ANSMANN Li‑Ion Akkupack 2S1P 2×18650 7.4V 3500mAh with Cable and Protection Circuit

ANSMANN Li‑Ion Akkupack 2S1P 2×18650 7.4V 3500mAh with Cable and Protection Circuit is a rechargeable lithium‑ion battery pack configured as two cells in series to provide a nominal 7.4 V output and a rated capacity of 3500 mAh. The pack is delivered with a pre‑fitted connection cable and an integrated protection circuit that guards against overcharge, overdischarge and short circuits, making it suitable for a wide range of portable electronic devices and DIY applications requiring a compact, rechargeable 7.4 V power source.

Advantages

The battery pack combines high energy density of 18650 lithium‑ion cells with a compact 2S1P layout to deliver consistent voltage and usable capacity. The integrated protection circuit adds safety by monitoring cell voltages and interrupting current in unsafe conditions. A fitted cable simplifies installation in projects and devices without needing additional wiring or holders. The rechargeable design reduces the need for disposable batteries, while the nominal 7.4 V output matches many small electronics and DIY systems.

Suitable for

• Portable electronics and hobby devices that require a 7.4 V rechargeable source
• DIY projects, robotics and model making
• Cordless small tools and inspection lights with matching voltage
• Backup power for sensors, small controllers and communication modules

When it may not be suitable

This pack is not intended for high‑current heavy duty power tools or applications that demand continuous currents beyond typical 18650 cell limits; suitability depends on the discharge rating of the internal cells. It may also be unsuitable where a different nominal voltage, higher capacity, or a physically different form factor is required. For installations exposed to extreme temperature, moisture, or mechanical stress additional protection or an alternative battery type may be needed.

Key specifications

• Cell configuration: 2 cells in series (2S1P)
• Nominal voltage: 7.4 V
• Rated capacity: 3500 mAh
• Cell type: 18650 lithium‑ion cells
• Protection: integrated circuit providing overcharge, overdischarge and short‑circuit protection
• Connection: pre‑fitted cable for easy integration
• Intended use: rechargeable power source for portable electronics and small devices

How to use

Install the pack in the device or project ensuring correct polarity and secure mechanical fixation. Use a compatible charger designed for 2‑cell lithium‑ion packs or a charger specified for the pack voltage and cell chemistry; follow the charger manufacturer’s instructions. Avoid charging with unsuitable chargers, and do not bypass the protection circuit. Observe standard safety precautions for lithium‑ion batteries: charge in a well‑ventilated area, keep away from heat sources, and do not puncture or crush the pack.

What to consider before purchase

• Ensure the nominal voltage (7.4 V) and capacity (3500 mAh) match your device requirements
• Verify the discharge current capability of the pack is adequate for your load
• Confirm the physical size and cable connector suit your installation space
• Assess environmental conditions (temperature, humidity, vibration) where the pack will be used

Usage recommendations

For safe, long service life charge and store the pack using chargers and procedures appropriate for lithium‑ion cells, avoid deep discharges, and replace the pack if you notice swelling, visible damage, or performance degradation. When integrating into equipment, include secure mounting and strain relief for the cable to prevent mechanical damage and accidental short circuits.