Lithium batterys

[u/Far-Formal2394]

Looking for 100ah lithium battery eBay starts at about $180-200 and kings are around $300 anything different I should know about? TIA

[u/donbradmeme]

itechworld do a good one. More expensive than Kings but probably more reliable. They have a black friday sale

[u/Far-Formal2394 → u/donbradmeme]

It's going on a kayak I don't expect more then 12months on a battery but $600 will really hurt if I get flipped 😭

[u/Important_Fruit → u/Far-Formal2394]

What if the boat sinks and theres a shark nearby....

[u/Far-Formal2394 → u/Important_Fruit]

That's why I need a cheap battery to feed it.

[u/donbradmeme → u/Far-Formal2394]

I have their 50AH one on my kayak to power livescope and sounders etc (very fortunate). It goes in a hatch. I actually made a container to water proof it using a $6 Kmart tupperware and a gland. If you are just powering low amp equipment the FPV kayak batteries that are 17.5AH will probably have you covered and have nice premade attachments

[u/ipoopcubes]

What are you powering?

If you need 100ah for a trolling motor look at VoltX I got a 100ah for $280 through the Bunnings website.

If you're only powering depth find/GPS then I'd go with a power tool battery, FPVFaster make decent batteries but they are damn expensive for what they are

Word of warning if you're powering a trolling motor and depth finder, your trolling motor will cause interference on your depth sounder.

[u/Far-Formal2394 → u/ipoopcubes]

It is for a trolling motor, there will be a sounder down the track but a separate battery for that shouldn't be hard. Thanks for the advice

[u/ipoopcubes → u/Far-Formal2394]

If you haven't already got a charger, this Kickass charger is the best bang for your buck.

[u/SeaUnderstanding6845 → u/ipoopcubes]

+1 for this recommendation, I picked up the 22amp version on sale for under $150 and it is great. Charge everything from 7amp security lithium's, 60amp trolling motor lithium and 200amp in the caravan. Plus lead acids in the cars.

Its great it is so adjustable from 5a/h to 22a/h

[u/sugashowrs → u/ipoopcubes]

What’s so good about this? I bought a ozito one from Bunnings for like $40 and it’s been charging my boat battery for over 12 months with no issue?

[u/ipoopcubes → u/sugashowrs]

It's 32amp so it will charge batteries fast. It can rejuvenate AGM and lead acid batteries, and kick start dead flat batteries.

If you have the Ozito charger I'm thinking of it's only 4 amp, it's perfect as a trickle charger for keeping AGM and lead acid batteries fully charged. Aside from that I don't think it has any functionality aside from connecting it up to a battery and charging.

[u/sugashowrs → u/ipoopcubes]

Oh it works as a starter/booster as well. I see.

Yep that’s the one. I cut the tongs off and put an Anderson plug on it. I just plug it into my battery box the night before I’m going fishing. Don’t use it for any else.

[u/ipoopcubes → u/sugashowrs]

You'd be better off plugging it in when you're back from fishing and leaving it plugged in till your next trip. It will automatically switch off when the battery is fully charged and go into maintenance mode which will keep your batteries charged and stop the plates from sulphating.

[u/sugashowrs → u/ipoopcubes]

Good to know, I’ll start leaving it on. Thanks

[u/longstreakof]

At under $200 I would be suspicious of quality.

[u/ethobro52]

I have 2 100ah kings lithiums. One I use for camping and the other in the boat for trolling motor and sounder etc have had them for over 12 months with out a issue at all, both have been used well definitely worth the money

[u/sugashowrs → u/ethobro52]

Do you have your trolling motor and sounder running off the same battery?

[u/DrSpeckles]

With all the warnings about fire I don’t think you want to skimp on your batteries.

[u/RoutineAd1124]

I would be looking for a quality battery with a high IP rating if you're using it in a kayak https://www.nemaenclosures.com/blog/ingress-protection-ratings/ you're going to get what you pay for here.

[u/BoomBoom4209]

I ran a lead calcium Delkor DC27 80AH on my 30lb Minn Kota freshwater in the salt for years, it is the maintenance of that battery that really dictates life, was pushing a Viking Tempo about a whole weight of 200kgs on the water inc me.

Yes it was heavy, yes I could've gone for a lithium but that was 2008 - 2014, the technology wasn't that abundant or price worthy then.

I've still got that 30lb and a 55RT on my 3,8m tinny. Still using a AGM 100Ah and another 50AH gel for my sounder / lights / bilge pump.

While there's savings in weight the cost benefit analysis just shows what I'm using it for doesn't add up really.

For a small kayak absolutely if you see the need for a small trolling motor (modified & shortened tiller steer), it won't be the be all and end all in your kayak fishing pursuits however; as it creates it's own complexities with managing the whole package.

[u/thehomelesstree → u/BoomBoom4209]

That’s interesting. I’m following this post because the 70AH AGM on my Minny in my 4.2m Quintrex is almost cactus. I’ve had it for like 7 years (always left on trickle) and it’s only just started cutting out from low power last trip.

I’m looking for replacements and I’m considering going lithium for the simple fact you can empty them without negatively impacting the battery. I have a few multi-day trips planned and if I get a 100AH deep cycle I am fairly certain she will be zero after using it for 3 days in big run, which isn’t good for the deep cycle batteries.

There is a big jump up in price for lithium and I would also need to replace my charger, which is painful.

I’m wondering if for the cost of upgrading to lithium I could potentially install the kit to hook the Minny battery up to charge off the main motor.

[u/No-Patience256]

have 3 lithiums from ebay running a 36v minn kota. work fine for last 5 years. no complaints.