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Under $20 General Purpose Battery Testers

Shop the best prices on 4,601 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 Tcgg, Jtgg, 9eight5 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
$14.95
BT189 9V Battery Tester AA AAA Universal Household LCD Digital Display Button Cell Battery Tester Power Bank Detector Tool
$15.95 Save $10.00 RRP: $25.95
2pcs Battery Checker Tester Battery Capacity Tester Battery Checker Battery Tester Checker
$12.95 Save $51.05 RRP: $64.00
Battery Tester with Meter Electric Voltage Tester for AA AAA C D N Button Cell Batteries Battery Tes
$17.95 Save $7.00 RRP: $24.95
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
Universal Battery Tester, Digital Battery Tester, for AA AAA C D 9V 1.5V Keyless Batteries Battery Voltage Tester
$13.95 Save $7.00 RRP: $20.95
Feature: 1. Battery Tester: Widely applicable to various batteries, including but not limited to C,
$17.95 Save $6.00 RRP: $23.95
KOWSI USB C Tester Power Meter,Digital Multimeter with Large Color Screen,Voltage and Current Tester for Charger and Power Bank
$14.95 Save $15.00 RRP: $29.95
KOWSI USB Ammeter Multi-Function Digital Display DC Voltage Ammeter Power Meter Cell Phone Charging Tester
$16.95 Save $16.00 RRP: $32.95
Lithium Battery/Iron Lithium/Lead-Acid Battery Group Power Percentage Indicator Board DC5-30V Battery Power Indicator
$7.95 Save $4.00 RRP: $11.95
MECHANIC F018 Battery Active Panel Fast Charge Detection Board for Android Phone Battery Activation
$14.95 Save $14.00 RRP: $28.95
LCD Battery Tester Battery Checker for AA AAA C D 1.5V 9V Small Batteries
$21.95 Save $10.00 RRP: $31.95
USB color LCD voltmeter, ammeter, multimeter charger, USB tester (blue)
$12.95 Save $19.00 RRP: $31.95
RC CellMeter-8 2-8S Battery Capacity Voltage Test Meter for LiPo Life Li-Ion NiMH Nicd Cell Meter
$17.95
55inn1 Intelligent Digital Battery Meter Battery Capacity Checker with LCD Display ESC / PPM Tester RC Battery Meter
$16.95
LCD Liquid Crystal 8-100V Voltmeter Battery Car Power Detection Digital Lithium Battery Capacity Display Module,A
$10.95
Digital Battery Capacity Gauge Tester Universal D C N AAA AA 9V 1.5V Button Cell Analyzer
$19.95 Save $11.00 RRP: $30.95
5X BT-168 PRO Battery Capacity Tester Digital Battery Checker Plastic Portable Cell Tester for AA 1.5V 9V
$20.95
5X Electric Drill Battery Indicator LED Display for Makita 18V /21V Lithium Batteries 18650 Capacity Visual Tool
$11.95
2X PC 20 24 Pin Power Supply Tester Checker LED for PSU ATX SATA HDD Meter Measuring 12V 5V 3.3V
$17.95
3X USB Resistor Dc Electronic Load with Switch Adjustable 5V1A/2A/3A Battery Voltage Discharge Resistance Tester
$13.95
2X BT168 Pro Digital Battery Tester Volt Checker for AA AAA 9V Button Multiple Size Battery Tester Voltage Meter Tools
$13.95
3X Mini LED Digital Voltmeter Monitor Panel Meter Volt Voltage Tester Reverse Connection Protection 12V-80V Blue
$17.95
2X 18650 Li-Ion Lipo Lithium Test 7-55V Acid Battery Level Indicator Tester LEDDisplay Meter Module,D
$13.95
4X ZB2L3 18650 Battery Tester External Load Discharge Type 1.2-12V Battery 18650 Equal Capacity Tester Discharge Meter
$17.95
USB Battery Capacity Tester Adjustable Constant Current Electronic Load 15W Resistance Charging Testerster
$13.95
Acid Lithium Battery Voltmeter Battery Capacity Tester LCD Digital Voltage Tester Module USB Battery Level Indicator
$11.95
Compact Household Battery Checker, Universal Battery Tester for Quick Testing of AA, AAA, C, D, 9V, 2.5V Button Cell and All Household Batteries
$17.95 Save $7.00 RRP: $24.95
BT168 Pro Digital Battery Tester Volt Checker for AA AAA 9V Button Multiple Size Battery Tester Volt
$9.95
Small Hearing Help Battery Checker with Build In Storage Holds Up To 3 Batteries Battery Meter for Accurate Testing Multicolor
$19.95
LTC4150 Coulomb Counter Battery Level Detection Module Current Detection Sensor Module
$10.95 Save $5.00 RRP: $15.95