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[DG11] Power issues with my Dragonfly 7
05-12-20, 02:12 PM (This post was last modified: 05-14-20 09:03 AM by Derek - Raymarine - Moderator.)
Post: #1
[DG11] Power issues with my Dragonfly 7
Having trouble with my Raymarine Dragon Fly 7 graph on my 16ft boat. I have it wired with an inline fuse with heavy wire directly to the starter battery that has the 40hp motor, bilge, and lights running on it. Problem is, every time I throttle up or down I lose power to the graph. It turns back on when the motor is off or idle.

I don’t have room for another big battery but would like to know if there is a more powerful starter battery anyone can suggest that would solve the issue. I found some small batteries that could fit that are suggested for kayaks but would like to avoid another battery if possible.

Any suggestions or ideas that would fix the problem?
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05-14-20, 09:06 AM
Post: #2
RE: [DG11] Power issues with my Dragonfly 7
Hi Thegolfpro313

Thank you for your enquiry,

The most likely issue is not lack of voltage but too much! The Dragonfly is protected against overvoltage and I suspect when the engine is revv'd the output voltage from the engine alternator is much higher than the range accepted by the Dragonfly, or possible is very spikey from a voltage point of view and the Dragonfly is shutting down to protect itself.

Try fitting a power supply conditioner in the power lead to the dragonfly to smooth the voltage and prevent the voltage becoming too high for the unit to handle.

Regards

Derek
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