ByteBlues RC3563 Battery Internal Resistance Tester, true four-wire AC internal resistance sorter Lead-acid, lithium battery, UPS / solar battery test. It supports serial ports and computer software for production testing. Very usefull for Cell sorting & testing. EV Battery repair, cell testing.
Download link of the software,https://www.adrive.com/public/vaNcX6/RC3563%20software%20EN.rar
This listing include 3pcs test leads as the picutre shows.


Features
The battery internal resistance tester can measure the internal resistance and voltage of the battery at the same time. It adopts a Kelvin four-wire test clip, which can better avoid the influence of contact resistance and wire resistance, and can perform more accurate measurements.
This product adopts intelligent control, LCD display, and implanted Kalman filter mathematical algorithm. It has the advantages of high precision, high efficiency, low cost, light weight, energy saving and environmental protection. Built-in 1000mAh lithium battery, 5V charging, Audroid mobile phone charger can be used, very convenient.
This product is widely used in various battery production, maintenance, testing, scientific research laboratories and other occasions. It can also be used to measure the AC resistance of capacitors and low-resistance high-precision resistance.

Parameters
Test parameters:AC resistance, DC voltage
Measurement accuracy:
Resistance:0.5%
Voltage:0.5%
Measuring range:
Resistance:0.001mΩ ~ 200Ω
Voltage:0.001V ~ ±100VDC
Signal source;
Frequency: AC 1kHz
Current: 2mΩ/20mΩ range 50mA; 200mΩ/2Ω range 5mA; 20Ω/200Ω range 0.5mA
Range:
6 ranges automatic and manual
3 ranges automatic and manual
Test speed:5 times/sec
Correction:
Resistance: each range is individually and manually calibrated without affecting each other
Voltage: each range is individually calibrated manually, and does not affect each other
Factory settings:
Save the factory information, one key can restore the factory state
Energy saving settings:
about 10 minutes delay, automatic shutdown without any operation
Applicable scope:
Cell phone, computer, electric vehicle and other battery maintenance, battery factory inspection and testing
Show results:LCD display
Power supply:Built-in lithium battery, using 5V/1A charger
Size:166*80*28mm(L*W*H)
Language:English/Chinese
Interface of PC software



More pictures










Package include
1 x RC3563 tester
1 x USB cable
3 x Test leads
Instruction Manual

📊 ByteBlues RC3563 Battery IR Tester Key Features:-
- ✔ High-accuracy Internal Resistance (mΩ) measurement
- ✔ 4-wire Kelvin testing for precise readings
- ✔ Supports Li-ion, LiFePO4, Lead-acid batteries
- ✔ Voltage measurement up to 100V DC
- ✔ Fast response time (~100ms)
- ✔ Portable handheld design with LCD display
- ✔ Ideal for EV, solar, inverter, and battery repair
- Free PC/ laptop software for measurement logging
- Internal Resistance Quick Reference Card available for Download
📐 TECHNICAL SPECIFICATIONS
| Parameter | Specification |
|---|---|
| Measurement Type | Internal Resistance (mΩ) + Voltage |
| Resistance Range | 0.01 mΩ – 200 Ω (model dependent) |
| Resolution | 0.01 mΩ |
| Voltage Range | 0 – 100V DC |
| Accuracy | ±0.5% (typical) |
| Measurement Method | 4-wire Kelvin |
| Display | LCD Digital |
| Response Time | ~100 ms |
| Power Supply | Internal battery / USB (model dependent) |
| Operating Temp | 0°C – 40°C |
| Probe Type | Kelvin clip probes |
🧠 PRODUCT DESCRIPTION
🔍 Why Internal Resistance Matters
Battery voltage alone does NOT indicate health.
Internal resistance increases as batteries degrade.
👉 Higher resistance =
- Reduced capacity
- Heat generation
- Sudden failure risk
This device allows you to detect weak batteries before failure.
⚙️ What This Device Does
This Battery Internal Resistance Tester (IR Meter) measures:
- Internal resistance (mΩ)
- Battery voltage (V)
Using Kelvin 4-wire method, ensuring high accuracy even at low resistance levels.
🔧 USE CASES
🚗 EV & E-Rickshaw Repair
- Identify weak cells in battery packs
- Prevent unexpected breakdowns
🔋 Lithium Battery Pack Builders (18650/21700)
- Match cells by resistance
- Free Computer software for production testing
- Improve pack performance and life
🔌 Inverter & UPS Maintenance
- Detect aging batteries
- Avoid backup failure
☀️ Solar Installations
- Monitor battery bank health
- Ensure system reliability
💻 Laptop & Mobile Repair
- Diagnose battery condition
- Avoid unnecessary replacement
🧪 Educational & Lab Use
- Electronics labs
- Engineering students
📦 PACKAGE CONTENTS
- 1 × Internal Resistance Tester
- 3 × Kelvin Probe Set
- 1 × User Manual
⚠️ PRECAUTIONS
- ❗ Always ensure correct polarity before connecting probes
- ❗ Do NOT measure batteries beyond rated voltage (100V max)
- ❗ Avoid loose probe contact — may cause inaccurate readings
- ❗ Do not use on live high-current circuits under load
- ❗ Keep probes clean for accurate measurement
- ❗ Store in dry environment, avoid moisture
🧠 HOW TO USE
- Turn ON the device
- Connect Kelvin probes to battery terminals
- Ensure firm contact
- Read:
- Voltage (V)
- Internal Resistance (mΩ)
👉 Compare resistance values:
- Low mΩ → Healthy battery
- High mΩ → Degraded battery








