These slim fitting (rechargeable 2025 Lenz rcB 2000 Lithium packs, snap in at the top cuff of the socks and have push button settings and built-in Bluetooth Smart, so you can easily regulate the heat to your preference, with 3 different heat settings from the power button on the batteries or from your Smartphone. Unlike most batteries, these proprietary Lenz 2000 battery packs were designed to perform in extreme cold temperatures, and can heat up to 22 hours on the low setting. Plus, they have the same Impulse Control technology that was developed for high-end ski boot heaters, which stimulates blood circulation while in use. These Heated Socks have been very popular in Europe and now you can experience the comfort. Purchase these Lenz lithium packs online.

New Lenz Heat App:
No more need for a remote, you can adjust the amount of heat in your socks with you Smart Phone. Use the new Lenz heat app to quickly and easily regulate the heat control of the battery. It also provides you with an overview of the current charging status of your battery. If you don't have a Smart phone you can still control the temperature from the power button on the batteries.

• 2 Lithium Pack rcB 2000 Batteries (Rechargeable), Bluetooth enabled
• 1 USB-Global Charger 100 - 240 VAC with Charging Display
• Instruction how to download the Smart Phone App**

Lithium Power Pack 2000 Features:

• Ultralight lithium-ion batteries provide warmth for up to 22 hours
• Heat output can be regulated from the power button on the lithium battery pack with 3 settings
• Alternatively, heat output can be regulated with 9 settings freely via a Smartphone (Smart Ready)
• Rechargeable Lithium batteries
• Temperature protection
• Small, lightweight (approx. 115 grams) and compact
• Short charging time (7 - 9 hours)
• 4000mAh Battery Capacity
• The Impulse Control stimulates blood circulation
• USB-C Global charger with automatic charging function
• Compatible with rcB 1200, rcB 1800 and heat pack chargers
• The battery pack is fastened on the cuff of the sock with snap fasteners
• One Year Limited Warranty