400-Day Anniversary Clock Battery Adapter – Replaces #8 & #9

400-Day Clock Battery Adapter – Replaces #8 and #9 Battery Packs – For Kundo, Junghans & Similar – All-Metal – Uses 2 ‘AA’ Batteries
This 400-Day Battery Adapter is a practical and cost-saving solution for powering vintage Kundo, Junghans, and similar 400-day battery-operated anniversary clocks. Instead of sourcing expensive and outdated #8 or #9 battery packs, this adapter allows you to use two standard ‘AA’ batteries (not included) for reliable, modern power.

Made from durable all-metal construction, this adapter mounts discreetly to the underside of the clock’s base. It’s compact, lightweight, and easy to install—just insert the batteries, attach the adapter to the clock’s original battery terminals, and you’re ready to go.

Ideal for clock collectors and restorers, this tool not only saves money over time but also preserves the operation of your anniversary clock without altering its appearance.

Product Details
Type: Battery adapter for 400-day clocks
Compatibility: Replaces #8 and #9 battery packs (Kundo, Junghans, and similar brands)
Power Source: Holds 2 ‘AA’ batteries (not included)
Material: All-metal housing
Installation: Mounts to the underside of the clock base
Size: 3-1/4″ W x 4-3/8″ H x 3/4″ D (83mm x 111mm x 19mm)
Condition: New item
Intended Use: Modern battery replacement for vintage anniversary clocks

Features & Uses
Save Money: Eliminates the need for costly vintage battery packs
Easy Conversion: Use 2 ‘AA’ batteries in place of outdated #8 or #9 batteries
Universal Fit: Compatible with most Kundo, Junghans, and similar 400-day clocks
Durable Construction: All-metal build ensures long-term reliability
Compact Design: Mounts cleanly under the base—no visual disruption
Ideal for Restoration: Maintains functionality while preserving the original look