Power your cold-weather gear with the Hotronic Battery Pack S4+, designed to extend warmth and keep you comfortable in extreme conditions. This compact yet powerful rechargeable battery delivers consistent heat for up to 21 hours on the lowest setting, making it perfect for long days on the slopes or outdoors. Featuring four adjustable temperature levels, you can easily customize your comfort. Fully compatible with previous S4 heating systems, its an essential backup or replacement for uninterrupted performance.

Features:

• Includes 1 Power Plus S4+ rechargeable battery pack
• Up to 21 hours of heat (depending on conditions)
• 4 adjustable temperature settings (84F173F / 29C78C)
• Reliable NiMH battery technology
• Compatible with existing S4 heating elements
• Ideal as a replacement or extra battery for extended use