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APPENDIX
promariner.com
Choosing a ProNauticP Charger
ProNauticP Series chargers are designed for cuddies, cruisers, sailboats, yachts and commercial /
larger fishing boats. Boats in this class typically have a common ground and are set up for shore
power AC and sometimes include the use of a generator and/or an inverter on board. A 12V DC
common ground system is typical for most boats, however larger boats and commercial boats may
be utilizing a 24V, 32V or 36V common ground DC system.
Method 1 (preferred):
When choosing a dry mount charger, the following information will aid in the proper selection:
1. How many low voltage lights are on-board and total estimated amperage
required when they are all on?
(Good rule of thumb is 1 amp per bulb)
2. How is the boat used. If there is a lot of use while at the dock, what is the total
estimated DC amp draw if at the dock with all lights and DC appliances on?
3. What is the DC voltage system onboard?
(12V DC or 24V DC or 32V DC or 36V DC)
4. Is there an inverter being used? If yes what is the wattage rating and DC input
amps required?
5. What is the number of batteries and group size of each battery?
For example: After answering the above you find you have 12V DC system with 18 DC lights on
board and a VHF radio you like to leave on with a satellite TV for entertaining, you would find your
DC amp load would be approximately 20 amps. Add an additional 10 amps for charging capacity
and select a 30 amp charger. This would be a Pronautic1230P as shown in the chart below.
Method 2:
If you are not able to answer all the questions listed in method 1, you may make a selection
by simply understanding the number and sizes of each battery on board and compare it to
the battery group size list on the right. Select a recovery time that is suitable for your needs.
Batteries are categorized into "Group" size designations and each group size has an average
number of amp hours (AH) available in each battery classification. The combined total of all
batteries to be charged provides your total amp hours.
Example: Two group 27 batteries (100 AH each) and One group 8D
(225 AH) totals 3 batteries with a combined total of 425 AH
(100 + 100 + 225 = 425).
ProNauticP Series
Model Part # Volts
Charger
Output
No. of
Batteries Cycles
Total number of All Battery Amp Hours On-board
Size (LxWxH)
Weight AC In
100–199 200–299 300–399 400–599 600–799
ProNautic 1210P
63110
12 10 Amps 2 Bank 50/60
5 Hrs
10 Hrs
10.25"x8.5"x3.5"
5 lbs
100-260
ProNautic 1215P
63115
12 15 Amps 3 Bank 50/60
3 Hrs
6 Hrs
10 Hrs
10.25"x8.5"x3.5"
5 lbs
100-260
ProNautic 1220P
63120
12 20 Amps 3 Bank 50/60
5 Hrs
7 Hrs
10 Hrs
10.25"x8.5"x3.5"
5 lbs
100-260
ProNautic 1230P
63130
12 30 Amps 3 Bank 50/60
3 Hrs
5 Hrs
8 Hrs
10.25"x8.5"x3.5"
5 lbs
100-260
ProNautic 1240P
63140
12 40 Amps 3 Bank 50/60
5 Hrs
8 Hrs
11 Hrs 10.25"x8.5"x3.5"
5 lbs
100-260
ProNautic 1250P
63150
12 50 Amps 3 Bank 50/60
4 Hrs
6 Hrs
9 Hrs
12.25"x8.5"x3.5"
7 lbs
100-260
ProNautic 1260P
63160
12 60 Amps 3 Bank 50/60
3 Hrs
5 Hrs
7 Hrs
12.25"x8.5"x3.5"
7 lbs
100-260
ProNautic 2420P
63170
24 20 Amps 3 Bank 50/60
4 Hrs
6 Hrs
8 Hrs
10 Hrs 12 Hrs 10.25"x8.5"x3.5"
5 lbs
100-260
ProNautic 2430P
63180
24 30 Amps 3 Bank 50/60 3 Hrs
4 Hrs
6 Hrs
8 Hrs
10 Hrs 12.25"x8.5"x3.5"
7 lbs
100-260
The Battery Charger Selector Guide is meant to be used as a guide to help determine the right charger for your needs. All charge times given are
using the longest time it would take to charge a dead (50% discharged) set of batteries. In most cases, your set of batteries will recharge much faster.
See battery group size table below.
Battery Group Size
GROUP 24 Average of 85 Amp Hours
GROUP 27 Average of 100 Amp Hours
GROUP 31 Average of 115 Amp Hours
GROUP 4D Average of 165 Amp Hours
GROUP 8D Average of 225 Amp Hours