This tester could test relay condition,whether relay on or off. (Market products do not have this function. 1x Relay tester. Wide range of relay compatibility: support for 5 different foot type of relay, more than 20 kinds. ).
eBay
HIGH POWER RC Car Lipo Battery 7.4V 3600mAh Max 60C For Wltoys 12428 12423 RC Car Upgrade part 2s 7.4v Battery for feiyue 03 Q39
Aliexpress UK
Electronic Automotive Relay Tester Battery Checker fit Cars Auto 12V New UK. 1 x Relay Tester. The coil resistance is preferably above or equal 20 ohms. If the relay is abnormal the red LED will light, it's normal the green LED will light.
eBay
18650 7.4V 2000mAh Rechargeable battery Suitable for Remote control Car Boat Off-road vehicle High-speed car High Rate Batteries
Aliexpress UK
LED Indicator Light Car Battery Checker Electronic Test Car Relay Tester Diagnostic Tools Automotive Accessories Universal 12V. The LED Indicator Car Battery Checker and Relay Tester is an essential tool for automotive diagnostics.
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7.4V 5000mah Battery Charger MN82 Remote Control Car Battery MN128 MN78 LC79 for Watch Gesture Sensing Twisted RC stunt car SM3p
Aliexpress UK
1 x Relay Tester. The coil resistance is preferably above or equal 20 ohms. If the relay is abnormal the red LED will light, it's normal the green LED will light. Automotive relays test tool. Color: Black & Red.
eBay
1/2/3/5/10pcs7.4v 1300mAh rechargeable battery for Watch Gesture Sensing Twisted RC stunt car 18650 7.4v battery FOR RC Cars
Aliexpress UK
1 x Battery Tester. Test for 6V-12V batteries and charging system output (<16V). Features:LCD Display,Bad Cell Detection. Designed with handle, it is very convenient to carry.
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502030 Li-polymer Battery 3.7V 250mAh Lithium Polymer Rechargeable Batteries Ph-2.0mm for Bluetooth Headset Car Recorder Car Toy
Aliexpress UK
When testing the generator charging system. BT-171 12V Digital Battery Tester. after the correct connection.
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1/2units Zeee 5200mAh 7.4V 50C Lipo Batteries for RC Car 2S RC Lipo Battery with T Plug For RC Drone Car Truck Helicopter Boat
Aliexpress UK
1 x Relay Tester. The coil resistance is preferably above or equal 20 ohms. If the relay is abnormal the red LED will light, it's normal the green LED will light. Automotive relays test tool. Color: Black & Red.
eBay
SM4P 14500 7.4V 500mAh Li-ion Battery For EC16 remote control Toys Cars Spare Accessories RC Car Model High-Rate Lithium Battery
Aliexpress UK
This tester could test relay condition,whether relay on or off. (Market products do not have this function. 1x Relay tester. Wide range of relay compatibility: support for 5 different foot type of relay, more than 20 kinds. ).
eBay
MN82 Remote Control Car Battery MN128 MN78 7.4V 1500mah Battery Charger LC79 for Watch Gesture Sensing Twisted RC stunt car SM3p
Aliexpress UK