1.  How long will a Duffy travel using batteries?

With the single battery pack, smaller Duffy’s will go for 3.5 hours, averaging just above 5 mph, for 17.5 miles (assuming calm winds and no current). Our larger Duffy’s can go slightly faster. Using the double battery pack you can expect to double the time and distance plus an additional 15%.

2.  How do I charge it back up and how long will it take?

The standard built in charger will need 12 hours to fully charge the single battery pack.  It only requires approximately 7 hours to recharge to 75%.   The twin battery packs will require double the time to charge. Our optional high-output built-in charger can cut charging times by almost half.

3. What is the lifetime of a battery pack or how often do I need new batteries?

The batteries we use as standard equipment have a life of over 800 cycles. Depending on how well you maintain (keep charged and full of water) it can even last up to 1,200 times.  The battery’s lifetime also depends on how far down you take the charge on your typical outing or cruise.  Discharging to 100% will severely cut your cycles down by more than half.   Conversely, if you don’t go below half charge on your normal run time, the batteries will cycle many more times than they are advertised.  We have customers tell us they have had batteries last 10 years, but most replace theirs after about 5 or 6 years.

4.  What about thrust and power?  What happens if it gets really stormy and windy?

Duffy’s are very capable of handling winds up to 40 mph in protected waters.  It is not advisable to go out in large open waterways or oceans in heavy winds.  Duffy’s are for harbors, bays, and small lakes.  To the best of our knowledge, in the forty years making Duffy’s, we can’t remember a single customer demanding their money back because their boat lacked power or speed.

* Extra battery pack is not available on the Duffy 14

5.  I’ve purchased my Duffy and just took delivery, how do I set it up?

Duffy’s are specially packed at the factory before they leave so that they can travel safe and efficiently to you!  Every Duffy Electric Boat is packed with care and is easy to rig and setup once it has arrived.  We have created both a video and PDF manual to show you the best way to get setup and out on the water.

Click here to watch the video.

Click here to download our Rig-A-Duffy manual.