Hunan Yideng is a reliable supplier of high-quality cylindrical lithium polymer batteries. Our mainstream 75500 3.7V 220mAh Small Cylindrical Lithium Ion Rechargeable Batteries adopt mature production lines to guarantee consistent performance, which gains great recognition in the market. We sell goods directly to purchasers without middlemen, so our quotation is quite competitive.
Besides bare cells in stock, we provide supporting assembly service to fit different internal structure of electronic devices. This cell delivers high energy efficiency, low self-discharge rate and stable cycle performance, easy to install and use. Full sets of test documents are prepared for global export.
Bulk purchase is supported for domestic and overseas clients, and flexible MOQ is negotiable. OEM service is open for partners with independent brands. It fits small Bluetooth gadgets, health detectors, wireless earphones and other devices. We stick to strict outgoing quality control with stable supply and on-time delivery, and wish to build long-term cooperation with global importers and hardware solution providers.
| Item | Specification |
| Model | 75500 |
| Material | Li-ion Polymer Battery |
| Normal Capacity (0.2C) | 220mAh |
| Minimum Capacity (0.2C) | 220mAh |
| Energy | 0.814Wh |
| Normal Voltage | 3.7V |
| Delivery Voltage | 3.85V ~ 4.05V |
| Standard Charge Method | Charge at maximum current. When the battery or pack terminal voltage reaches the charging limit voltage, charge at constant voltage until the charging current is less than or equal to 0.02 C, then stop charging. |
| Discharge Program | The battery or the battery pack carries on the constant current discharge with the maximum discharge current to the discharge termination voltage. |
| Max Charging Current | 1C CC/CV → 0.02C cutoff |
| Max Discharging Current | 1C CC/CV → 3.0V cutoff |
| Over-Discharging Current | 3.0V |
| Operation Temperature Range |
Charging: 0°C ~ 50°C Discharging: -20°C ~ 60°C |
| Allowable Maximum Surface Temperature |
Charging: Tmax ≤ 50°C Discharging: Tmax ≤ 60°C |
| Storage T/H Range (time) |
-20°C ~ 60°C (Less than 1 month) -20°C ~ 45°C (Less than 3 months) -20°C ~ 25°C (Less than 1 year) |
| Cycle Life |
≥ 300 times (Thickness expansion rate ≤ 10%) ≥ 500 times (Thickness expansion rate ≤ 12%) |
For small electronic devices, battery selection often requires a balance between physical size, runtime and production flexibility.
The 75500 cell is designed to provide:
With 220mAh capacity, the battery supports longer working periods compared with lower-capacity miniature cells while maintaining a compact footprint.
The cell provides consistent voltage output and low self-discharge characteristics, helping portable devices maintain reliable operation during daily use.
The battery can be supplied with customized PCM protection, wire harnesses and connectors, allowing easier integration into different electronic structures.
We ship lithium batteries with UN3480 standard packaging following dangerous goods transport rules. Multiple shipping choices are available. DHL express takes 4 – 6 working days door to door. The DDP service needs 12 – 15 working days. We support DHL, FedEx, UPS, EMS and other couriers. We will match proper transport solutions based on your budget and delivery timeline.
· Avoid insolation or dropping into fire.
· Avoid shorting the battery.
· Avoid excessive physical shock or vibration.
· Don't disassemble or deform the battery.
· Don't immerse in water.
· Don't use the battery mixed with other model or manufacturer batteries.
· Battery usage by children should be supervised.
The period of warranty is one year from the date of shipment. Within the battery idle for at least three months to charge the battery activation time, because if the idle time is too long and that the battery performance of the company is not responsible for any damage, Yideng guarantees to give a replacement in case of battery with defects proven due to manufacturing process instead of the customers abuse and misuse.
Place the fully charged battery in a controllable chamber of 20°C ± 5°C as:
a. Increase the temperature of the test chamber to 72°C ± 2°C and keep it for 6 hours;
b. Reduce the temperature of the test box to -40°C ± 2°C, and keep it for 6 hours;
c. Repeat steps a ~ b for 10 times;
d. The samples were kept at room temperature at 20°C ± 5°C for at least 6 hours.
The transition time between each two temperatures during the test shall not be greater than 30 minutes.
A1: MOQ depends on order quantity, customization requirements and production conditions. Yideng supports sample orders and small-batch testing before mass production.
A2: The 75500 battery provides higher capacity while maintaining a compact cylindrical structure, making it suitable for devices requiring longer runtime without using larger battery formats.
A3: Yes. Yideng provides customized processing including PCM installation, wire assembly and connector customization according to customer requirements.
A4: Yes. The compact design and stable performance make them suitable for smart wearables, wireless devices and other portable electronic products.
A5: Yes. Yideng supports sample evaluation before confirming large-volume orders to help customers verify battery performance.
A6: Yideng can provide relevant compliance documents including UN38.3, RoHS and other certification materials according to customer market requirements.
Address
Xin'an Village industrial Park, Yonglejiang Town, AnrenCounty, Chenzhou City, Hunan Province, China
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