Sealey BT105 Digital Battery and Alternator Tester

About this tool

The Sealey BT105 Digital Battery and Alternator Tester is a professional diagnostic tool designed for accurate testing of 12V automotive batteries, cranking systems and alternators. This compact digital tester delivers precise results without heat or sparks, making it a safe and reliable choice for vehicle diagnostics. The device features a clear LCD screen that displays test results after you input the battery rating from the battery label. With comprehensive coverage of multiple rating systems including CCA, BCI, CA, DIN, EN, GB, IEC, MCA, and SAE, this tester accommodates a wide range of battery specifications from 100-2000 CCA depending on the standard. The unit requires no internal battery and can test batteries with residual charge as low as 8V, ensuring diagnostic capability even with severely depleted batteries. PC connectivity adds professional functionality, allowing results to be printed via the included software compatible with Windows 7, 8, and 10. This feature is particularly valuable for workshops maintaining service records or mobile mechanics documenting customer battery conditions. The tester is supplied complete with PC software, instruction manual and protective storage pouch, with the unit weighing just 0.35kg for convenient portability. Features and Benefits: • Tests battery condition, cranking performance and alternator output in one device • No heat or sparks during testing for safe operation • Works with batteries down to 8V residual ch

Retailer description · Tooled Up · Observed 12 Oct 2026. Check the retailer’s listing for full specifications and contents.