LJPXHHU B701 Car Battery Load Tester 12V/24V (100–2000 CCA) — Backlit LCD, Starter & Alternator Diagnostics

The LJPXHHU B701 is a handheld battery load tester that quickly evaluates 12V and 24V batteries (100–2000 CCA) and checks cranking and charging systems for accurate, on-the-spot diagnostics.

Whether you're a DIY mechanic, fleet manager or roadside technician, this compact tester gives clear, actionable battery health information so you can tell when a battery needs service, replacement or when the starter or alternator is at fault. Designed for consumer and professional use, it works with flooded, AGM, EFB and gel battery types across cars, trucks, motorcycles, boats and small equipment.

How does the tester determine a battery’s real condition?

The B701 combines voltage measurement, internal resistance analysis and cold cranking amps (CCA) assessment to estimate State of Health (SOH) and State of Charge (SOC). An on-board algorithm interprets these readings to give an immediate pass/fail style evaluation so you don’t have to guess.

• Measures voltage, internal resistance, SOC and SOH.
• Supports 100–2000 CCA range for accurate matching to battery spec.
• Works with flooded, AGM, EFB and GEL chemistries.
• Displays results on a large backlit LCD for easy reading.

Can it identify starter or charging-system problems?

Yes — the device runs cranking and charging diagnostics to separate battery failure from starter or alternator issues. By comparing cranking performance and charging voltage under load, it helps pinpoint whether poor starts are due to a weak battery or another electrical fault.

• Performs cranking tests to assess starter load and battery delivery.
• Runs charging diagnostics to check alternator output and charge behavior.
• Avoids unnecessary component swaps by isolating the root cause.

How reliable and safe is the testing process?

The B701 uses an intelligent chip and optimized algorithms to yield highly repeatable results, and copper-plated alligator clips ensure a stable electrical connection. Built-in protections guard against reverse polarity, short circuits, overcurrent and overvoltage during testing.

• Up to 99.8% testing accuracy reported by the device algorithm.
• Copper-plated clamps for secure contact and reduced resistance.
• Safety protections and sturdy ABS housing for workshop durability.

Is it easy to use across different vehicles and languages?

The interface is designed for speed and clarity: a bright backlit LCD with adjustable contrast plus ten language options makes operation straightforward for users worldwide. It requires no pre-charging — simply connect correctly and power-up to begin testing.

• Large adjustable backlit LCD for clear visibility in varied lighting.
• Ten selectable languages to suit diverse technicians and owners.
• Simple connect-and-test workflow without pre-charging steps.

Who is this for: The LJPXHHU B701 is ideal for car owners, roadside responders, small-fleet operators and home mechanics who need a reliable, portable way to check battery health and diagnose starting or charging faults. It’s appropriate for 12V and 24V systems on cars, trucks, RVs, ATVs, boats, lawn equipment and more when you want fast, actionable results without specialized shop equipment.