At present I have a MinnKota MK345PC on-board marine battery charger.  I've believe the charger overheated with possible temp sensor damage.  I am in the process of more diagnosis but am thinking I will need to replace this charger due to being informed by MinnKota no servicing of charger components are available.  My question to all and everyone is what would be a good marine battery 3 bank on-board charger?  Other than MinnKota, due to the expense, I would sure appreciate any recommendations!        

None of them are 100% reliable. Good ones are all pricey. I went through two others including a Pro Mariner before I got my current Minn Kota MK220PC which is the 2 bank, 20 amp version of yours.

 

A-Jay 

My MK in my previous boat failed after 7 years and damaged the battery connected to the failed bank, when it did. I replaced it with a Cabelas brand made by Pro Mariner which was problem free for 2 years until I sold the boat. Current boat came with a Dual Pro Professional charger and it has worked flawlessly for 7 seasons. Dual Pros are the only repairable chargers on the market. 

Thanks Guys. Thanks for the reviews on chargers and as I figured you get what you pay for when it comes to chargers.   I finally completed my checks and diagnosing my present MK345 to find all appears to be OK and all working correctly.  As I thought with the near freezing temps here in NC these past two days the batteries won't take a charge as fast making me think the temp sensor was going bad.  I did replace the TM batteries since I have had them for over 6 years so now just ratchet strap the batteries down and off to the lake I go.  

For what it's worth, I've got this one on Amazon. I've used it for two summers almost every other day, charging two 100 amp batteries in a totally electric boat. I cover about 3-5 miles each time. I do a lot of trolling. It's been great. I also have an older cousin of this one in my camper for the past 8 years. One of the charging sides has died but the other is still working.

I have a NOCO 3 bank.  It is going on about 4 years now, working great.

On 1/18/2020 at 5:36 PM, DanielG said:

For what it's worth, I've got this one on Amazon. 

Going into my third season with this.  Great price on Amazon and I have not had any issues.  If I got 6-7 years like the guys above, I would.be okay with that.  

I guess I jumped the gun a bit.  Thought I was going to have to replace my onboard charger but nope not yet.  Got new Everstart 29DC's hooked-em up and all is going good.  That makes 2 yrs 9 months, April 12, 2017 - January 17,2020 for my MinnKota 345PC.  Guess that's that for the time being, at least till the MinnKota gives up the ghost!  At least now I have some good information from you guys on what chargers to choose from, Thanks all.     

On January 18, 2020 at 12:10 PM, LSU Fan said:

At present I have a MinnKota MK345PC on-board marine battery charger.  I've believe the charger overheated with possible temp sensor damage.  I am in the process of more diagnosis but am thinking I will need to replace this charger due to being informed by MinnKota no servicing of charger components are available.  My question to all and everyone is what would be a good marine battery 3 bank on-board charger?  Other than MinnKota, due to the expense, I would sure appreciate any recommendations!        

The lithium marine battery banner you have on the bottom of your page requires a special lithium battery charger, if that is what you have , could be something on my iPad?

I have a Norco Geniuos 3 bank 12 amp onboard charger that work good for AGM's.

 

Tom