Hotronic - Keeping Feet Warm, Keeping Hands and Feet Dry!
FootWarmer S4 Universal and Custom
FootWarmer S4

Where To Buy

S SERIES FOOTWARMER

  • Offers up to a combined 30% increase in higher average temperatures and longer durations on a single full charge.
  • Maintains up to 55% of a full charge and 95% of the initial capacity after four years of non-use!
  • Provides power when needed most, in the cold!

WHEREVER ONE GOES - WHATEVER ONE DOES

  • Installs in all types of footwear.
  • Transfers from one pair of footwear to another.
  • Use while skiing, snowboarding, bicycling, horseback riding, and during other general cold-temperature activities.

TWO VERSIONS TO CHOOSE FROM

HOTRONIC’S BATTERY PACK S4

  • Offer three (3) base level settings for comfort and warmth maintenance.
  • Provide a fourth (4th) “timed” setting for an extra blast of heat.
  • Powered by high capacity, cold temperature operation, NiMH AA cells.
  • NiMH cells do NOT have a “memory effect” and do not require fully discharging before fully recharging.
Temperature & Duration Chart
Setting
Approximate Average Temperature
Duration Range
°F
°C
1
84 - 98
29 - 37
16.5 - 21 h
2
107 - 121
42 - 49
7 - 10.5 h
3
122 - 138
50 - 59
5 - 7.5 h
4
158 - 173
70 - 78
2.5 - 4.5 h
Based on Battery Pack in ambient temperatures of -22° to -15°C (-9° to +4°F).
Based on Heating Element in ambient temperatures of 20° to 26°C (68° to 79°F).

HOTRONIC’S RECHARGER POWER PLUS S/e/m SERIES

  • Compatible with all S, e, and m Series Battery Packs.
  • Advanced charging technology senses when one or more batteries inside each Pack are fully charged and protects them from overcharging damage by switching to trickle current recharging.
  • Global input range of 100V to 240V.
  • Meets full standards and approval from US and Canadian ETL as well as European CE.
  • Recharger LEDs indicate recharging mode and charge status.

HOTRONIC’S HEATING ELEMENTS

  • Easily install in Hotronic’s One Size Fits All Heat Ready Insoles, Semi Custom Heat Ready Insoles, on insoles of one’s own choice, or come pre-installed in Hotronic’s BD Anatomic Insoles.
  • Easily install on surface of insoles with self-adhesive layer as found on bottom of Heating Elements.
  • Provide effective anatomical coverage of toes with large oval shape.
  • Flexible Stress Relief on Plug facilitates plugging into and unplugging from Battery Pack. Remains flexible down to subzero (°F) temperatures.