• Celestron Elements Thermothank 3

Celestron Elements Thermothank 3

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  • Durable, aluminum housed, long-lasting, rechargeable hand warmer
  • 3000 mAh lithium battery provides up to 4 hours of continuous heat
  • Ergonomically designed to provide maximum contact with your hands
  • Convenient size easily fits in your pocket, purse, glove compartment or bag pocket


On the trail, at the job site, in the classroom, or simply sitting at home relaxing – the Celestron Elements ThermoTank 3 will keep your hands toasty warm with a maximum temperature of 113°F. Unlike single use chemical hand warmers, the ThermoTank’s lithium ion battery can be recharged and used again and again, saving you money over time.

ThermoTank 3 provides up to 4 hours of continuous heat on a full charge. The unit was thoughtfully designed with an ergonomic form factor to provide maximum contact with your hands. ThermoTank 3 provides scent-free heat that is undetectable to wildlife.


Functionality Hand warmer
Battery Type Lithium Ion
Battery Size 3000 mAh
Battery Life- Hand Warmer function Up to 4 hours (continuous use based on fully charged battery)
Battery Life - Charging function N/A
Hand Warmer Temperature Range Up to 113°F (45°C)
Hand Warmer Heat modes On/Off
LED indicators (1) Red LED—Charging indicator | (1) Green LED—Heat indicator
Auto Charge Feature N/A
Power Input Mini USB Connector / 5V- 900mA
Power Output N/A
Input Charge Time N/A
C-Link Feature N/A
Ports (1) Mini USB in port for charging internal lithium ion battery
Environmental Protection Level None
Ergonomics N/A
Weight 5.22 oz (148 g)
Dimensions 44.9mm x 94.6mm x 22.9mm (1.76" x 3.72" x 0.9")
Included Accessories Black USB-A to USB mini-A charging cable | Storage pouch | Instruction sheet