BatteryGuy High-Rate Replacement for Sonnenschein M400 — BatteryGuy Equivalent (Qty of 18)

Pack of 18 BatteryGuy high-rate replacement batteries engineered as direct equivalents for the Sonnenschein M400. These BatteryGuy-brand units are offered as a convenient, like-for-like swap to replace Sonnenschein M400 batteries in high-discharge applications. Supplied as a bundle (Qty of 18), they preserve the original form, fit and performance characteristics expected from the Sonnenschein M400 while providing an alternative source.