Easy voltmeter-to-charge-port cable

June 28, 2010 · 0 comments

This cable is easy to make and lets you connect a voltmeter to the charging connector of your electric bike batteries. It’s handy to take a reading of the state of the batteries before and after riding by just plugging this into your charging connector and measuring the voltage.

A small voltmeter could be mounted on the handlebars and the cable routed along the top tube. That way you would be able to monitor the exact voltage while underway. There are far more sophisticated meters available to monitor energy use but they are more expensive too. Just reading battery voltage is better than nothing or relying on LEDs.

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