The ASOL 18650-2S 7.4V 3500mAh Li-ion battery pack is designed for OEM projects that need a compact two-cell cylindrical battery platform with stable voltage, practical energy density and configurable output wiring.
The finished pack size is approximately T19 x W37 x L67mm. It is suitable for equipment spaces where a slim 7.4V rechargeable pack is required, with connector, wire, label and protection circuit options available for production projects.
Technical Specifications
| Parameter | Value |
|---|---|
| Battery Model | 18650-2S |
| Cell Size | T18 x L65mm |
| Finished Product Dimensions | T19 x W37 x L67mm |
| Nominal Capacity | 3500mAh |
| Nominal Voltage | 7.4V |
| Charging Voltage | 8.4V |
| Charging Current | 3.5A |
| Discharge Current | 10A |
| Charging Temperature | 0-45°C |
| Discharge Temperature | -20-60°C |
| Customization | Connector, wire length, polarity, PCM/BMS, label and packaging options |
Product Advantages
Compact 7.4V pack for OEM devices
Two 18650 cells in series provide 7.4V nominal voltage and 8.4V full-charge voltage.
Suitable for devices that need stronger working current than a small single-cell pack.
T19 x W37 x L67mm finished dimensions fit handheld and embedded equipment spaces.
Wire leads, connector type, PCM/BMS, insulation, polarity and label can be configured.
Applications
Common equipment using 18650-2S packs
Stable 7.4V rechargeable power for handheld scanning devices.
Compact pack option for mobile payment and smart terminal products.
Custom wiring and protection options for compact medical equipment projects.
Useful for meters and tools that need a 2S Li-ion battery platform.
Supports compact backup power designs with custom connector and PCM options.
Suitable for lighting products that need 7.4V output and slim battery packaging.
Electrical And Mechanical Notes
This pack is designed around a standard 2S Li-ion charging profile. The recommended charging voltage is 8.4V. Operating temperature range is 0-45°C for charging and -20-60°C for discharge.
For production orders, ASOL can match the PCM/BMS protection limits to your device load, charger design and connector requirements. Cable exit direction, connector model, lead length, insulation method and label information can be confirmed against your device drawing or physical sample.
Customization Options
- Connector matching for JST, Molex, DC plug, bare wire or customer-specified terminals.
- Wire length, polarity, cable exit direction, insulation sleeve and label customization.
- PCM/BMS selection for over-charge, over-discharge, over-current and short-circuit protection.
- Outer wrapping, barcode label, warning label and customer part-number label support.
- Sample confirmation before bulk production for fit, runtime and charging compatibility.
Ordering Information
To quote this 7.4V 3500mAh 18650-2S battery pack accurately, please send the required quantity, connector model or photo, wire length, maximum working current, charging method and available battery space. If you already have an old battery pack or device sample, photos of the label, connector and installation position will help us confirm the replacement design faster.
Frequently Asked Questions
Can this 18650-2S pack be customized with my connector?
Yes. ASOL can match JST, Molex, DC plug, bare wire or customer-specified terminals. Please provide connector photos, pin spacing, polarity and wire length requirements.
Is this battery pack suitable for 8.4V chargers?
Yes. This is a 2S Li-ion battery pack with 7.4V nominal voltage and 8.4V full-charge voltage. The charger must be designed for 2S lithium-ion batteries.
Can ASOL adjust the protection circuit for my device?
Yes. Protection current, connector wiring and PCM/BMS selection can be reviewed according to the device load, peak current and charging method.
Can I order samples before mass production?
Yes. Sample production is recommended before bulk orders so the dimension, connector, polarity, runtime and charging compatibility can be confirmed.
What information is needed for quotation?
Please send target quantity, application, working current, connector type, wire length, battery compartment size, label requirement and any certification or shipping documentation needs.
Contact
| info@asolbattery.com | |
| +86 157 7985 8703 | |
| Website | www.asolbattery.com |
| Response Time | Within 24 hours on working days |
Sample lead time: 3-7 business days after details are confirmed
Bulk production: 10-20 business days depending on order quantity and material readiness
Need a custom 7.4V 18650 pack?
Send us your target dimensions, connector type, working current and quantity. ASOL can support sample builds, wire harness matching, PCM/BMS selection, label customization and batch production.
Need another cylindrical pack? Explore ASOL cylindrical battery pack options or send your project details for a custom recommendation.
