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Lithium Battery Question #13342352 11/14/19 08:35 PM
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Hook'em79 Online Content OP
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So this might be a stupid question but if I wanted to replace my lead batteries with these I would need 1 36 volt and 1 12 volt battery correct?

So I would be eliminating 2 batteries in the process and several pounds of weight?

Am I missing anything?


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Re: Lithium Battery Question [Re: Hook'em79] #13342362 11/14/19 08:40 PM
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A 36v and a 12v combined will weigh about 75lbs. Close to the same as one group 31 deep cycle so you would be eliminating about 150lbs.

Re: Lithium Battery Question [Re: Hook'em79] #13342375 11/14/19 08:59 PM
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Jeff From Iowa Offline
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I used 3 for my tm 50ah relions and one 100ah for my start.

I eliminated 150 by also going to a smaller charger system.

positives are the charge rate, weight, life (3-5000 cycles) and the performance each and every day.

Weight was my last concern.

Id suggest going three becasue if one fails you can stick a walmart in there and fish on.

Check these out I found today on ebay... At this price I cant understand anyone buying a agm for 2-3-400 anymore..

https://www.ebay.com/itm/LIFEPO4-12V-50AH-LITHIUM-PHOSPHATE-LFP-DEEP-CYCLE-BATTERY-Lead-AGM-Replacement/163815117924?hash=item2624245464%3Ag%3Ac20AAOSwnLFdUVmu&fbclid=IwAR1rangEKuGbGVnU1OI7BPyrwZHoVichem6ax39m-905q7Q-_GzgLMCn8xI

Re: Lithium Battery Question [Re: Hook'em79] #13342439 11/14/19 10:20 PM
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Hook'em79 Online Content OP
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Do you have to get a special charger for them as well?


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Re: Lithium Battery Question [Re: Hook'em79] #13342443 11/14/19 10:21 PM
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Originally Posted by Hook'em79
Do you have to get a special charger for them as well?



Some yes, some no. It depends on the manufacturer so be sure and ask that question.


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Re: Lithium Battery Question [Re: Hook'em79] #13342456 11/14/19 10:37 PM
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Jeff From Iowa Offline
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Originally Posted by Hook'em79
Do you have to get a special charger for them as well?



no you dont

Re: Lithium Battery Question [Re: Hook'em79] #13342492 11/14/19 11:13 PM
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Ask the battery manufacturer. Some advise a 36V Charger for a 36V Battery, 24V Charger for a 24V, & 12V Charger for 12V Batteries. I have a single 36V Battery 40 Ah & don’t ever run out of power in a day on the water. It weighs in at 24#’s. Call me if you want more info. 325-998-6077.


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Re: Lithium Battery Question [Re: Jeff From Iowa] #13342505 11/14/19 11:33 PM
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Originally Posted by Jeff From Iowa
I used 3 for my tm 50ah relions and one 100ah for my start.

I eliminated 150 by also going to a smaller charger system.

positives are the charge rate, weight, life (3-5000 cycles) and the performance each and every day.

Weight was my last concern.

Id suggest going three becasue if one fails you can stick a walmart in there and fish on.

Check these out I found today on ebay... At this price I cant understand anyone buying a agm for 2-3-400 anymore..

https://www.ebay.com/itm/LIFEPO4-12V-50AH-LITHIUM-PHOSPHATE-LFP-DEEP-CYCLE-BATTERY-Lead-AGM-Replacement/163815117924?hash=item2624245464%3Ag%3Ac20AAOSwnLFdUVmu&fbclid=IwAR1rangEKuGbGVnU1OI7BPyrwZHoVichem6ax39m-905q7Q-_GzgLMCn8xI

thumb


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I hope it’s as big as you say it is Hop. Don’t wanna be disappointed

Re: Lithium Battery Question [Re: Hook'em79] #13342508 11/14/19 11:35 PM
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Originally Posted by Hook'em79
So this might be a stupid question but if I wanted to replace my lead batteries with these I would need 1 36 volt and 1 12 volt battery correct?

So I would be eliminating 2 batteries in the process and several pounds of weight?

Am I missing anything?

It's all about amp hours. 1 36v battery with 40 amp hours may not be enough if you fish hard just like 1 12v battery with 50 amp hours wont run a boat on tournament day. I would suggest at least 50 amp hours for the troller( if it's a 36v) and at least 80 amp hours for the starting battery. I would go 100 on my starting battery

Re: Lithium Battery Question [Re: Hook'em79] #13342539 11/15/19 12:05 AM
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I have 1 125 amp starting and three 100amp hours for trolling. Took 175 pounds out of the rear of the boat. Never look back.


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Re: Lithium Battery Question [Re: Hook'em79] #13343006 11/15/19 02:16 PM
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Yo Jeff From Iowa, do they rate LI batteries different than lead acid and AGM? Most of those troller batteries are 100 ah or greater. You mentioned yours are 50. The ones on the eBay link are 40. Just learning here.

Re: Lithium Battery Question [Re: Hook'em79] #13343047 11/15/19 03:05 PM
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Bite the bullet and get the highest amp lithiums they have, typically 100ah. You won't regret it. Get two crankers and two trollers, if you run your main down you can jump it with the other troller. The Relion cranker is RB100H. The troller is RB100.The troller WILL NOT crank a motor. I would stay away from the 36v single, three 12v singles will outlast the 36v according to Relion. The only thing about the charger, get the highest amp charger, 15amp min., you can. Any charger will work, but the higher amp chargers work better according to Relion. I'm running mk460PC with no problems. I'm doing a field test on a Trojan Trillium lithium cranker. Seems to be OK but it is not as high amp output as the Relion.


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Re: Lithium Battery Question [Re: bassnman] #13343142 11/15/19 04:13 PM
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Jeff From Iowa Offline
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Originally Posted by bassnman
Yo Jeff From Iowa, do they rate LI batteries different than lead acid and AGM? Most of those troller batteries are 100 ah or greater. You mentioned yours are 50. The ones on the eBay link are 40. Just learning here.


rate different no

They are more efficient and put out FULL voltage until they shut off from being too low.

There is no comparison.

Re: Lithium Battery Question [Re: Hook'em79] #13343184 11/15/19 04:49 PM
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"Can be charged with most traditional lead-acid chargers that do not have “Desulfate” mode, provided the current levels do not exceed lithium battery charge specification.

Using a traditional lead-acid charger that reaches 14.4-14.6 volts will allow the battery to be fully charged. Chargers that do not exceed 13.6 volts will only charge the battery to 50% capacity or less."

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