12705 、12706 Power output is limited to 30W and cannot reach the rated power.

The cooling pad operates on a single-sided cooling and single-sided heating principle. During operation, ensure the heating surface has adequate ventilation. If effective cooling is not provided, do not keep the power on continuously for more than 2 seconds. Otherwise, overheating may cause damage and result in buyer loss!!!
Buyer’s Post-Delivery Testing Method:
Test using only a single battery cell.
Hold the cooling pad in one hand.
Press the pad’s lead wire against the battery terminal with the other hand.
If one side feels slightly cool while the other feels slightly warm, the cooling pad functions normally.
Always apply thermal paste when installing the heat sink.
The side marked with text is the cooling surface.
The unmarked side is the heating surface.

12706 Note: Rated voltage 12V. When connected to a 12V power source, a temperature difference will appear on both sides of the cooling pad—one side cold, one side hot. Never operate the cooler for extended periods without a heat sink, as this may cause internal overheating and burnout.

Chip Model:
TEC1-12703
Dimensions: 40*40*4.0MM ±0.1 Number of Elements: 127 Wire Specifications: Lead length 310MM ±5MM RVS Standard Wire Terminals 5M Internal Resistance: 4.0~4.3Ω (Ambient temperature 23±1℃, 1KHZ AC test) Maximum Temperature Difference: At MAX (QC=0) 60℃ or above. Operating Current: IMAX = 12A (at rated voltage startup) Rated Voltage: DC 12V (VMAX: 15.5V)
Cooling Power: QCMAX 27W
Mounting Pressure: 85 N/cm²
Operating Environment: Temperature Range -55°C to 83°C (Excessive ambient temperature directly affects cooling efficiency)
Encapsulation Process: Standard 704 silicone rubber seal around perimeter
Packaging Standard: Foam box packaging, Storage Conditions Ambient Temperature -10°C to 40°C
Storage Conditions: -40°C to 60°C

12704:
Chip Model: TEC1-12704
Dimensions: 40*40*4.2MM Number of Element Pairs: 127 Wire Specifications: Lead Length 100±5MM RV Standard Wire Single End 5MM Tin-Plated Internal Resistance: 3.0~3.3Q (Ambient Temperature 23±1℃, 1KHZ AC Test) Maximum Temperature Difference: AT MAX (QC=0) 60℃ and above. Operating Current: IMAX = 12A (at rated voltage startup) Rated Voltage: DC 12V (VMAX: 15.5V)
Cooling Power: QCMAX 36W
Assembly Torque: 85 N·cm²
Operating Environment: Temperature Range -55°C to 83°C (Excessive ambient temperature directly impacts cooling efficiency)
Sealing Process: Standard 704 silicone rubber seal around perimeter
Packaging Standard: Foam box packaging, Storage Conditions Ambient Temperature -10°C to 40°C
Storage Conditions: -40°C to 60°C

12705:
Chip Model: TEC1-12705
Dimensions: 40*40*3.8MM Number of elements: 127 Wire specifications: Lead length 100±5MM RV standard wire terminals 5MM tin-plated Internal resistance: 2.4~2.7Ω (Ambient temperature 23±1℃, 1KHZ AC test) Maximum temperature difference: At MAX (QC=0) 61℃ and above. Operating Current: IMAX=5A (at rated voltage startup)
Rated Voltage: DC12V (VMAX: 15.5V)
Cooling Power: QCMAX 45W
Mounting Pressure: 85N/cm²
Operating Environment: Temperature Range -55°C to 83°C (Excessive ambient temperature directly impacts cooling efficiency)
Encapsulation Process: Standard 704 silicone rubber seal around perimeter
Packaging Standard: Foam box packaging, storage conditions ambient temperature -10°C to 40°C
Storage Conditions: -40°C to 60°C

12706:
Chip Model: TEC1-12706
External Dimensions: 40*40*3.75MM
Internal Resistance: 2.1~2.4Q (Ambient Temperature 23±1℃, 1KHZ AC Test)
Maximum Temperature Difference: ATMAX (QC=0) 59℃ and above.
Operating Current: IMAX=4.3-4.6A (at rated 12V)
Rated Voltage: 12V (VMAX: 15V, startup current 5.8A)
Cooling Capacity: QCMAX 60-72W
Operating Environment: Temperature Range -55℃~83℃ (Excessively high ambient temperatures directly reduce cooling efficiency)

12708:
Chip Model: TEC1-12708
Dimensions: 40*40*3.5MM
Number of Elements: 127
Wire Specifications: Lead Length: 300±8mm RV Standard Lead Terminals: 5mm Tin-Plated Internal Resistance: 1.5~1.7Ω (At 23±1°C, 1kHz AC Test) Maximum Temperature Difference: At MAX (QC=0) 60°C+ Operating Current: IMAX=8A (at rated voltage startup) Rated Voltage: DC12V (VMAX: 15.5V) Cooling Power: QCMAX 77W
Assembly Pressure: 85 N/cm²
Operating Environment: Temperature Range -55°C to 83°C (Excessive ambient temperature directly impacts cooling efficiency)
Sealing Process: Standard 704 silicone rubber seal around perimeter
Packaging Standard: Foam box packaging, Storage Condition Ambient Temperature -10°C to 40°C
Storage Conditions: -40°C to 60°C

12709:
Maximum current IMAXA: 9A
Maximum temperature difference: 68°C
Maximum voltage: 15.2V
(Hot-end temperature TH=27°C): 82W
Number of elements: 127
Dimensions: 40×40×3.4mm

12710:
Chip Model: TEC1-12710
Dimensions: 40*40*3.4MM
Number of Elements: 127
Lead Specification: Lead Length: 300±5mm RV Standard Wire: Single-Ended 5mm Tin-Plated (AC Test) Internal Resistance: 1.2~1.5Ω (Ambient Temp 23±1°C, 1kHz) Max Temperature Difference: At MAX (QC=0) 60°C+ Operating Current: IMAX = 10A (at 15V MAX voltage startup) Rated Voltage: DC 12V (VMAX: 15.5V)
Cooling Power: QCMAX 92W
Mounting Pressure: 85N/cm²
Operating Environment: Temperature Range -55°C to 83°C (Excessive ambient temperature directly impacts cooling efficiency)
Sealing Process: Standard 704 silicone rubber seal around perimeter
Packaging Standard: Foam box packaging, Storage Condition Ambient Temperature -10°C to 40°C
Storage Conditions: -40°C to 60°C

12715: Product Model: TEC1-12715
Maximum Voltage: 15.4V
Maximum Current: 15A
Cooling Capacity: 134W
Temperature Difference: 65°C