anyone ever heard of these? Do they work well for trolling motors? Like Rande says in the video sometimes the regular lead acid batteries dont last long and im not gonna dish out the money for Lithium Ion
Look into lithium phosphate
This is the first I have heard of them. Curious how if they are a new type of battery how they know it will last 10 years. I know my Lithium Ion batteries have a 5 year warranty. Others when I bought listed a 10 year, but when I read the fine print after 5 years it was pretty much a worthless warranty. Read what the warranty states and whether it is prorated and when the pro rating kicks in rather than full replacement. I hope they work as advertised. It would be nice to save a bunch of money the next time I need batteries.
I didn’t watch the video, and not sure what you mean by dish out money for Lithium ION, they are all expensive lol. Per the thumbnail it is a 100AH LiFePO4 battery which is what Amped, Dakota etc. sell for trolling motor batteries – LiFePO4 technology works great for that, and ice fishing batteries. Only real issue is cold weather charging which caused issues for some tournament anglers last spring at a NWT event. I think they are making heating elements for the batteries now.
Guessing the battery in the video is a Chinese knock off. Be careful with those, might not have a proper BMS- battery management system.
James just did a podcast on Lithium batteries with Jason Mitchell Outdoors. Maybe someone can pass this on to him and the resident expert can chime in?
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Never heard of these.
Aren’t Amped, Dakota and Marcums lithium iron phosphate as well??
The price point on these batteries is really coming down.
$209 for a big 100ah in the video is awesome!
The LifePO4 has me confused on these because I already have 2 of them. A Dakota Lithium and one other off Amazon are they the same thing?
Warranty and service is a big selling point on these pricy batteries.
The technology he is plugging, Lithium Iron Phosphate, is not new or novel and has been used for several years in a deep cycle applications. Lithium Iron Phosphate can also be referred to LFP or LiFePo4. Lithium Ion is a different chemistry and is often used in smaller devices – laptop, smartphone, etc because it has a higher energy density. Lithium Ion batteries are also prone to thermal runaway because the chemical process during combustion release more oxygen. I do not recall seeing any Lithium Ion batteries advertised for deep cycle trolling motor applications although there are some smaller versions that are targeted at the portable electronics market (flashers, forward facing sonar, etc)
With respect to LFP batteries, and my limited research, there are roughly two pricing groups 1) approx $350 or less and 2) $700 to $900 for a 100Ah deep cycle battery. Note I had not previously researched Dr Prepare batteries and and comments below are based upon a cursory review of their website. Some cost drivers appear to be related to –
– The type of cells used. There are pouches, cylindrical and prismatic. It appears prismatics are favored. I could not readily find the cell type on Dr Prepare’s website
– BMS design to include high/low temp protection, over/under charge, etc. Some batteries do not have low temp protection and charging a cold LFP can permanently damage it. It appears this battery has low temp cut off and is set at 41F. Most other batteries I looked at were around 32F (32 is still considered the safety zone for LFP batteries). 41F could be a show stopper for someone up north that likes to fish early or late in the year unless they also heat the batteries before charging.
– Case design. Some batteries have thermally fused cases and others have cases that allow repairs to be made without damaging the case.
– Company origin. The cells all appear to come from China. Some batteries are spec built for US based companies and some US companies appear to perform some of the final assembly. From what I can tell, the batteries in the lower cost group are sold/shipped from Chinese based companies.
– Warranty. Warranties can vary greatly by length and value. Some batteries are so aggressively prorated that after a few years it is the same as having no warranty.
– Warranty service. From what I can tell the warranty service for the lower price point batteries is performed by the Chinese seller. Reviews for these batteries tend to be pretty good but many of negative reviews comes from warranty service – limited ability to contact support since they are 12 hour offset, a lot of questions/troubleshooting before a warranty claim is approved, the time delay in getting the unit returned and a new unit shipped. Several of the higher price point retailers perform their own troubleshooting and repair with the US. They state they are able to repair and ship a battery within 24-48 hours. The longest part of the turn around time is that LFP batteries have to ship via ground
– EIDT TO ADD – Construction quality. There are several online videos showing teardowns of various batteries. Some of them are rather shoddy but there are a number of lower price tier batteries that appear to be well constructed.
There are a lot of happy buyers in both price tiers.
The selling point of these batteries is the reduced weight. I’d be surprised if you could get 10 years out of them. They just haven’t been around long enough to know that yet.
Also, another item to keep in mind is the charger. Not every on board or battery charger is compatible for these lithium batteries. Mine aren’t. Mine are only good with lead acid or AGM. Someone already mentioned that they cannot be charged in cold temps. They can be used, they just need to be warmed up to be charged. Or buy a battery heater for them.
I just purchased two deep cycle Duracell Ultra AGM batteries on Black Friday. They came with an 18 month warranty. I usually get about 3-4 years out of standard lead acid deep cycle batteries, so I am expecting to get at least 5 years out of these new AGMs.
