With four cells in each Battery Pack, The Power Plus S4 is Hotronic’s most powerful, longest-lasting Battery Pack for use in its S Series Footwarmers. Use these batteries as replacements with better reliability and longevity than ever before with NiMH technology.
Maintains up to 55% of full charge and 95% of initial capacity after four years of non-use.
Increased capacity offers up to 30% in higher average temperature and longer duration on a single full charge in the cold.
Redesigned power toggle switch to minimize unintended outages.