what is the difference? i have a MK powered deep cycle battery designed for a wheelchair, i beleive its rated at 73 amp hours. i run a MK 50lb thrust TM and my 798ci SI HD FF off it. is this battery ok for my application? also have a stupid question, if i had something that draws 1 amp per hour does this mean the battery will last 73 hours before its drained? and do i need a deep cycle marine battery? thanks guys(and gals).......
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deep cycle marine/deep cycle?
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shawnfish said:
I think there use to be a differance between auto and marine starting batteries. Marine were suppose to be built to handle more vibration of the pounding of the waves. There isn't any marine spec that I'm aware of, so it is up to the mfg on what they call "marine". Some brands, I think it is just a different color of the case and a set of wingnut terminals.
DC are made for lots of applications. RV, golf cart, etc. While I have not used them, others have claimed they worked fine in marine. I do know you can get much higher reserve capacity DC from those other applications.
DC are usually rated at reserve capacity in minutes, ie so many minutes before the voltage drops to some level, with a given load. The load is usually 20 or 25amps.
I haven't touched a whellchair battery, but that sounds like a simple AH rating. Theoretically, a 1 amp load would run that many hours. In my experience, mfgs tend to be aggressive on that rating. A calculated reserve for that battery, would be about 180 minutes. That compares slightly better than many group 24 DC marine batteries.
If it is big and as heavy as a typical group 24, I'd try it.
FuzzyGrub said:shawnfish said:
I think there use to be a differance between auto and marine starting batteries. Marine were suppose to be built to handle more vibration of the pounding of the waves. There isn't any marine spec that I'm aware of, so it is up to the mfg on what they call "marine". Some brands, I think it is just a different color of the case and a set of wingnut terminals.
DC are made for lots of applications. RV, golf cart, etc. While I have not used them, others have claimed they worked fine in marine. I do know you can get much higher reserve capacity DC from those other applications.
DC are usually rated at reserve capacity in minutes, ie so many minutes before the voltage drops to some level, with a given load. The load is usually 20 or 25amps.
I haven't touched a whellchair battery, but that sounds like a simple AH rating. Theoretically, a 1 amp load would run that many hours. In my experience, mfgs tend to be aggressive on that rating. A calculated reserve for that battery, would be about 180 minutes. That compares slightly better than many group 24 DC marine batteries.
If it is big and as heavy as a typical group 24, I'd try it.
its a deep cycle, so its not for starting motor. im gonna use it for the minnkota and humminbird. its 12inch long,9inch wide,9inch tall(estimated guess from looking at a ruler) i do know its 52 lbs. what do you mean by 180 minute reserve?
shawnfish said:
It was an approximation calculated from the 73aH. 75 (close enough to 73, divided by a 25 amp load, equals 3 hours (180 min). Is it sealed or have removeable vent plugs? I prefer the latter, but you should get some good "free" use from it.
I think my group 29 has a 205 minute reserve capacity. I went to check online, but didn't find it. Found this, which has info that might help you: https://instoresnow.walmart.com/upl...JCI_11969_EverstartBP_D_boating_US_ENG_01.pdf
Outside of the battery maintainer, I tended to agree with the info.
Notice what it says about deep cycles being used for starting battery. I have a compact diesel tractor whos battery died suddenly. I subbed in my trolling motor DC and have been happy since (on 2nd season). I picked up another one a few days latter to put back in the boat, when it was more convienent. It spins that 3 cyl diesel faster than the original battery ever did. That diesel is allot more cranking load than any small outboard would have. I think it is even more of a load than my 350 mercruiser.
FuzzyGrub said:shawnfish said:
It was an approximation calculated from the 73aH. 75 (close enough to 73, divided by a 25 amp load, equals 3 hours (180 min). Is it sealed or have removeable vent plugs? I prefer the latter, but you should get some good "free" use from it.
I think my group 29 has a 205 minute reserve capacity. I went to check online, but didn't find it. Found this, which has info that might help you: https://instoresnow.walmart.com/upl...JCI_11969_EverstartBP_D_boating_US_ENG_01.pdf
Outside of the battery maintainer, I tended to agree with the info.
Notice what it says about deep cycles being used for starting battery. I have a compact diesel tractor whos battery died suddenly. I subbed in my trolling motor DC and have been happy since (on 2nd season). I picked up another one a few days latter to put back in the boat, when it was more convienent. It spins that 3 cyl diesel faster than the original battery ever did. That diesel is allot more cranking load than any small outboard would have. I think it is even more of a load than my 350 mercruiser.
great info,thanks what do you mean by ''free'' use? and its a sealed gel battery...
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