Topdononline via Amazon has Topdon Car Battery Tester AB101 on sale for $21.99 when you clip the 20% coupon and apply promo code: AB101DEAL at checkout. Shipping is free w/ Prime or on orders $25+.
About this item:
- Battery Test: The car battery analyzer shows 5 different results: "Good Battery", "Good-Recharge", "Replace", "Bad Cell- Replace", "Charge-Retest".
- Charging Test: The battery tester checks ripple status, load voltage, and charging system status.
- Cranking Test: The battery is regarded as OK if cranking voltage is higher than 9.6V or abnormal if lower than 9.6V.
- Ripple Test: The load tester tests the charging current ripple to find out whether the diode is normal or not.
- no heat, no spark, no operation risk.
- Highly recommended by Scotty Kilmer and BestReviews.