AGM’s are great batteries, but I can’t wait until my pair in the Grady $hit the bed lol
They’re on at least year 6 and seem to be weakening a little, but it’s hard to say since I recently installed some bigger graphs.
Looking forward to losing over 100lbs off the stern when I replace them with lithiums.
That’s almost the equivalent of removing my kicker motor lol
AGM’s are great batteries, but I can’t wait until my pair in the Grady $hit the bed lol
They’re on at least year 6 and seem to be weakening a little
Good to hear B-Man. Thanks
Is this a joke? Those are lithium phosphate just like others. He calls them lithium iron, but that doesn’t change anything. Plenty of videos on YouTube about the dangers of knock off cheap batteries. Ice Holes site might open your eyes to some of the dangers. Stay away! PS: James/Norsk are making Lithium Ion batteries, these are Lithium Iron Phosphate(commonly called Lithium Phosphate). If you don’t know the difference you really should read up a little.
Is this a joke? Those are lithium phosphate just like others. He calls them lithium iron, but that doesn’t change anything. Plenty of videos on YouTube about the dangers of knock off cheap batteries. Ice Holes site might open your eyes to some of the dangers. Stay away! PS: James/Norsk are making Lithium Ion batteries, these are Lithium Iron Phosphate(commonly called Lithium Phosphate). If you don’t know the difference you really should read up a little.
James/Norsk make both Lithium Ion and Lithium Iron Phosphate batteries. Their ice fishing batteries are Lithium Ion, their marine batteries are LiFePO4.
Aren’t Amped, Dakota and Marcums lithium iron phosphate as well??
The price point on these batteries is really coming down.
$209 for a big 100ah in the video is awesome!
Or only taking one kid fishing. 
Surprised you would need/want to shed any weight in that Grady…
Based off thalweg87 comments perhaps 3rdtryguy needs to do a little research of his own. No it isn’t a joke. I dont go to sleep thinking about batteries. I know next to nothing about the intricacies of what makes a lithium ion vs a lithium iron and quite frankly I’ve lived a pretty good life without that information. I posted a question seeking guidance – you know kinda what forums are intended for
I’ll probably stick with lead acid because my onboard charger won’t charge these but I’m glad I asked the question and got some feedback
like mentioned above, Ice Hole Power does some good videos tearing apart batteries, he didn’t do this brand but a quick youtube search found another guy exposing issues with it.
Crappie,
What kind of charger do you have? The Minnkota PC chargers are not lithium chargers but they will charge a lithium battery in the AGM setting.
The biggest thing is lithium batteries need over 14 volts output of the charger.
I’ll probably stick with lead acid because my onboard charger won’t charge these but I’m glad I asked the question and got some feedback
Mine won’t either. If I was to update my chargers I’d go with the Noco brand.
Crappie, if you took that as a personal attack on you, then I need to apologize to you. My slam was against the guy who did the video. But I do stand by the fact that a person needs to be very very skeptical of lithium ion batteries or lithium phosphates that haven’t been safety tested. That’s actually a pretty good little video that 10Klakes posted just a few above me.
I just wrote up a reply with my experience and it did not post, I’ll be dammed if I’m going through the trouble to rewrite this!!!
F it, see ya!
Straight from their website…
【Low-Temperature Cut-Off Protection】 The low-temperature cut-off protection ensures the longevity of the battery’s health. When the temperature falls within the range of 23℉ to 41℉, the charging process halts. Similarly, when the temperature drops between -13℉ to 5℉, discharging ceases. This feature makes it ideal for use in challenging and demanding environments.
Cant charge when battery temp is below somewhere between 23-41 F and wont give power somewhere between -13 to 5 F. Not very impressive for anyone N of the Mason Dixie line…
I just ordered two of the DrPrepare 100MAH with the updated BMS you can tell the difference as the old ones have white label and the new updated has a red label on the right side of the battery. Anyway for $209 delivered I am giving them a shot,.
I just ordered two of the DrPrepare 100MAH with the updated BMS you can tell the difference as the old ones have white label and the new updated has a red label on the right side of the battery. Anyway for $209 delivered I am giving them a shot,.
Does the updated bms allow them to be used in the cold ?
Straight from their website…
【Low-Temperature Cut-Off Protection】 The low-temperature cut-off protection ensures the longevity of the battery’s health. When the temperature falls within the range of 23℉ to 41℉, the charging process halts. Similarly, when the temperature drops between -13℉ to 5℉, discharging ceases. This feature makes it ideal for use in challenging and demanding environments.Cant charge when battery temp is below somewhere between 23-41 F and wont give power somewhere between -13 to 5 F. Not very impressive for anyone N of the Mason Dixie line…
won’t charge between 23-41 degrees? That seems real weird but if that’s what they say then it must be true. I didn’t make any comment about the two different technology’s, that’s your choice. James told me in post that the cold temp cutoff wasn’t needed, the high temp is.
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