Battery pack Bosch Ultra Lithium FR6UL4B/00 — 4-pack AAA (LR03) alkaline replacement

Bosch Ultra Lithium FR6UL4B/00 — 4-pack AAA (LR03) alkaline replacement batteries supply portable devices with dependable primary-cell power in the AAA form factor. The set includes four ready-to-use cells designed for everyday consumer electronics that accept AAA/LR03 batteries. These Bosch Ultra Lithium replacement cells are intended to deliver stable voltage and consistent performance across a range of low- and moderate-drain applications.

Advantages

These AAA replacement cells offer long shelf life and stable output suitable for intermittent and continuous use. The compact blister pack contains four individual cells that are ready to install, reducing the need for recharging or immediate replacement. The construction emphasizes low self-discharge and reliable performance in standard temperature ranges common for household and portable electronics.

Suitable for

• TV and audio remote controls
• Wall clocks and alarm clocks
• Children’s toys and handheld games
• Wireless computer mice and small peripherals
• Portable LED lights and small household gadgets

Key specifications

• Cell size: AAA (LR03)
• Quantity: 4 cells per pack
• Cell chemistry: primary lithium-style alkaline replacement
• Intended use: single-use (non-rechargeable) for consumer electronics
• Typical operating temperature range: suitable for normal indoor ambient conditions

How to use

Install each AAA battery into the device following the polarity markings (+/−) indicated in the battery compartment. Use one cell per slot and ensure contacts are clean and free from corrosion before insertion. Replace all cells in multi-cell compartments at the same time to maintain consistent device performance. Dispose of used batteries according to local regulations for single-use battery recycling or hazardous-waste collection.

Usage recommendations

Store the sealed pack in a cool, dry place away from direct sunlight and heat sources. Do not attempt to recharge, open, or short-circuit the cells. For devices with high continuous current draw, check device compatibility and consider manufacturer guidance to ensure optimal runtime.