Rechargeable Button Cell Battery Varta V15H-SLF, NiMH 15 mAh 1.2 V

Varta V15H-SLF is a rechargeable button cell battery based on NiMH chemistry with a nominal capacity of 15 mAh and a nominal voltage of 1.2 V. It is engineered for compact electronic devices where a low-voltage, rechargeable energy source is required. The cell delivers stable voltage over multiple charge/discharge cycles and is sized for installation in small housings such as wrist devices, miniature sensors and memory backup compartments.

Advantages

The NiMH composition provides consistently lower self-discharge compared with older rechargeable chemistries, while sustaining reliable output during repetitive use. Its compact button form factor enables placement in tight or recessed battery compartments. Rechargeability reduces the need for frequent replacement, and the cell’s nominal voltage of 1.2 V is compatible with many circuits designed for single-cell rechargeable operation.

Suitable for

• Wristwatches and small wearable electronics
• Hearing devices and in-ear equipment
• Miniature sensors, data loggers and remote controls
• Memory backup for microcontrollers and small electronic modules

Key specifications

• Chemistry: Nickel–metal hydride (NiMH)
• Nominal capacity: 15 mAh
• Nominal voltage: 1.2 V
• Form factor: button cell for compact installation
• Intended use: rechargeable single-cell applications with low current draw

How to use

Install the cell in the device following the polarity markings and the manufacturer’s battery compartment instructions. Charge the cell only with a charger designed for NiMH button cells or compatible single-cell NiMH chargers, observing the charger manufacturer’s recommended charge current and termination method. Allow the cell to cool to ambient temperature before charging if it has been in continuous operation. Periodically verify contact surfaces are clean and free of corrosion to ensure consistent electrical connection.

Usage recommendations

Use this rechargeable button cell in low-drain applications and where repeated charging is expected. Avoid charging with high-current chargers not specified for small-capacity NiMH cells. Store unused cells in a cool, dry place and follow local regulations for disposal or recycling of rechargeable batteries.