Duffy Boat Battery

Duffy Boat Battery Replacement for San Diego, Mission Bay, San Marcos and Oceanside. Free Local Delivery

duffy boat battery We are often asked which 6 volt deep cycle battery is best for the electric Duffy boat or Electracraft.
What people want to know is what battery will last the longest and not fail when underway.  Truth is that several lead deep cycle battery manufacturers produce good batteries for the electric boats but the most common 6 volt the  for Duffy boat is the Trojan T-105 battery. The T-105 has a history with us at least, of having a life of 6-7 years with great maintenance and care*.
Lithium deep cycle batteries are on the market and we offer them as a replacement as well.

#1 Choice Historically by Duffy Boat Owners – Duffy Boat Trojan 6 Volt Deep Cycle Battery for Duffy Boat Battery Replacement. Free Local Delivery

Trojan battery has been doing this a long time and some of their highlights are:

  • Do not use high speed production process for plate mfg.
  • Produce Cast grids with heavy Wire and Frame design.
  • Maxguard Advanced Design Separator
  • Use proprietary Alpha Paste on each Grid.
  • Longer cycle life than Costco batteries.
  • Reduced water consumption
  • Less battery maintenance
  • Mfg in Georgia
  • Direct Replacement for Duffy Mileage Master Trojan Battery

Duffy Boat BatteryCurrent battery *Price for 6 volt Trojan T-105 Batteries are $158 ea *(Cores are required to void core charge of $20) Delivery in San Diego is free. Some docks are difficult to wheel a cart down without having to off-load the batteries to get to the boat. Please call.  We also offer installation for a fee. Note, if your Duffy or electric boat has a battery watering system tell us when ordering

Trojan T-105 6 volt battery specs
Rate of Discharge:447 min. @ 25 Amps | 115 min @ 75 Amps
Amp Hours {AH}:225 AH  at 20 Hour Rate
Weight:62 Lbs
Dimensions {L x W x H}10 ⅜ in x 7 ⅛ in x 10 ⅞ in
Cycle Life:650 Cycles to 80% DOD

NEW PRODUCT FOR DCB – SEBANG GLOBAL

SeBang Global has produced an excellent 6 volt GC2 battery for many years and it rivals the T-105 for less money.
An Economical 6 Volt Duffy Boat Battery – Rocket Global Battery
Produced in South Korea by SeBang 210 amp hour

duffy boat battery san diegoBattery watering systems work with the SeBang Global battery for Duffy boats.

Current battery *Price for 6 volt SeBang Global Batteries are $110 ea *(Cores are required to void core charge of $20) Delivery in San Diego is free. Some docks are difficult to wheel a cart down without having to off-load the batteries to get to the boat. Please call.  We also offer installation for a fee. Note, if your Duffy or electric boat has a battery watering system tell us when ordering

Rate of Discharge:474 min. @ 25 Amps | 122 min @ 75 Amps
Amp Hours {AH}:210 AH  at 20 Hour Rate
Weight:63 Lbs
Dimensions {L x W x H}10 ⅜ in x 7 ⅕ in x 10 ⅝ in
Warranty2 year

 

 

Duffy Boat Battery Guide:

  • For the Duffy 22′ Cuddy Cabin Sixteen 6-volt deep cycle marine batteries (16) to create the 48 volt DC motor
  • For the Duffy 22′ Bay Island Sixteen 6-volt deep cycle marine batteries (16) to power the 48 volt DC motor
  • For the Duffy 21′ Sun Cruiser Eight 6-volt deep cycle marine batteries (8) to power the 48 volt DC motor
  • For the Duffy 21′ Old Bay Eight 6-volt deep cycle marine batteries (8) to power the 48 volt DC motor
  • For the Duffy 18′ Snug Harbor Eight 6-volt deep cycle marine batteries (8) to power the 48 volt DC motor
  • For the Duffy 16′ Back Bay Eight 6-volt deep cycle marine batteries (8) to power the 48 volt DC motor
  • For the Duffy 16′ Sport Cat (Tri-Cat) Eight 6-volt deep cycle marine batteries (8) to power the 48 volt DC motor

Free local delivery in San Diego is available for all Duffy Boat Battery Orders. Some docks will have limited delivery due to their design. We will then deliver to the driveway.
 Duffy boat installation is available for following rates.
$120  flat
rate for up to eight 6 volt Duffy Boat Batteries. Again, difficult docks increase labor fee.
$250 for Sixteen Duffy Boat Batteries that have eight per side.
$300 for Sixteen batteries down the middle.
 A convenient Duffy Boat watering system is available and can be installed when we deliver your batteries. Flooded lead-acid batteries are used to power the Duffy Boat’s 48 volt electric motor . When these batteries are recharged, a chemical reaction called gassing takes place. As a result, batteries lose water. It is essential to replace this water to maintain the correct electrolyte level. Failure to do so causes irreparable damage to the battery. Ordinarily, it is necessary to open each cell and add water manually. This procedure is time-consuming and has some inherent risks, such as overfilling and acid splash. A single point watering system eliminates these problems and makes the entire procedure much safer and more efficient.

Free local delivery is available for two or more Duffy Boat Battery Orders.
Orange County Duffy delivery fee $150
 Duffy Boats use the same 6 volt deep cycle batteries used in golf carts (GC2) For Duffy Boat battery replacement, we supply Trojan Battery (mfg in USA) US Battery (mfg in USA) and Centennial Brand 6 volt Deep Cycle. Which Duffy Boat Battery is Best?  A battery is only as good as the parts it is constructed with.  Over time, a battery will lose its ability to hold a charge and is damaged by consistent heat and vibration.  Choose a deep cycle battery manufactured in the United States like Trojan Battery and US Battery. Duffy Boat Battery Guide & FAQ How Many Hours Will a Duffy Travel on a Fully Charged Set of New 6v Batteries? Typically 3 1/2 hours running at moderate speeds – 5mph. How do the duffy batteries charge? The Duffy Boat battery pack is recharged with a on-board charger that is designed to shut off when the batteries are charged.

 

Lithium Deep Cycle Batteries for Duffy Boats?

Customers are asking if a 36v or 48v lithium battery designed for golf carts will work in a Duffy or electric boat? Short answer is yes when the following items are addressed to make the conversion from lead acid to lithium

  • Lithium batteries are lighter, so added weight will be added to balance the boat
  • Replace or adjust charging system for lithium batteries

Lead acid batteries are a reliable energy storage product have not changed for more than fifty years and require monthly watering service.

Benefits to converting a Duffy boat from lead acid battery to lithium battery would be the longer battery cycle life, low maintenance and better power duration in comparison.

What is a battery cycle? A cycle is the process of fully charging and discharging a battery. Typically lead acid batteries cannot be cycled below 50% depth of discharge. If you go lower than 50% you will significantly shorten the lifespan of the battery. LFP batteries can be discharged nearly 80% to 90% depth of discharge and have thousands of cycles.

BMS stands for battery management system, this is the brain of adeep cycle lithium battery. The BMS protects the lithium cells from getting damaged in several scenarios. From low or high voltage, low or high temperatures, or if there is a short in the system. The BMS will shut off the battery to protect the li-ion cells and the user of the battery from unsafe operating conditions. The BMS also regulates the amount of power you can take out of the battery.

A LFP BMS also keeps all of the cells in balance. At the top of each charge cycle, the BMS reduces the charging rate in cells that have been topped off first, letting the rest of the cells catch up. This ensures that the cells are always in balance, and maintains the quality and efficiency of the pack.