The Lightning Power Battery Cell Gauge is designed to measure the volts of each cell of your lithium pack. It is simple to use. Plug in a 2-3 cell pack through the balancing connector and read the Liquid Crystal Display (LED). The decimal point represents what volt each cell is reading (refer to the label on the gauge). The connector has 2.5 mm pin spacing. If you have balancing connectors that have 2mm pin spacing, use the separately available adapter. To test packs with 4-12 cell, simply move the gauge over to the next row of pins (see fig. 1). If you plug in the gauge and the LED does not light up, just reverse the connection. You can not damage the gauge by reversing the polarity. Remember to remove the gauge from the battery after use to prevent slow discharge of the battery.

Mini Servo Adjuster and Tester from DN Power. Useful for testing and adjusting the radio control pulse width of a transmitter at any channel and also testing and adjusting servos. Operating wattage range: 4.8-7.2 volts. The DN power servo tester is a must have for proper calibration and will save you hours in troubleshooting and setup time.

This E Sky Digital Battery tester is inexpensive and will give out and accurate reading of all DC batteries ranging from 4 volts to 13 volts DC. The checker comes with generic pin plugs so it is easy to hook onto wires or onto alligator clips. Very accurate with a large LCD display this battery checker will always keep you informed.

It is important to know the head speed of a helicopter in the hover and fast forward flight to be able to maximize the set-up of the engine and blade pitch. Until now, this had always been a costly or dangerous exercise trying to hover the helicopter over an optical tacho on the ground. With the Synchro Meter, your helper simply views the flying helicopter through a window on the meter and adjusts the dial until the blades appear stationary. The in-flight RPM can be read off the large format LCD screen. Suitable for all two blade helicopters and capable of reading head speeds from 1000-2500 rpm.

Point. Push a button. Read the results one second later! It's that easy to check temperatures with the FlashPoint infrared temperature gauge. This infrared thermometer can help you detect and correct potential engine problems early for a long, powerful life... and make sure that your sealing iron is set at the best heat for your covering film. Carry it with you for use anytime, anywhere to check combustion engines, electric motors, battery packs and much more! FEATURES: Wireless for safe and accurate readings without touching the heat source-simply point, push a button, and read the results. Palm sized 1.13 ounce reads wide temperature range from -27 deg to +428 deg Farenheit (-33 deg to +220 deg Celsius). Special mode settings allow user to find, hold, and display minimums and maximums of fluctuating temperatures to provide the most accurate information. Auto-off timer preserves battery power by shutting down unit after 15 seconds if not used. Large LCD for easy viewing. Replaceable 3V CR2032 lithium battery available at jewelry and camera counters of major retail stores. INCLUDES: One Duratrax Flashpoint Infrared Temperature Gauge with handy wrist strap and lithium battery included.