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• 2 Lithium-Polymer Batteries: 900 mAh, 3,7 V, 3,7 Wh each. No memory effect.
• Initial charge time: 8 hours, 4 hours to re-charge
• Charge hold: 2-8 hours depending on the outside temperature
and quality of your shoes or boots
• Heating temperature range: 88 - 111F
• temperature measured directly on the heating elements!
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Fabric Lining |
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PCB Board Thermostat
Heating Elements
Synthetic non-conductive material
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Shock absorbing, ergonomically shaped Polyurethane bottom
Electronics parts and Lithium-Polymer battery
On/Off LED
charging socket
heat preserving synthetic material
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Insulating fabric lining |
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BATTERY PERFORMANCE COMPARISONS
| battery type |
Li-Polymer
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Li-Ionen
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Ni-Mh
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Ni-Cd
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| safety |
excellent
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fair
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good
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good
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| nominal voltage (V) |
3,7
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3,7
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1,2
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1,2
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gravimetric energy density
(WH/kg) |
highest
(160-210)
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high
(120-160)
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mid
(40)
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low
(50-80)
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| memory effect |
no
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no
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yes
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yes
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| life cycle |
< 500
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< 500
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300-500
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300-500
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| environmental friendliness |
yes
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no
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no
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no
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ADVANTAGES OF LI POLYMER BATTERIES
- enhanced safety
- leakage-proof ( no free electrolyte )
- ultra-thin
- ultra-light
- high energy density
- long life cycle
- environment-friendly ( pollution-free )
TEXTILE SPECIFICATION for Thermo Soles
60 % polyurethane
23 % paper
17 % polyester
Now the Thermo Soles are available at a price of $99.00 ($129.00), you save $30.00.
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