Home |
Search |
Today's Posts |
|
#1
posted to rec.boats
|
|||
|
|||
Charging 24 volt trolling batteries with a 12 volt system.
On 8/19/2011 8:01 AM, Tim wrote:
On Aug 19, 12:00 am, wrote: "Tim" wrote in message ... This has always been a problem with running a 24v system and expecting it to charge from a 12 v engine battery. I suggested running a battery isolator connected to a third battery (house battery), a 2000w mod. sine wave power inverter to step up from 12v DC to 120v AC,then using the 120v charger to fill the trollers BTW, the charger would be 24v, supplying each battery (2-12v series) @10a. each . I had it all drawn out, but the 'client' didn't want to disturb his origional engine wiring to install the battery isolator. No problem, after all it's his boat and not mine. Evidently it wouldn't be do-it-yourself friendly enough for him, besides extra weight and equipment etc, etc.... Then just recently he sen't me a link to this: http://atkinsonelectronics.com/manuf...fs/MBCM-24.pdf After reviewing the products schematic, I gave my opinion. FWIW "I like it. I like everything about it. I see exactly what they're doing and it makes a lot of sense. The trolling batteries are now independent and the unit itself does the switch over instead of having them hard wired in series with each other. I studied out the first two tables, and it's simple to install. no modification to the original wiring harness is necessary. Just a bolt-on operation. plus, if necessary, you can jump start the engine battery from the trollers if need be. I dont' know how much extra is the 'auto-start' feature is,and I don't know how necessary it would be but I thought that was cool too. Batteries get low and you can have the engine start itself for charging. Of course, the start up engine noise might scare off some fish at the wrong moment, but.... Also, I'm not sure how much of a charge rate you'd actually get in the trollers if you're only running a short distance. If you're only out a couple miles out and run the trollers flat, I'm not sure if running back that two miles would give a sufficient charge to them, because now you're maintaining 3 batteries, instead of one. but then again. it's trial and error on that part. But I think these guys are on to something, and no more than it really costs I don't think you could go wrong with it. Just my simple opinion. and thanks for the link. it's interesting!" Tim So... I did some more looking around and have found that these have some pretty good independent reviews. Not mere company propaganda. So if you're trying to charge 24v out of 12v. this might be the way to go. Jsut thought I'd pass this along. Reply: If you are going to generate 110v from the engine to run a charger, just buy a charger than will handle 2 12 volt batteries. Just clip the leads to each battery. Bass Pro, Cabela's all carry multibank chargers. Bill, the guy already had a 24v charger that came with the trolling motor, the problem was that he didn't have shore power, so he had to haul out the batteries and charge them which was a pretty good distance. Yo Tim, Looks like you are planning to charge the deep cycles with your alternator. It's probably going to take quite a bit of engine run time to charge the deep cycles. Will your client be putting in enough engine hours to do the job between uses of the trolling motor? |
#2
posted to rec.boats
|
|||
|
|||
Charging 24 volt trolling batteries with a 12 volt system.
On Aug 19, 9:23*am, BeachBum "not a wrote:
On 8/19/2011 8:01 AM, Tim wrote: On Aug 19, 12:00 am, *wrote: "Tim" *wrote in message .... This has always been a problem with running a 24v system and expecting it to charge from a 12 v engine battery. I suggested *running a battery isolator connected to a third battery (house battery), a 2000w mod. sine wave power inverter to step up from 12v DC to 120v AC,then using the 120v charger to fill the trollers BTW, the charger would be 24v, supplying each battery (2-12v series) @10a. each . I had it all drawn out, but the 'client' didn't want to disturb his origional engine wiring to install the battery isolator. No problem, after all it's his boat and not mine. Evidently it wouldn't be do-it-yourself friendly enough for him, besides extra weight and equipment etc, etc.... Then just recently he sen't me a link to this: http://atkinsonelectronics.com/manuf...fs/MBCM-24.pdf After reviewing the products schematic, I gave my opinion. FWIW "I like it. I like everything about it. *I see exactly what they're doing and it makes a lot of sense. The trolling batteries are now independent *and the unit itself does the switch over instead of having them hard wired in series with each other. I studied out the first two tables, and it's simple to install. no modification to the original wiring harness is necessary. Just a bolt-on operation. *plus, if necessary, you can jump start the engine battery from the trollers if need be. I dont' know how much extra is the 'auto-start' feature is,and I don't know how necessary it would be but I thought that was cool too. Batteries get low and you can have the engine start itself for charging. Of course, the start up engine noise might scare off some fish at the wrong moment, but.... Also, I'm not sure how much of a charge rate you'd actually get in the trollers if you're only running a short distance. If you're only out a couple miles out and run the trollers flat, I'm not sure if running back that two miles would give a sufficient charge to them, because now you're maintaining 3 batteries, instead of one. *but then again. it's trial and error on that part. But I think these guys are on to something, and no more than it really costs I don't think you could go wrong with it. Just my simple opinion. and thanks for the link. it's interesting!" Tim So... I did some more looking around and have found that these have some pretty good independent reviews. Not mere company propaganda. So if you're trying to charge 24v out of 12v. this might be the way to go. Jsut thought I'd pass this along. Reply: If you are going to generate 110v from the engine to run a charger, just buy a charger than will handle 2 12 volt batteries. *Just clip the leads to each battery. *Bass Pro, Cabela's all carry multibank chargers. Bill, the guy already had a 24v charger that came with the trolling motor, the problem was that he didn't have shore power, so he had to haul out the batteries and charge them which was a pretty good distance. Yo Tim, Looks like you are planning to charge the deep cycles with your alternator. It's probably going to take quite a bit of engine run time to charge the deep cycles. Will your client be putting in enough engine hours to do the job between uses of the trolling motor? That's a good question and that's what I mentioned in the return email to him. If simply going out for a couple miles, I didn't think it would have a good recovery rate on ultra-low trolling batteries, but his outboard motor alt. is rated for 65a. (so he says,- I don't know) and on a short run it might be ok, but that's just a guess. after a day of fishing, he might want to take it out and do a good run or so to build the batteries back somewhat. OR, not trolling around till the prop quits... LOL! |
#3
posted to rec.boats
|
|||
|
|||
Charging 24 volt trolling batteries with a 12 volt system.
On Fri, 19 Aug 2011 15:31:19 -0700 (PDT), Tim
wrote: Yo Tim, Looks like you are planning to charge the deep cycles with your alternator. It's probably going to take quite a bit of engine run time to charge the deep cycles. Will your client be putting in enough engine hours to do the job between uses of the trolling motor? That's a good question and that's what I mentioned in the return email to him. If simply going out for a couple miles, I didn't think it would have a good recovery rate on ultra-low trolling batteries, but his outboard motor alt. is rated for 65a. (so he says,- I don't know) and on a short run it might be ok, but that's just a guess. after a day of fishing, he might want to take it out and do a good run or so to build the batteries back somewhat. OR, not trolling around till the prop quits... LOL! ==================== In the long run he will need more recharge time. Probably some sort of small generator or a large bank of solar cells is the right answer if he doesn't have shore power available. A wind generator might work also if he's in an area with good breezes. |
Reply |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
adding a 24 volt trolling motor to a 12 system | Electronics | |||
The Best Way to Provide 24-volt for a 24-volt Trolling Motor? | General | |||
Golf cart batteries w/ 12 volt batteries - Problem? | Cruising | |||
12-24 volt trolling motor | General | |||
Is it ok to run a 24 volt trolling motor on a 12 volt battery to test the motor to see if it actually runs? | General |