DEAL STACK - Digital Automotive Car Battery Tester + 50% Coupon

I found this Amazon deal stack.

It is for a Digital Automotive Car Battery Tester.

There is a discount code LYGUTQW4 plus there's a 50% coupon you can combine on top.

This will reduce it from £39.99 to about £19.99.

• 【Automotive Car Battery Tester】KAIWEETS KVB01 alternator tester works on all 12V and 24V batteries with 100 to 2000 CCA, including normally flooded, lead-acid batteries, AGM flat plate/spiral, EFB, and GEL, offering optimum performance; support the starting and charging system test, as well as the generator and starter test.
• 【4 Testing Function】With this digital battery tester, you can check the total condition including Battery & Cranking & Charging & Loading Test. Applied with the latest testing algorithm, the tester will get the results in seconds, such as State of Health, State of Charge, the Internal Resistance and the testing Conclusion.
• 【Fast & Precise】Equipped with the latest technology, it has the extreme precision of test error value within ±2%, provides reliable results within seconds; This battery analyzer can automatically record the last test results without the need to retest from scratch. Accurately capture battery state to avoid early battery failures & unnecessary maintenance task.