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01-07-2014, 03:08 PM | #1 |
Not Yet Wild
Join Date: Oct 2013
Posts: 50
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DPI Accusense Question
Since I have had some issues regarding excessive water usage in batts (hopefully, resolved), I do have a concern about this charger and need some enlightenment.
My concern is, since I am away from the cart 2-3 weeks at a time, should I use this charger, with constant plug in, and not worry about potential water loss issues? I am not sure how much gassing/water loss occurs during what I perceive as a "float/maintainer" charge, after batts are fully charged. I do understand heat and other atmospheric conditions contribute to water loss. Since the jury is still out regarding my current charger, I have no qualms in investing in a new one. Your thoughts? |
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01-07-2014, 04:46 PM | #2 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,419
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Re: DPI Accusense Question
The float charge is a very low amperage charge, just enough to keep the batteries in a slightly elevated state but not enough to cause any gassing or significant loss of water.
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01-08-2014, 11:53 AM | #3 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: DPI Accusense Question
Technically, electrolysis of the water in the electrolyte (gassing) occurs whenever there is current flow through the battery. However, the only time a significant amount of gassing occurs is when the current flowing is charging the battery and the On-Charge voltage is 2.35VPC (Volts per Cell) or greater.
In its highest voltage mode (US Battery), the DPI Accusense float charges at a regulated voltage of 2.21VPC, which is well below the gassing stage. For Exide it is 2.20VPC and for Trojan it is 2.19VPC. (I'm not sure what it is in the Full River mode since that is the AGM mode and I don't use AGM batteries.) The pack is held at a constant voltage, so the current flow equals the self-discharge rate, plus any parasitic losses. I've had a set of used T-105 batteries connected to a 36V DPI charger since July and they haven't used more than a pint of water between the six in six months. During the same time period, my seven Exides have been connected to a 42V DPI when I wasn't out and about on the cart and used about a pint a month collectively when I was riding it most every day. Which reminds me, I've got to check the fluid levels when it warms up a little around here. |
01-08-2014, 12:44 PM | #4 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,419
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Re: DPI Accusense Question
Do you put cold water or warm water in your batteries?
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01-08-2014, 01:32 PM | #5 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: DPI Accusense Question
Never do anything special other than taking steps to keep the distilled water from freezing.
In the summer, I keep a jug of distilled water and the filler bottle in the garage where the cart is kept, so it is about the same temp as the battery electrolyte. From late fall to early spring when the night temperature might get cold enough to freeze distilled water, I keep them in the house I guess that means I use temperature neutral water in the summer and warm water in the winter. Does it make a Difference? |
01-08-2014, 02:04 PM | #6 | |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,419
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Re: DPI Accusense Question
Quote:
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01-08-2014, 02:51 PM | #7 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: DPI Accusense Question
Good one. I fell for it.
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01-08-2014, 04:38 PM | #8 |
So wild it hurts!
Join Date: Nov 2011
Location: Atlanta, Georgia
Posts: 1,412
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Re: DPI Accusense Question
I use kool aid.
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01-08-2014, 07:54 PM | #9 |
Gone Wild
Join Date: Nov 2011
Location: Central Texas
Posts: 205
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Re: DPI Accusense Question
There's a filler bottle?
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01-08-2014, 08:23 PM | #10 |
So wild it hurts!
Join Date: Nov 2011
Location: Atlanta, Georgia
Posts: 1,412
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Re: DPI Accusense Question
Yes, there is a kool aid filler bottle.......
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