Specifications of UT677A Battery Internal Resistance Tester
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 7 - Jul 12
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
UNI-T UT677A+ Battery Internal Resistance TesterSpecifications of UT677A Battery Internal Resistance Tester Function Range Resolution Battery Internal resistance range 0. 000m~3m 1%fs. 20dgt 1u 3. 000m~30m 0. 5%fs. 15dgt. 10u 3. 000m~300m 0. 5%fs. 15dgt. 100u 300m~3 0. 5% fs. 15dgt. 100m Battery Voltage range 0. 000V~7 V 0. 2%fs. 10dgt. 1mV 7 V~71. 00V 0. 2 % fs. 10dgt. Temperature range 10. 0C~60. 0C (single range) 1. 0 0. 1 Accuracy Guaranteed Temperature Humidity 235, <75%rh Features Measuring
| Function | Range | Resolution |
| Battery Internal resistance range | 0.000mΩ~3mΩ / ±1%fs. ±20dgt | 1uΩ |
| 3.000mΩ~30mΩ / ±0.5%fs. ±15dgt. | 10uΩ | |
| 3.000mΩ~300mΩ / ±0.5%fs. ±15dgt. | 100uΩ | |
| 300mΩ~3Ω /±0.5% fs. ±15dgt. | 100mΩ | |
| Battery Voltage range | 0.000V~±7 V/±0.2%fs. ±10dgt. | 1mV |
| 7 V~±71.00V/±0.2 % fs. ±10dgt. | ||
| Temperature range | -10.0°C~60.0°C (single range)/ ±1.0℃ | 0.1℃ |
| Accuracy Guaranteed Temperature Humidity | 23℃±5℃, <75%rh | |
| Features | ||
| Measuring method | 1. Internal resistance measurement: 1KHz AC 4-terminal test method, open-circuit terminal voltage 3V max 2. Measuring current: 2.0mA~200mA (different measuring currents in different ranges) 3. Temperature measurement: NTC temperature sensor (10KΩ at 26°C) 4. A/D conversion method: successive approximation type 5. Display update frequency: 5 times/second |
|
| Screen | 3.5 inches (320*240, 16-bit true color screen) | |
| Response time | 200ms | |
| Measuring time | About 2 sec | |
| USB interface | Read real-time measurement values, read historical measurement records | |
| Bluethooth app | √ | |
| Data hold and storage | 1. Manual hold and storage, automatic hold and storage 2. Up to 5000 set measurement data storage |
|
| Measurement judgment function | PASS, WARNING, FAIL judgment thresholds can be preset | |
| Power | 1. DC 3.7V lithium battery 2. 5-bar display of power, reminding to charge in time |
|
| Power consumption | 300mA MIN/500mA MAX | |
| Automatic shut-down | Around 15 minutes | |
| Weight | 480g (including battery) | |
| Dimension | 190mm×121mm×51mm (L*W*H) | |
| Working temperature and humidity | -10℃～40℃; below 80%RH | |
| Storage temperature and humidity | -20℃～60℃; below 70%RH | |
| Insulation resistance | Above 20MΩ (500V between circuit and case) | |
| Puncture test | AC 3700V/rms (between circuit and case) | |
| External magnetic field | <40A/m | |
| External electric field | <1V/m | |
| Suitable for safety regulations | IEC 61010 | |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 863 reviews
Sort
Product Reviews
★★★★★ 5
Soooooo comfy!!!
Team Name: Cooling Comforter, Size: King(104"x90"), Color: 01cream White
THE best cooling comforter Ive purchased! It’s so soft and smooth and has just enough weight to it for comfort but still light enough. I’m def buying more!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
★★★★★ 5
Coolest sleep ever
Team Name: Cooling Comforter, Size: King(104"x90"), Color: 01grey
This thing is awesome, I can wrap my whole body up and still have plenty of comforter left. Keeps me nice and cool no more night sweats. Perfect thickness and you cant beat the price. Absolutely love the color fit perfectly with my room and colors already.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2026
★★★★★ 4
Wonderful
Team Name: Cooling Comforter, Size: Full/Queen(90"x90"), Color: 01blue
Works wonders for cooling! Very breathable. It’s “slick” so slides off the bed overnight if you move a lot in your sleep.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 22, 2026
★★★★★ 5
Perfect for temperature rioting partners lol
Team Name: Cooling Comforter, Size: King(104"x90"), Color: 01grey
Awesome material exactly what I was looking for. Definitely stays cold. It’s perfect for my bf and he can now stay on his side of the bed with his blanket and stop turning the ac on lol
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026
★★★★★ 5
THE BESTTTT!
Team Name: Cooling Comforter, Size: King(104"x90"), Color: 01cream White
The BEST cooling blanket i have ever owned. it’s not too heavy or light. it doesn’t pile after washing a few times. I can not sleep without it. i have bought this for several family member’s and for my son and all say it’s be best blanket they have owned. BUY IT!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026