AGM and golf carts vs. Lithium Battery Test

[Son_of_Norway]

I just happened across a "Mortons on the Move" YouTube video. "Don't waste your money on batteries". (Can't figure out how to link it on my phone.) Very informative info and test comparison between golf cart, AGM and the Battle Borns. Worth a look. What was striking to me was that the lead-acid batteries did not perform to their rated capacities even under laboratory conditions. I have always thought that my AGM's were not giving the amp-hours that I hoped for even with light loads.

[agesilaus]

vermilye wrote:
A simpler comparison between AGM & lithium at different loads & temperatures performed by Battleborn. Of course Battleborn did the testing, but similar results.

Battleborn You Tube AGM to lithium test

But you see, they excluded golf cart batteries which seem to be the winner when cost/watt-hr is computed. Remember what Disraelli may have said: "There are three types of lies, lies, damned lies and statistics." And they seem to be lying by exclusion.

[vermilye]

A simpler comparison between AGM & lithium at different loads & temperatures performed by Battleborn. Of course Battleborn did the testing, but similar results.

Battleborn You Tube AGM to lithium test

[agesilaus]

MIGO TMI..heh. He packs so much tech data in so fast it's impossible to evaluate. And I am a tech tho not of the electrical variety. One thing I fished out of the flood was that the cheap 6V golf cart batteries were the most cost efficient. Strange that he didn't include Trojans or another high quality brand into the test. He then launches into the life cycle cost analysis. That's where I gave up. I have to admit that I have suspicions that this fellow is in the pocket of Battleborn. The info about 6V batteries was inserted in a very fleeting manner, almost as if he was hiding it.
As for life cycle I will admit that if you keep your RV for 20 years or so then yes, Lithiums may pay for themselves. But most of us will not. And even if you have to replace your 6V battery pack once or twice over your time in the RV the costs will never approach the $4000 LiB battery pack price.
I have never been a fan of AGM, they are designed to start a vehicle not store energy. Golf cart batteries are designed to store power and so are the LiB.
So I'll stick with 6V unless the price of LiB plummets. Something I doubt will happen because of the scarcity of lithium.

[Lwiddis]

Are you sure you have accurately computed your amp hour use?

[Tom_M1]

Here's a link to the video:
https://www.youtube.com/watch?v=iy3hga_P5YY

Very informative.