Description
JDiag • Insulation resistance tester EV0011
The JDiag EV001 insulation resistance tester is a professional diagnostic tool designed for high-voltage electric and hybrid vehicles. It features a rugged ABS housing, 3.5-inch TFF color display, and built-in rechargeable 3.7 V / 4000 mAh battery with USB-C (5 V / 2 A) power. It measures insulation resistance up to 10 GΩ and supports five selectable test voltages (50, 100, 250, 500, 1000 V), internal resistance of battery packs, AC/DC voltage measurement, battery health tests, and data storage & comparison. Ideal for EV/HEV maintenance professionals, field service, workshops monitoring insulation aging, leakages or short circuits.
Key benefits
- Wide insulation resistance range (0.01 MΩ to 10 GΩ) covering most EV high-voltage systems
- Battery internal resistance measurement from 0.1 mΩ to 199.99 Ω for assessing pack health
- Multiple selectable test voltages for flexibility across components and insulation levels
- AC & DC voltage measurement up to 1000 V (DC) / 750 V (AC) for safety and pre-test checks
- Supports battery diagnostic standards (CCA, JIS, GB, SAE, DIN, IEC, EN, BCI, others) for global compatibility
Supported protocols
- CCA
- JIS
- GB
- SAE
- MCA
- CA
- DIN
- IEC
- EN
- BCI
Supported functions
Depending on vehicle compatibility the following functions are supported:
- Insulation resistance test
- Internal resistance measurement of batteries
- AC voltage measurement
- DC voltage measurement
- Battery health indicators (CCA, Ah)
- Resistance measurement (general circuits)
- Data storage and comparison between tests
Included items
- 1 × insulation resistance tester EV001
- 1 × USB-C charging cable
- 1 × set of test leads with alligator clips
- 1 × protective carrying case










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