Romondes via Amazon has for Prime Members: ANCEL 12V Car Battery Tester (BA101) on sale for $35.99 – 25% 'clipped' coupon – 15% 'redeemed' coupon = $21.59. Shipping is free.

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Features:

• Includes quick test, battery test, cranking, and charging tests
• Provides assessments of battery health, voltage, and charge status
• Large LCD display featuring adjustable contrast
• Protection against reverse polarity, short circuits, overcurrent, and overvoltage.
• Supports various battery types (including flooded, AGM, GEL, EFB)