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Under $20 Vehicle Battery Testers

Shop the best prices on 7,304 great value under $20 vehicle battery testers. Shopping for vehicle battery testers is easy with Fruugo, with SALE discounts, offers and savings on ZENGO, Woosien, Aura and more. Buy vehicle battery testers online safely with Fruugo, with secure payment and fast shipping to Australia.

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1 - 32 of 3,200
Electronic Automotive Relay Tester Kit For Car Auto Battery Checker 12V NEW
$14.95 Save $5.00 RRP: $19.95
12V 24V Vehicle Battery Current Tester with Bright LCD Display LED Light for Automotive Electrical Diagnostics
$20.95 Save $21.00 RRP: $41.95
ANENG Car Relay Tester Voltage Tester Universal 12-24V Car Battery Checker Automotive Electronic Relay Tester LED Light
$20.95
5X Loud Hailer Lipo Battery Voltage Alarm Display Checker 2-3S LED Display for RC Helicopter Quadco
$21.95
RS-550 Motor - Suitable for Micro Power Tools with DC Voltage Range of 12-24V and Speed of 21000 Rpm
$20.95 Save $30.00 RRP: $50.95
ANENG Car Relay Tester Voltage Tester Universal 12-24V Car Battery Checker Automotive Electronic Relay Tester LED Light
$15.95
Autel PowerScan PS100 Electrical Automotive Circuit Tester Tool 6-24V AVOmeter
$17.95
Automatic Constant Temperature Diesel Filter Heater 120W 12V/24V for Cars and Trucks
$19.95 Save $44.05 RRP: $64.00
12V 24V 48V 60V 84V Waterproof IP67 Battery Capacity Voltage Meter with Backlight LCD and Low-Voltage Alarm for Lithium
$15.95
2025 Automotive Test Light with 5-120V LED Digital Voltage Display, Circuit Tester with Voltmeter & Dual Color Polarity Indicator
$19.95 Save $19.00 RRP: $38.95
12V 24V 48V 60V 84V Waterproof IP67 Battery Capacity Voltage Meter with Backlight LCD and Low-Volta
$16.95 Save $6.00 RRP: $22.95
Brushless Motor Tester Electro Car E-Bike Scooter Brushless Motor Controller Tester 24V/36V/48V/60V/
$13.95 Save $45.05 RRP: $59.00
Car Relay Tester Voltage Tester Universal 12-24V Car Battery Checker Automotive Electronic Relay Te
$17.95 Save $7.00 RRP: $24.95
DC18V-60V to 12V Converter 20A 240W Golf Cart 24V 36V 48V Step Down to 12V
$18.95 Save $11.00 RRP: $29.95
Car Relay Tester Voltage Tester Universal 12-24V Car Battery Checker Automotive Electronic Relay T
$20.95 Save $6.00 RRP: $26.95
Battery Capacity Display Voltmeter LED Digital Voltage Meter with Touch-ON OFF Switch Car Motorcycle
$8.95 Save $14.00 RRP: $22.95
Waterproof Lcd Display Digital Hour Meter Inductive Timer For Bike Motorcycle Atv Snowmobile Engine, Black
$8.95 Save $23.00 RRP: $31.95
Car Key ECU Test Coil, Car Induction Signal Detection Card, Automotive Key Lock Chip Antenna Tester, Automatic Ignition Coil Tester for Checking The L
$17.95 Save $11.00 RRP: $28.95
Electronic Automotive Relay Tester Kit For Car Auto Battery Checker 12V NEW
$13.95 Save $6.00 RRP: $19.95
KA2284 Battery Capacity Indicator Power Audio Voltage Level Indicator Red Green LED Voltmeter Volume VU Meter
$16.95
Automotive Relay Automotive Relay Short Circuit Tester
$21.95 Save $21.00 RRP: $42.95
USB Doctor Voltage Current Tester LCD Display Portable for Mobile Phone Power Bank Charger
$19.95 Save $6.00 RRP: $25.95
Electric Battery Display LCD Battery Tester for Testing 2Pcs Durable Plastic
$20.95 Save $8.00 RRP: $28.95
LCD Battery Indicator Vehicle Battery Tester for Testing 2Pcs Assorted Color
$20.95 Save $8.00 RRP: $28.95
Battery Voltage Tester Capacity Monitor Waterproof 48V for Safety
$21.95 Save $6.00 RRP: $27.95
The **High Precision Brake Fluid Tester Pen** is a durable and essential diagnostic tool designed for mechanics and vehicle owners to quickly and
$18.95 Save $16.00 RRP: $34.95
3-36V Automotive Circuit Tester Pen, Car Test Lamp, Vehicle Voltage Tester, Determine the Positive and Negative of the Battery, Auto Electrical Tester
$21.95 Save $11.00 RRP: $32.95
Bm550 Car Battery Tester 6v 12v 24v 100-2000 2ah-220ah Battery System Detect Auto Battery Analyzer Boris
$18.95 Save $3.00 RRP: $21.95
AURA Universal LCD Battery Capacity Voltage Tester Monitor Display Backlit Voltmeter Aura
$17.95 Save $18.00 RRP: $35.95
6V/12V/24V car and truck voltage tester pen
$17.95 Save $8.00 RRP: $25.95
Lead Acid Lithium Battery BMS Capacity Indicator Voltage Meter USB Charger
$15.95 Save $6.00 RRP: $21.95
5PCS 2 In1 1-8S Lipo Battery Voltage Tester, RC Low Voltage Buzzer Alarm, Battery Monitor Checker Te
$16.95 Save $82.05 RRP: $99.00