nphilbro
Petty Officer 1st Class
- Joined
- Dec 19, 2011
- Messages
- 304
I'd like to know if I can, and how, to charge my house bank of AGM batteries from my main motor. This stator+rectifier/regulator is rated to 35a and terminal voltage tops out at 14.4v (measured).
My older 25hp kicker/backup-get-home motor has no charging stator.
Please note: house bank is AGM batteries, not Gel Cell
House and starter separated by 1-2-B-Off Perko switch
Starting battery is a simple 800CCA truck starting battery.
I fish my 20ft fiberglass for salmon and halibut, etc off the coast of Washington and battery use is really varied depending on what's being run:
When running the main motor I'm cruising out to the fishing grounds for 60-90 minutes at 3800-4100 RPMs, start battery is topped off very quickly and I don't have much load on it, electronics and maybe 100W in LEDs.
My largest power consumption happens while trolling: 2 Canon Electric downriggers (200ft of line is normal), GPS, Sonar, 100w in high Power LEDs, 5 Amps of USB charging for iPads/phones.
My 12v house bank I have available to use is 390AH total combined with 2x75AH + 4x35AH true deep cycle AGM batteries in parallel. These have been balanced, charged and discharged as a bank but I've only charged them on shore power power with a simple 2amp, 3 stage charger. Fully charged, disconnected from the bank and rested, each battery has 13.12 -13.15v. Because of the space and weight, I'd like to leave 1/2 the bank at home and charge the smaller house bank on the water from the main while the lines are pulled up and we're running 15-45 minutes to new grounds.
Here are the specs on the 35AH batteries:
Cycle Applications: Limit initial current to 10.5A. Charge until battery voltage (under charge) reaches 14.4 to 14.7 volts at 68?F (20?C). Hold at 14.4 to 14.7 volts until current drops to under 350mA. Battery is fully charged under these conditions, and charger should be disconnected or switched to ?float? voltage.
http://www.power-sonic.com/images/p...s/ps_psg_series/12volt/PS-12350_12_Aug_27.pdf
I know there are a lot of things to consider here and voltage dropping too low can cause charging issues, but I don't know the charging profile of this regulator. I considered starting out with a bank of:
1x70Ah with disconnect (to take out of service)
+ 2 x 35ah
+70ah with disconnect (to bring into service) and increase terminal voltage for charge (prefer not to need this one).
If my ocean kicker had a charger I wouldn't worry about it or if I consistently used the same power I'd size to it. But now, I'm stuck carrying an extra 150lbs of battery because I'm afraid to connect them. These are extremely reliable batteries with a lot of output so I much prefer them over the pseudo deep cycle "marine" batteries sold most places.
I think I covered most of the necessary details here. Lol
Any thoughts?
My older 25hp kicker/backup-get-home motor has no charging stator.
Please note: house bank is AGM batteries, not Gel Cell
House and starter separated by 1-2-B-Off Perko switch
Starting battery is a simple 800CCA truck starting battery.
I fish my 20ft fiberglass for salmon and halibut, etc off the coast of Washington and battery use is really varied depending on what's being run:
When running the main motor I'm cruising out to the fishing grounds for 60-90 minutes at 3800-4100 RPMs, start battery is topped off very quickly and I don't have much load on it, electronics and maybe 100W in LEDs.
My largest power consumption happens while trolling: 2 Canon Electric downriggers (200ft of line is normal), GPS, Sonar, 100w in high Power LEDs, 5 Amps of USB charging for iPads/phones.
My 12v house bank I have available to use is 390AH total combined with 2x75AH + 4x35AH true deep cycle AGM batteries in parallel. These have been balanced, charged and discharged as a bank but I've only charged them on shore power power with a simple 2amp, 3 stage charger. Fully charged, disconnected from the bank and rested, each battery has 13.12 -13.15v. Because of the space and weight, I'd like to leave 1/2 the bank at home and charge the smaller house bank on the water from the main while the lines are pulled up and we're running 15-45 minutes to new grounds.
Here are the specs on the 35AH batteries:
Cycle Applications: Limit initial current to 10.5A. Charge until battery voltage (under charge) reaches 14.4 to 14.7 volts at 68?F (20?C). Hold at 14.4 to 14.7 volts until current drops to under 350mA. Battery is fully charged under these conditions, and charger should be disconnected or switched to ?float? voltage.
http://www.power-sonic.com/images/p...s/ps_psg_series/12volt/PS-12350_12_Aug_27.pdf
I know there are a lot of things to consider here and voltage dropping too low can cause charging issues, but I don't know the charging profile of this regulator. I considered starting out with a bank of:
1x70Ah with disconnect (to take out of service)
+ 2 x 35ah
+70ah with disconnect (to bring into service) and increase terminal voltage for charge (prefer not to need this one).
If my ocean kicker had a charger I wouldn't worry about it or if I consistently used the same power I'd size to it. But now, I'm stuck carrying an extra 150lbs of battery because I'm afraid to connect them. These are extremely reliable batteries with a lot of output so I much prefer them over the pseudo deep cycle "marine" batteries sold most places.
I think I covered most of the necessary details here. Lol
Any thoughts?
