SUNKKO T 685 двуязычное Высокая точность напряжение батареи и внутреннее сопротивление тестер (1600604657909)

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SUNKKO T-685 Bilingual high precision battery voltage and internal resistance tester

1.This instrument adopts the high-performance single-crystal microcomputer chip imported from ST Microelectronics,combined with the American "Microchip" high-resolution A/D conversion chip as the measurement control core,and the precise 1.000KHZAC positive current synthesized by the phase-locked loop is used as measurement signal source apply on the tested element. The generated weak voltage drop signal is processed by high- precision operational amplifier,and the corresponding internal resistance value is analyzed by intelligent digital filter.Finally,it is displayed on large screen dot matrix LCD.
2.The instrument has the advantages of high precision,automatic file selection, automatic polarity discrimination, fast measurement and wide measurement range.
3.The instrument can measure the voltage and internal resistance of the battery (pack)at the same time.Because of the
four-wire test probe,it can better avoid the superimposed interference of the measurement contact resistance and wire resistance, realize the excellent anti-external interference performance,so as to obtain more accurate numerical analysis of multiple measurements with the help of PC.
5.The instrument is suitable for accurate measurement of AC internal resistance of various battery packs(0~100V), especially for low internal resistance of high-capacity power batteries.
6.The instrument is suitable for battery pack research and development,production engineering, and battery screening in quality engineering.

Microchip Technology high-resolution 18-bit AD conversion chip to ensure accurate measurement;
● Double 5-digit display,the highest resolution value of measurement is 0. 1μQ/0. 1mv, Fine and high precision;
●Automatic multi-unit switching,covering a wide range of measurement needs;
●Automatic polarity judgment and display,no need to distinguish battery polarity;
● Balanced input Kelvin four-wire measuring probe,high anti-interference structure;
●1KHZAC current measurement method, high accuracy;
● Suitable for various battery/pack measurements below 100v;
●Equipped with computer serial connection terminal,expanded instrument measurement and analysis function;

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About us

Hunan XiaoLithium Technology Limited was located in Changsha City. We focus on designing, researching and developing,
manufacturing and selling Battery Management System, Power Equalizer, Spot Welders,Battery Charger and Accessories Of Battery Pack, etc.

These products are widely used on Electric Bikes, Electric Tricycle, Electric Scooter, Sweeper, Logistics Sorting
Robot, Sightseeing Vehicle,Electric Vehicle, Portable Outdoor Power Supply, Uninterruptible Power Supply, Solar Energy Storage, Peak Shaving Power Station with Energy Storage, etc.

Our company promises: The product quality is safe and reliable,Reasonable price, Fast delivery time and satisfactory after-sales service. Welcome to contact with us!


1.What is the common port and separate port? what is the difference?
We take 13S48V16A BMS as an example, common port 16A means your charge cathode and discharge cathode are connected in the same point end(our P-), charge cathode and discharge cathode are used in the common connectionport, so the charge current and discharge current are the same 16A. while the separate port is separately connected by charge cathode (C-) and discharge cathode (P-), so the charge current and discharge current are different, discharge current 16A, charge current 8A.

2.What is the balance function?
The working principle and function are as followings, when your one cell voltage is upto alarm voltage(Li-ion upto 4.18V, Life Po4 upto (3.6V), then the cell Balance starts to work, balance resistance starts discharge with 35ma(when balance discharge starts to work, BMS will starts a little heat up, which is the normal reflection), the cell is in both charging and discharging status, and others which are not reached to alarm voltage(Li-ion 4.18V, Life Po43.6V)are only in charging status, no discharging, when the fast cell voltage is reached to alarm voltage(Li-ion 4.25V, Life Po43.75V)BMS starts off power protection, all the other cells are all in stop of charging, this process will enable your battery charging in balance current, and your battery voltage are in balance status, but when your cell voltage difference are in a big range, then balance can not be functionning well

3.The relationship between Battery capacity and BMS current?
There is no direct relationship between Battery capacity and BMS current, big capacity doesn`t mean a big battery, but rely on continue current, that is to say if your engine is powerful, your should choose high current of BMS, it is not relied on battery capacity.

4. What type of charger should I choose?
Lithium battery must choose specific charger, do not use Charger for Leadacid battery, for leadacid charger may have MOS with high pressure breakdown protection, which will not protect of BMS over charge.Life Po4 battery charger voltage=battery string No.X3.6V, while Li-ion battery charger voltage=Battery string No.X4.2V.

5. What current BMS should I choose ?
Take 10S36V as an example: what current BMS you choose is relied on your E-bicycle Motor power and current limitation of controller. eg., choose 16A for below 350W, 25A for below500W, 35A for below 800W, 60A for Below 1000W, higher than 1200W are contact with our service specialist for suggestions, one inall, continue current shall be higher than current limitation in Controller.

6. Whether my BMS damaged?
if you want to judge if the BMS is damaged, please take the folowing steps, to test if each cell voltage is the same with voltmeter? if the cell voltage difference is over 0.1V, the fault is displayed that it cannot run far, no power supply at thestart range, short charge time, all these issues are almost caused by battery cells, if BMS damaged is displyed as no charge, no discharge, no discharge while the battery has voltage.

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