Battery pack ANSMANN Li‑Ion 2S2P (4×18650) 7.2 V 5100 mAh with cable

Rechargeable ANSMANN Li‑Ion 2S2P battery pack assembled from four 18650 cells to provide a nominal 7.2 V and a usable capacity of 5100 mAh. The pack is delivered with a pre‑attached connection cable to simplify installation in portable equipment. Its compact rectangular shape and moderate energy density make it suitable where stable voltage and predictable runtime are required.

Advantages

The ANSMANN Li‑Ion 2S2P battery pack offers a balance of voltage and capacity in a compact form factor and benefits from the higher energy density and lower self‑discharge of lithium‑ion chemistry. Supplied cable enables quick integration without soldering, and the 2S2P arrangement helps maintain usable voltage under moderate loads while extending runtime compared to a single‑string configuration.

Suitable for

• Cordless tools with moderate current draw
• Portable medical devices and monitoring equipment
• Instrumentation and test equipment
• DIY electronics projects and custom housings
• Battery replacement in compatible consumer devices requiring 7.2 V

When it may not be suitable

This pack is not intended for applications that require very high continuous discharge currents beyond typical 18650 cell ratings; for high‑power tools or motor drives a pack with cells rated for higher continuous current or a different configuration may be needed. It is also not a drop‑in solution for devices that require an integrated battery management system with specific communication interfaces unless an external management circuit is provided.

Key specifications

• Cell format: 18650 lithium‑ion (4 cells in 2S2P configuration)
• Nominal voltage: 7.2 V
• Capacity: 5100 mAh (nominal)
• Output: pre‑attached connection cable for integration
• Chemistry: lithium‑ion
• Typical form factor: compact pack suitable for enclosed housings

How to use

Connect the supplied cable to the device’s battery connector or to a compatible battery holder ensuring correct polarity. Use a charger designed for 2‑cell lithium‑ion packs and follow the charger manufacturer’s instructions. Avoid charging with unapproved chargers and ensure the pack is at an appropriate temperature before charging. For installations that need cell balancing or advanced protection, integrate a separate battery management or protection circuit as required by the device.

What to consider before purchase

• Verify the physical dimensions and cable connector compatibility with your device.
• Confirm the device’s acceptable voltage range and current draw against the pack’s nominal voltage and typical cell discharge capability.
• Check whether additional protection electronics or a charger for 2‑cell Li‑Ion packs are needed.
• Ensure safe handling and storage conditions suitable for lithium‑ion batteries.

Usage recommendations

Use a dedicated 2‑cell Li‑Ion charger and monitor charging in a fire‑safe environment. Store the pack at moderate charge (around 40–60%) if not used long‑term, avoid exposure to high temperatures, and replace the pack if you detect swelling, excessive heat, or capacity loss beyond expected levels.