The Expert V-300 Voltmeter features an LED bar graph display. 10 LEDs (3 green, 4 yellow, and 3 red) are displayed in a bar graph for easy viewing on the current state of charge of your receiver battery pack. Each LED's color corresponds to that of a stoplight: green for go, yellow for warning, and red for stop-do not fly before recharging. Switch selectable, you can test both 4-cell and 5-cell receiver packs under a 300 mA current load to simulate the typical operating current.
Using the V-300 is very simple: Move the slide switch to correspond to the appropriate voltage level of the pack being tested (4.8V 4-cell or 6V 5-cell) and plug the V-300's universal connector into the charge jack. In 10 seconds you have an accurate and stable reading, so at a glance you know if you can safely fly.
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