n0averagejoe

Can you charge a single 36v lithium trolling motor battery with a 12v on board alternator charger? Like the minn kota alternator charger?

alloyboy

The Minn Kota manual indicates that it is designed to charge 12 volt batteries.

A 36 volt battery will require a charger with a 36 volt output.

jfwireless

The Yandina Trollbridge36 does what you ask, I believe one of the Lithium battery companies also has an 12 to 36 volt on board 12-36 volt charger.

https://www.yandina.com/troll36info.htm

I have no experience with the Trollbridge36, maybe somebody with one can advise how well it works.

Jim

mattology

12v inverter to 120v to 36v lithium charger should do it

alloyboy

I think that works by paralleling three 12 volt batteries that are wired in series to output 36 volts when in the charging mode.

Now if the Li 36 volt battery provides access to the individual cells, then it might work. But that might bypass the battery management system and cause other problems.

What is needed is an outboard motor that runs on 24 or 36 volts.

cjlukens

Yes if you have the stealth DC charger.

Fishizzel

I have a single 36v lithium and my battery came with its own charger. May want to verify that your battery doesn’t need to charge a certain way.

jfwireless

I agree a 36 volt system on the outboard would be awesome, actually a dual voltage system 12/36 volt to help us all migrate over time. From what I have read the Trollbridge automatically switches between trolling mode and charge mode, obviously it can not be in both modes at the same time.

Jim

Champster

This may work, not sure what battery you have. Call them and see if it will work with your battery. Stealth 1 Charging ChargTech Industries
or https://www.lithiumpros.com/product/...n-battery-kit/

yandina

The Trollbridge 36 is NOT compatible with a consolidated 36 volt battery. It charges three 12 volt batteries by putting them in parallel for charging and connecting them in series for running the 36 volt trolling motor. It is just a smart series/parallel switch that allows a 12 volt alternator or single output shore power charger to charge three trolling batteries. You can't do this if the batteries are permanently connected in series.
A Lithium version is available for charging 3 Lithium batteries while retaining a conventional lead-acid starting battery.

jfwireless

LithiumPro has an M1236 charger they sell with a 36 volt Lithium battery kit that charges the 36 volt lithium battery from the 12 volts DC from your outboard or alternator. Here is a link to the kit, for some reason LithiumPro does not provide a separate listing for the M1236. When I messaged them for more info I was advised the M1236 will only work with their batteries, I have no idea why ?

https://www.lithiumpros.com/product/...n-battery-kit/

I did find the M1236 listed by another vendor, here is that link.

https://lithiumoutlet.com/shop/ols/p...attery-charger

Jim

alloyboy

Will you inform us as to the differences between the conventional trollbridge and the Li trollbridge?

cjlukens

I think they just rebrand the Stealth DC charger

yandina

The threshold voltage of the conventional Trollbridge is lower than the at-rest voltage of Lithium batteries so once it switched to charging mode it would never turn off as the Lithium batteries would feed backward into the starting battery and keep the voltage too high. The Lithium version just has a higher threshold voltage to initiate charging.

jfwireless

Yes but you must specify the Lithium version when ordering from Stealth1 I believe.

https://www.bassfishinelectronics.co...ore%20ordering.

Jim

mlanzotti

Power pro charge will do 36v and 12v system as well.

mark

LBI

So with the yandina, for lithium batteries, a series of three 12 V, for instance, how would you connect those three lithium batteries? Once it is set up and the batteries are connected together, do u need to change the connections for them to charge, or once you're done with initial setup/connections, do the connecting wires remain the same?

trying to decide between the Trollbridfe and the Sterling. The advantage of the Sterling is that it can charge a single 36 V lithium battery from a conventional 12 V battery I believe. The problem is I am getting no support whatsoever from Sterling. This concerns me.

yandina

The Trollbridge 36 LITHIUM takes care of connecting the batteries in parallel for charging and series for running, it is automatic.
Since the power doesn't have to be converted from 12 volts DC to AC, put through a transformer, then rectified back to DC with a 36 v battery regulator it is nearly 100% efficient and can charge at up to 100 amps. What is the charging current from your Stealth or Sterling?

LBI

CJLUKENS - how do u like the stealth? Easy to wire?

cjlukens

Very easy to wire. I sold the boat after only maybe 5 trips with it so no idea on how well it works. I will say they were very hard to get ahold of and seemed to be a guy who was semi-retired.