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COMPONENTS AND PARTS

MAIN UNIT

1. Mini USB port
2. ON/OFF button
3. Red LED—Charging indicator
4. Green LED—Heat indicator
5. Top cap
6. Bottom cap

INCLUDED ACCESSORIES

• (1) USB cable
• (1) Soft carrying bag

CHARGING THE INTERNAL LITHIUM ION BATTERY 

Your ThermoTank hand warmer has an internal, 4400 mAh 
rechargeable Lithium Ion battery, which allows for up to 6 
hours of continuous use at a constant temperature of 40° 
to 45°C (104° to 113°).  Your ThermoTank will ship with a 
partial charge, but you should charge it completely before 
using it for the first time.

TO CHARGE THE BATTERY:

1.  Plug the Mini USB connector into the Mini USB port  

(1) on the ThermoTank.

2.  Plug the standard USB plug end of the included USB 

cable into a USB port on a PC, laptop, car charger or USB 
5V-500mA adapter plug

3.  Once plugged in, charging will begin and the Red LED  

(3) will start to blink.

4.  When the Red LED (3) stops blinking, the charge  

is complete.

NOTE:  

The ThermoTank is designed with overcharge 
protection to prevent damage to the internal battery.

USING YOUR HAND WARMER

Press the ON/OFF button (2) to turn on your ThermoTank. 
The green LED will illuminate. ThermoTank will begin to 
heat up and reach its maximum temperature in a few 
minutes. Press the ON/OFF button again to turn the unit 
off. Use the included silicone caps to help repel moisture 
and protect the device from bumps and drops.

SPECIFICATIONS

BATTERY:

 Rechargeable Lithium Ion—4400 mAh

INPUT:

 5V- 900mA 

CHARGE TIME:

 USB—5 hours

USE TIME: 

At least 6 hours continuous use with 

fully charged battery

LED status indicators

   

(1) Red LED—Charging indicator                                                  
(1) Green LED—Heat indicator

NUMBER OF CHARGE CYCLES:

 >500 

OPERATING TEMPERATURE RANGE: 

32° to 113°F (0 to 45°C) 

STORAGE TEMPERATURE RANGE: 

68° to 77° F 

(optimal)

WEIGHT AND DIMENSIONS: 

148 grams, 45 mm x 95 

mm x 23 mm (1.77” x  3.74” x .90”)

NOTE:  

Storage of more than 6 months without use will have 
detrimental effect on battery life.

WARNING:

•  “Extreme” temperatures are not recommended when storing 

your ThermoTank

•    Optimal storage temperature range is:
    40° to 77°F (4° to 25°C)
• Optimal operating temperature range is:
   14° to 140°F (-10° to 60°C) 

Thank you for purchasing a ThermoTank hand warmer. Please read the instructions carefully before using your ThermoTank hand warmer to 
ensure proper use and care.

Model # 48011

thermotank

thermotank

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