I have finally purchased a trolling motor, 100AH battery, and a charger for my kayak. I would like to mount a battery box behind my Black Pak. I thought I found a battery box by Newport Vessels. Drop the battery in, has a built in circuit breaker, reads the battery level, easy peasy. But just plain as day on their website it is stated "Not for use with Lithium batteries". What would make a battery box not compatible with a Lithium Battery? And, do you know of any plug and play battery boxes that are made for lithium batteries?

After doing a little more research I have found a few people that are using the battery box I want with a lithium battery. Maybe Newport Vessels places that disclaimer on their website as a way to prevent a law suit? Either way, I pulled the trigger and when the battery box lands I will have everything I need to get that trolling motor installed on the kayak.  

Might be how the charge level is determined. SLA batteries, and this box, read the voltage level to determine. Lithiums don’t drop much in voltage, until they are dead, or there abouts. Like a lithium flashlight, the beam stays strong till it just stops working.

 

So the voltage level you’ll see on the box shouldn’t be counted on.

 

54 minutes ago, padlin said:

Might be how the charge level is determined. SLA batteries, and this box, read the voltage level to determine. Lithiums don’t drop much in voltage, until they are dead, or there abouts. Like a lithium flashlight, the beam stays strong till it just stops working.

 

So the voltage level you’ll see on the box shouldn’t be counted on.

 

     That's exactly what I found out about this battery box when using it with a lithium battery. That's fine by me as I do have an app for the battery I purchased. I should be good to go in that department. 🤞

Got the Battery box in. I get that the voltage meter can't be trusted when using a lithium battery with this Newport Vessels box. That has me questioning the built in circuit breaker. This box has a 60 amp circuit breaker built into the box. That should still work as intended even though I am using a lithium battery, yes?

8 minutes ago, RLinNH said:

Got the Battery box in. I get that the voltage meter can't be trusted when using a lithium battery with this Newport Vessels box. That has me questioning the built in circuit breaker. This box has a 60 amp circuit breaker built into the box. That should still work as intended even though I am using a lithium battery, yes?

It will be fine. The circuit breaker will open if it detects amperage greater than 60 amps. This is for protection when something bad happens in the circuit, like a short, or maybe the trolling motor gets tangled in weeds and tries to draw excess power. It is not concerned with voltage only excessive power draw.