Best car battery load tester for 12V cars (100A)

The car battery load tester CBLT–100 is a true 100A 12V tester for lead-acid car batteries. In just 10 seconds, it shows voltage stability and cranking readiness—ideal for Indian workshops and garages. If you want a reliable digital meter at a practical price, this model delivers rugged build and consistent results. For more details, see our Battery Tester hub and Contact page.

Pros & Cons

  • Pros: Quick pass/fail, durable build, clear digital reading, affordable.
  • Cons: 100A is light for 70Ah+ batteries; not for lithium or non-12V systems.
  • Type: Car battery load tester (12V)
  • Load: 100A for 10 seconds (duty: 10s ON, ~60s cool)
  • Display: Digital voltage readout
  • Best for: 30–40Ah (perfect); 50–60Ah (acceptable)
  • Not for: Lithium/LiFePO4; 70Ah+ (use 200–300A)
  • Price validity: ₹1,950 + GST, valid till

How to choose load (quick rule)

Load ≈ 3× Ah for 10 seconds. 30–40Ah → ideal with 100A. 50–60Ah → acceptable. 70Ah+ → 200–300A recommended.

Voltage verdict table

ConditionVoltage @ 10sVerdict
Good≥ 10.0 VBattery healthy
Borderline9.0 – 9.9 VReplace soon
Bad< 9.0 VReplace now
Safety: Avoid testing right after charging or running the engine. Ensure good clamp contact; cables and vents may warm slightly during a 10-second load.

How to use

Press and hold LOAD for 10 seconds. Read the meter while LOAD is ON, then release and allow cooling (~60s). For more guides, visit our Help & Tips.

Shipping & Returns (India)

Dispatch: Delhi · Delivery: 3–7 business days Pan-India · Returns: 7-day window by mail; free return as per policy.