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Battery testers for measuring voltage, capacity and internal resistance. Suitable for lithium, car batteries, UPS systems and electronic devices.
There are 2 products.
Availability: 10 In StockThe ZT-XR1 is a high-precision battery internal resistance tester combined with a 25,000-count True-RMS digital multimeter. It measures mΩ battery resistance, voltage, frequency, continuity, diodes and more — making it ideal for repair shops, technicians and hobbyists.
Its large display, fast auto-range function and accurate mΩ readings make it perfect for diagnosing lithium, AA/AAA, NiMH and rechargeable battery health. The ZT-XR1 ensures you can quickly identify weak or failing batteries under load.
UK stock with VAT invoice and fast delivery.
Availability: 19 In StockThe ZOYI ZT-DQ02 is a compact handheld LCR meter and battery internal resistance tester designed for technicians, engineers, repair shops and electronics hobbyists. It measures inductance, capacitance, resistance, impedance, ESR and battery internal resistance, making it suitable for component testing, battery health checks and PCB fault finding.
With a wide 100Hz to 100kHz test frequency range, auto-ranging operation and high-precision test clips, the ZT-DQ02 helps diagnose capacitors, resistors, inductors, SMD components and rechargeable batteries quickly and accurately.
Suitable for checking lithium batteries, lead-acid batteries, capacitors, coils and general electronic components. UK stock with VAT invoice included.
Battery Testers for Voltage, Internal Resistance & Battery Diagnostics
ZOYI battery testers are designed to help evaluate battery condition by measuring parameters such as battery voltage and internal resistance. They are suitable for testing lithium-ion batteries, rechargeable cells, battery packs and other compatible battery systems used in electronics, automotive diagnostics, maintenance and energy applications.
What Can a Battery Tester Help You Check?
- Battery voltage – check the measured voltage of cells and battery packs
- Internal resistance – help compare battery condition and performance
- Compare cells before assembling or servicing battery packs
- Identify batteries showing abnormal measurements
- Support battery maintenance, repair and electronics diagnostics
Battery Tester or Digital Multimeter?
A digital multimeter is useful for general electrical measurements and basic battery voltage checks. A specialist battery resistance tester is more suitable when you also need internal resistance measurements to help compare batteries and investigate their condition.
Common Battery Tester Applications
Battery testers are useful for electronics repair, rechargeable battery testing, battery pack maintenance, workshop diagnostics and cell comparison. Measuring internal resistance alongside voltage can provide additional information when assessing batteries during maintenance or fault finding.
For other specialist diagnostic instruments, browse our electronic component testers , including LCR meters, SMD testers and transistor testers.
ZOYI Battery Tester Manuals & Support
Already own a ZOYI battery tester? Visit ZOYI Manuals & Firmware Downloads for available manuals, documentation, firmware and software.

