High-Precision 4-Wire YR1035+ Battery Internal Resistance Tester

Ultra-Accurate Measurement
– Professional-grade 4-wire Kelvin sensing eliminates lead resistance errors for precise readings (±0.5% accuracy) on Li-ion, LiFePO4, and lead-acid batteries (0.01mΩ-30Ω range).
Wide Voltage Compatibility
– Safely tests batteries up to 100V, ideal for EVs, solar storage, industrial packs, and consumer electronics with built-in overvoltage protection.
Rugged & Reliable
– CNC-machined aluminum alloy casing with anti-slip silicone grips ensures durability for fieldwork, labs, or production line QA.
Fast & User-Friendly
– 0.15ms response time with OLED display and one-button operation, streamlining maintenance diagnostics or bulk battery sorting.
Global Wholesale Advantage
– Direct factory pricing for bulk orders, backed by certified quality control and worldwide logistics support.