties and safety of the battery cell, and may even lead to overheating and leakage.
The battery charger must be able to charge at a constant current and constant voltage.
The charging current of a single battery cell must be below 1C5A during charging;
The charging temperature range is 0 to +45℃;
The voltage during charging must not exceed 4.23V.
2. Discharge
The discharge current must not exceed the following standards, and discharge must be carried out within the range of these standards.
The discharge current of a single battery cell must be less than 2C5A;
The discharge temperature range is -20 to +60℃;
The discharge termination voltage of a single battery cell is not less than 2.75V.
