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Under $20 General Purpose Battery Testers

Shop the best prices on 5,881 great value under $20 general purpose battery testers. Shopping for general purpose battery testers is easy with Fruugo, with SALE discounts, offers and savings on ZENGO, Aura, Tcgg and more. Buy general purpose battery testers online safely with Fruugo, with secure payment and fast shipping to Australia.

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1 - 32 of 3,200
12V 24V 48V 60V 84V Waterproof IP67 Battery Capacity Voltage Meter with Backlight LCD and Low-Voltag
$15.95
Universal Battery Tester Checker, Digital Battery Capacity Level Tester for C AA AAA D N 9V 1.5V Button Cell Small Mini Batteries TTMA
$19.95 Save $26.00 RRP: $45.95
For M12 Converter Adapter 30A Fuse for Milwaukee 12V Lithium Battery External Power Supply DIY Connector Bracket Holder
$16.95 Save $8.00 RRP: $24.95
4X ZB2L3 18650 Battery Tester External Load Discharge Type 1.2-12V Battery 18650 Equal Capacity Tester Discharge Meter unbrand
$14.95 Save $8.00 RRP: $22.95
BT-168 AA/AAA/C/D/9V/1.5V batteries Universal Button Cell Battery Colour Coded Meter Indicate Volt Tester Checker BT168 Power
$11.95
Battery Tester, Universal Battery Checkered Small Battery Testers for AAA AA C-D 9V 1.5V Button Cell Household Batteries Black
$0.95
Battery Tester with Meter Electric Voltage Tester for AA AAA C D N Button Cell Batteries Battery Tes
$18.95 Save $6.00 RRP: $24.95
BT189 9V Battery Tester AA AAA Universal Household LCD Digital Display Button Cell Battery Tester Power Bank Detector Tool
$15.95 Save $11.00 RRP: $26.95
2pcs Battery Checker Tester Battery Capacity Tester Battery Checker Battery Tester Checker
$12.95 Save $56.05 RRP: $69.00
1Pcs DC Voltage Meter Panel, 0.56″ Digital LED Display Waterproof High Precision Voltmeter Voltage Current Display(DC5-130V-Green) 7V4MM
$20.95 Save $21.00 RRP: $41.95
Digital Display Voltmeter Display, 3 Wire DC 0.56 Inch LED Digital External Display Module Volt Voltage Meter DC 0‑99.9V(Blue) I99SY
$22.95 Save $20.00 RRP: $42.95
1Pcs DC Voltage Meter Panel, 0.56″ Digital LED Display Waterproof High Precision Voltmeter Voltage Current Display(DC5-130V-Red) K0FW0
$20.95 Save $21.00 RRP: $41.95
Digital Display Voltmeter Display, 3 Wire DC 0.56 Inch LED Digital External Display Module Volt Voltage Meter DC 0‑99.9V(Red and Blue) TN4OA
$21.95 Save $21.00 RRP: $42.95
Digital Display Voltmeter Display, 3 Wire DC 0.56 Inch LED Digital External Display Module Volt Voltage Meter DC 0‑99.9V(Red and Blue) 018OB
$21.95 Save $21.00 RRP: $42.95
Digital Battery Tester Lcd Display Button Cell Battery Capacity Check Detector Capacitance Diagnostic Tool (1pc)
$16.95
Button Cell Battery Checker Power Volt Checker, Household Battery Tester, Repair Tools
$16.95 Save $5.00 RRP: $21.95
Battery Tester Universal Household Capacity Checker for D C AA AAA N 9V Button Cell
$21.95 Save $26.00 RRP: $47.95
Data Cable Detection Board, Double Headed Type C, USB Cable Tester Board, Compatible IOS, Android Phone, Support USB 3.1
$19.95 Save $8.00 RRP: $27.95
IPS HD Screen USB Tester Voltmeter Ammeter TYPE-C PD/QC2.0/QC3.0 Fast Charge Detection Voltage Current Capacity Tester A
$14.95 Save $6.00 RRP: $20.95
DC Power Meter 60V 100A Digital Watt Voltage Monitor Battery Load Balancer Checker
$21.95 Save $23.00 RRP: $44.95
Universal 1.5V 9V Battery Tester Digital Display Battery Checker for AA AAA C D Batteries (Black Red)
$17.95 Save $71.05 RRP: $89.00
Loud hailer Lipo battery voltage alarm display Checker 2-3S LED display for RC Helicopter Quadcopter car battery
$6.95 Save $3.00 RRP: $9.95
2025 Lipo Battery Checker Lipo Battery Tester Lipo Battery Voltage Tester Lipo Voltage Checker
$13.95 Save $14.00 RRP: $27.95
2025 ANENG BT189 Button Cell Battery Tester Universal Household LCD Display 9V N D C AA AAA Battery Tester Power Bank Detectors Tools
$15.95 Save $16.00 RRP: $31.95
4X Red Led Digital Display Voltmeter Voltage Meter Volt Tester Panel for Dc 12V Vehicles USB 5V2A Output 12.6V Battery
$21.95
2X BT-168 AA/AAA/C/D/9V/1.5V Batteries Universal Button Cell Battery Colour Coded Meter Indicate Volt Tester BT168
$13.95
4X ZB2L3 Battery Tester LED Digital Display 18650 Lithium Battery Power Supply Test Resistance Lead-Acid Capacity
$21.95
Digital Battery Tester LCD Display Accurate Detection Portable Battery Checker for C AA AAA
$7.95 Save $24.00 RRP: $31.95
12V 24V 48V 60V 84V Waterproof IP67 Battery Capacity Voltage Meter with Backlight LCD and Low-Voltage Alarm for Lithium
$17.95
Small Battery Tester Small Battery Tester Volt Checker LCD Display Leveling Monitor Button Battery Checker Black
$16.95
LCD Display USB Tester Multifunctional Current Voltage Battery Capacity Meter Monitor Black
$21.95 Save $12.00 RRP: $33.95
12-84V GY-6G Battery Power LCD Display Voltage Meter Voltmeter with Light Alarm (Green Light)
$16.95 Save $10.00 RRP: $26.95