Cylindrical 18650 3.7V 2600mah Li-ion Battery (A-grade cell)
Cylindrical 18650 3.7V 2600mah Li-ion Battery (A-grade cell)

Cylindrical 18650 3.7V 2600mah Li-ion Battery (A-grade cell)

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Battery Specification
Model 18650 Capacity 2600 mAh
Nominal Voltage 3.7 V Maximum Charge Voltage 4.2 V
Internal Resistance <30 mΩ Typical Cell Weight 41.8 g
Cell Dimensions (T×W×L) Ø18 mm × 65 mm (L)
Finished Pack Dimensions (with PCM & Wires) Note: Final dimensions may vary depending on PCM placement, wire routing, connector type, or custom installation requirements.
Connector Molex/JST/Customized
Sample Samples available | If in stock: 5–7 working days preparation; if not in stock: approximately 12 working days preparation. Stock status subject to confirmation.
Shipping Time Small quantities / Lightweight shipments:DHL: approximately 3-5 working days | Battery Shipping Line: approximately 10–12 working days to most cities Large quantities / Heavy shipments:Battery Shipping Line : approximately 10–12 working days | Sea freight: approximately 35 working days.
Charge Temperature 0℃ to 45℃
Discharge Temperature -20℃ to 60℃ Recommended Storage Temperature Recommended storage temperature: Room temperature (15–35°C) Storage temperature range: -20–45°C (short-term)
Cycle Life / Capacity Retention 100 cycles ≥92%
300 cycles ≥88%
500 cycles ≥80%
Certifications & Documents Many battery models available through datapowerbattery.com are supported by certifications and compliance documents such as CE, RoHS, KC, PSE, FCC, UN38.3, MSDS, UL, CB and BIS. Certification availability varies by model. Please contact us to confirm the certificates and documents available for a specific battery model.
Model18650
Capacity2600 mAh
Nominal Voltage3.7 V
Internal Resistance<30 mΩ
Typical Cell Weight 41.8 g
Maximum Charge Voltage4.2 V
Cell Dimensions (T×W×L)Ø18 mm × 65 mm (L)
Finished Pack Dimensions (with PCM & Wires)Note: Final dimensions may vary depending on PCM placement, wire routing, connector type, or custom installation requirements.
ConnectorMolex/JST/Customized
SampleSamples available | If in stock: 5–7 working days preparation; if not in stock: approximately 12 working days preparation. Stock status subject to confirmation.
Shipping TimeSmall quantities / Lightweight shipments:DHL: approximately 3-5 working days | Battery Shipping Line: approximately 10–12 working days to most cities Large quantities / Heavy shipments:Battery Shipping Line : approximately 10–12 working days | Sea freight: approximately 35 working days.
Charge Temperature0℃ to 45℃
Discharge Temperature-20℃ to 60℃
Recommended Storage TemperatureRecommended storage temperature: Room temperature (15–35°C) Storage temperature range: -20–45°C (short-term)
Cycle Life / Capacity Retention100 cycles ≥92%
300 cycles ≥88%
500 cycles ≥80%
Certifications & DocumentsMany battery models available through datapowerbattery.com are supported by certifications and compliance documents such as CE, RoHS, KC, PSE, FCC, UN38.3, MSDS, UL, CB and BIS. Certification availability varies by model. Please contact us to confirm the certificates and documents available for a specific battery model.
Electrical & Protection Specifications
Electrical values shown below are typical reference values for preliminary selection. Protection options are configurable; final thresholds, current capability and PCM/BMS are confirmed according to the actual cell and application requirements.
Standard Charge Current 0.2C (0.52A) Standard Discharge Current 0.2C (0.52A)
Maximum Continuous Charge Current 0.5C (1.3A) Maximum Continuous Discharge Current 0.5C (1.3A)
Discharge Cut-off Voltage 2.75 V Energy 9.62 Wh
Cell Configuration 1S1P
NTC Thermistor NO / Optional C-rate 1.0C
Self-Discharge Rate ≤ 3%/month (at 25°C) Short-Circuit Protection Yes
Over-discharge Protection Options Typical configurable options: 2.5V / 2.7V / 2.8V / 3.0V. Delay and release voltage depend on the selected PCM. Final settings can be matched to the application. Overcharge Protection Options Typical configurable options for standard 3.7V Li-ion/LiPo cells: 4.25V / 4.28V / 4.30V. Final threshold and release voltage depend on the selected PCM and cell requirements.
Overcurrent Protection Options Multiple PCM/BMS options are available (e.g., 0.2A / 0.5A / 1A / 2.5A / 5A / 7A / 9A, with higher-current solutions available for suitable battery packs). OCP threshold and delay depend on the selected protection circuit. Our engineers will match the PCM/BMS to the required continuous current, peak current and application requirements.
Standard Charge Current0.2C (0.52A)
Standard Discharge Current0.2C (0.52A)
Maximum Continuous Charge Current0.5C (1.3A)
Maximum Continuous Discharge Current0.5C (1.3A)
Discharge Cut-off Voltage2.75 V
Energy9.62 Wh
Cell Configuration1S1P
NTC ThermistorNO / Optional
C-rate1.0C
Self-Discharge Rate≤ 3%/month (at 25°C)
Short-Circuit ProtectionYes
Over-discharge Protection OptionsTypical configurable options: 2.5V / 2.7V / 2.8V / 3.0V. Delay and release voltage depend on the selected PCM. Final settings can be matched to the application.
Overcharge Protection OptionsTypical configurable options for standard 3.7V Li-ion/LiPo cells: 4.25V / 4.28V / 4.30V. Final threshold and release voltage depend on the selected PCM and cell requirements.
Overcurrent Protection OptionsMultiple PCM/BMS options are available (e.g., 0.2A / 0.5A / 1A / 2.5A / 5A / 7A / 9A, with higher-current solutions available for suitable battery packs). OCP threshold and delay depend on the selected protection circuit. Our engineers will match the PCM/BMS to the required continuous current, peak current and application requirements.
Cylindrical 18650 3.7V 2600mah Li-ion Battery (A-grade cell)