Replacement battery Newell TF18650-2200-1S3PA for Marshall devices, 18650 Li-ion 2200 mAh pack

Replacement battery Newell TF18650-2200-1S3PA for Marshall devices, 18650 Li-ion 2200 mAh pack is a compatible internal battery pack designed to restore runtime of portable Marshall audio equipment that originally uses 18650 cells. The pack employs lithium-ion 18650 cells with a nominal capacity of 2200 mAh arranged in a 1S3P configuration to provide the required voltage and increased capacity for extended use between charges.

Advantages

This replacement battery offers a direct-fit compatible form factor for devices built around 18650 cell packs, providing stable voltage output and consistent discharge characteristics suitable for portable audio applications. The 1S3P arrangement balances capacity and current delivery, allowing longer playback times compared to a single cell while maintaining the voltage required by the device. The pack is intended as a serviceable replacement to extend device life without requiring changes to the original power circuitry.

Suitable for

• Restoring runtime for compatible Marshall portable speakers and audio devices that use internal 18650 cell packs
• Replacing worn or degraded internal batteries in field repairs and refurbishment
• Use by technicians and service centers performing component-level battery replacement

Key specifications

• Cell type: Lithium-ion 18650
• Configuration: 1S3P (one series, three parallel)
• Nominal capacity: 2200 mAh (per pack)
• Nominal voltage: standard single-cell nominal voltage maintained by 1S configuration
• Intended use: internal replacement battery for portable audio devices

How to use

Before installation, power off the device and disconnect it from any external chargers. Access the internal battery compartment following the device manufacturer’s service instructions. Remove the old battery pack and replace it with the Newell TF18650-2200-1S3PA, ensuring correct polarity and secure connections. Reassemble the device and perform a full charge cycle before normal use to calibrate battery indicators and confirm proper operation.

Usage recommendations

Use only as a direct replacement in compatible models; avoid short circuits and exposure to high temperatures. Charge with a charger compatible with lithium-ion single-cell packs and follow the device manufacturer's guidelines for safe handling, charging, and disposal of used battery packs.