Specifications of UT677A Battery Internal Resistance Tester
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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 | |
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4.6 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
Strong Chewer Friendly Toy
Style: Variety Pack - Large (3-pack)
My dog is a rough chewer and these last a really long time (clearly since this beaver's face is long gone! The no stuffing is a win too for cleaning up afterwards.
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Reviewed in the United States on April 26, 2026
★★★★★ 5
Fantastic Dog Toy!!!
Color: Purple
This is a great toy!!! My dog has lots of toys. But one of the problems is he has trouble getting the squeaker to squeak. He's an 18 lb terrier mix, and those squeakers are just elusive. Breaks my heart.
This one, though, the squeakers (there are two) are in small areas (head and tail), that are easy for him to get his whole mouth around and squeak. They also don't move, which also makes them easy to squeak.
So he's been squeaking up a storm since he got this!
Other plusses:
* The material is great (soft, furry material, that seems to be of good quality).
* The toy expands and contracts, which is fun.
* It's pleasant to look at.
All in all, I'd say this is one of the best dog toys I've ever bought for my dog. Highly recommended!
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Reviewed in the United States on January 11, 2015
★★★★★ 5
Great Toy in Spite of Everything.
Color: Purple
My dog is a border collie. She loves chewing, fetching, tug of war and catch. The first day we had this toy she chewed off two of the feet. I didn't give it much of a life span. Two weeks later she chewed off a third foot. Miraculously no stuffing was exposed. It has now been a month and the toy is still going strong, albeit with one foot! She loves it.
It is now June 1st. It has been almost three months and I am retiring the toy. It no longer has any feet and the tail has been ripped open and stuffing is coming out. All in all I think I got my money's worth from this toy. I ordered another one. She still loves it!
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Reviewed in the United States on March 29, 2014
★★★★★ 5
Toys
Color: Orange
My dog loves this
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Reviewed in the United States on June 5, 2026
★★★★★ 4
Awesome, but not the best squeakers.
Color: Purple
I bought the orange gecko for my 5-month-old Corgi puppy. He absolutely loves it. He came up with a "game" (sort of) where if I pick it up and start squeaking one of the ends/squeakers really quickly over and over, he'll grab the other end/squeaker and start doing the same thing with me. It was really cute until one of the squeakers stopped working about a week after I bought it... but I guess the toy wasn't too expensive, and he doesn't really seem to mind that one of the squeakers doesn't work anymore. I might buy another next time I do an Amazon order (so I can get the free shipping) and see if it lasts a little longer.
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Reviewed in the United States on August 2, 2013