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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4.2 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Dogs love these!
Pros: keeps the dog entertained both solo and tug of war.
Super entertaing to watch the dog beat itself half to death with a big grin on it face.
Cons: dog will beat everything else to death too. You're basically giving your dog a wrecking ball. Similar to giving rubber nunchucks to a hyper 8yr old kid.
If you dont own much nice stuff or you keep it all out of reach you should be fine.
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Reviewed in the United States on November 1, 2023
★★★★★ 1
Worst Toy Ever
Rope broke in one use of tug a war with my dog and I. It literally pulled apart, didn't even last 5 minutes. Not a strong toy at all.
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Reviewed in the United States on February 7, 2026
★★★★★ 5
Small
A little small but my dog loved them. Does not hold up to a shredder though. Perfect for typical toy lovers
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Reviewed in the United States on January 18, 2026
★★★★★ 5
Well made, sturdy toys
Color: 3 Pack Donkey Goat Dog
So cute! Sturdy too, great for tugs of war.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
None of the stuffing pulled out
I have 3 dogs. 1 is very gentle w/ stuffed toys. 1 is new to us and very anxious and kept stealing things like water bottles to gnaw on. And 1 destroys every stuffed toy we have ever brought into the house. We bought these for the anxious one. She was recently adopted and very people shy and afraid of the world around her. She doesn't know how to play with people and she's terrified if you try to throw a ball or if you squeak a squeaker, but we also needed something durable enough for her chewing that would be safe for her and could also withstand the toy destroyer possibly getting hold of it. They've been playing with these for a few months now and the most damage is that some of the rope necks are a bit frayed and a lot of the fuzz on the outside is gone, but none of them have been torn open. And the squeakers are in there in a way that it's hard to make them squeak if not doing so intentionally. The 1 dog can have plush toys again, the 1 dog can gnaw and chew to reduce her anxiety and the 3rd can chew and attack it without me having to clean up stuffing all the time
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Reviewed in the United States on August 6, 2022