FOXWELL BT705 Plus Car Battery Tester | 24V/12V Load Tester 100-2000CCA

FOxwell BT705 Plus: Faster, More Accurate Battery, Cranking & Charging Testing

Meet the FOXWELL BT705 Plus, the upgraded successor to the classic BT705. This all-in-one tester aims to deliver results up to 30% faster thanks to a more powerful processor and refined algorithms. It shines when assessing battery health, starting reliability, and charging performance, helping you identify weak batteries, alternator issues, and potential starting problems before they turn into inconvenient breakdowns or towing costs.

Why the BT705 Plus stands out

Designed for real-world use, the BT705 Plus remains a practical choice for workshops, fleets, and DIY enthusiasts. It balances speed with accuracy, especially when you’re dealing with low-voltage or nearly dead batteries. The device’s processing improvements translate into clearer readings and quicker decisions on the shop floor or in the field.

• Faster results—up to 30% quicker than the original BT705, with refined algorithms.
• Better accuracy on weak or near-dead batteries, helping you spot issues before they escalate.

All-season reliability you can trust

Winter brings extra strain on batteries, but the BT705 Plus is built to handle cold conditions. High-conductivity clamps support accurate measurements even in freezing weather, helping you anticipate cold-start risks and prevent unexpected outages.

• Reliable readings in cold temperatures for proactive maintenance.
• Designed to reduce the chance of cold-start failures and associated downtime.

One tool, three essential tests

There’s no need to juggle multiple devices. The BT705 Plus performs battery, cranking, and charging tests in any sequence and measures key metrics that reveal a battery’s health and a vehicle’s electrical performance. This makes it easier to identify weak batteries, cold-start risks, or alternator problems in one session.

• Battery health metrics: SOH (state of health) and SOC (state of charge).
• Cranking metrics: cranking voltage, cranking time, and CCA.
• Charging metrics: ripple and overall charging performance.

Clear, intuitive use and comfortable testing range

A high-contrast color LCD keeps readings legible indoors or out, and five diagnostic indicators are visible at a glance. The extra-long 5.9 ft cables give you room to work solo, away from the battery, without sacrificing accuracy.

Wide compatibility with responsible design

Works with 24V and 12V systems across cars, trucks, RVs, boats, heavy-duty machines, and tractors. It supports Flooded, AGM, Spiral, and GEL batteries (not lithium). Certified under GRS standards, it’s a practical, eco-conscious choice for ongoing battery care and maintenance.

Note: For in-vehicle testing, ensure all accessory loads are off, the ignition is OFF, and vehicle doors are closed. You’ll enter the rated CCA value as labeled on the battery for more accurate results.