Conversion to LiFePo batteries

[HangOutdoors]

Careful, China's coming out with a "water" battery that stores more energy than lithium.

I was hearing about this. Very interesting. Could be a game changer here soon.

 

[Bottom Bracket]

Scientists say new ‘water battery’ can hold more energy than lithium cells

The iodine and bromine-based aqueous battery showed an energy density of 1200 watt-hours per liter, surpassing the 700Wh/L of non-aqueous lithium batteries.

www.mining.com

"Chinese scientists have developed a water-based battery with nearly double the energy density compared to traditional lithium batteries, according to new research published in a paper in Nature Energy.

According to researchers from the Chinese Academy of Sciences, tests revealed an impressive energy density of the iodine- and bromine-based aqueous battery that could reach 1,200 watt-hours per liter (Wh/L), surpassing the 700 Wh/L of non-aqueous lithium batteries"

 

[Bottom Bracket]

This is interesting, right down the road from our city house.

https://www.queencreekaz.gov/Home/Components/News/News/13041/13

LG Energy Solution’s $5.5 Billion Stand-Alone Battery Manufacturing Complex Project in Queen Creek Well Underway
With steel beams now being placed, the complex is on track to be completed in 2026, creating thousands of new jobs
Post Date:04/03/2024 3:00 pm

The construction of a major battery manufacturing complex in Queen Creek, Arizona, announced by LG Energy Solution last year, is on track to be completed in two years with the first round of hiring expected to begin at the end of this year. The company provided progress updates on its $5.5 billion (KRW 7.2 trillion) stand-alone facility during a stakeholder meeting today at Combs High School near the complex location (Ironwood and Pecos).​

 

[FSH 210 Sport]

Scientists say new ‘water battery’ can hold more energy than lithium cells

The iodine and bromine-based aqueous battery showed an energy density of 1200 watt-hours per liter, surpassing the 700Wh/L of non-aqueous lithium batteries.

www.mining.com

"Chinese scientists have developed a water-based battery with nearly double the energy density compared to traditional lithium batteries, according to new research published in a paper in Nature Energy.

According to researchers from the Chinese Academy of Sciences, tests revealed an impressive energy density of the iodine- and bromine-based aqueous battery that could reach 1,200 watt-hours per liter (Wh/L), surpassing the 700 Wh/L of non-aqueous lithium batteries"

As the first and only commenter said “I’ll believe it when I see it”.

Also the article also mentions the flammability of lithium batteries, again that is for the NMC lithium batteries not the lfp batteries. China currently produces 75-80% of the world’s cobalt from its mines in the DRC.

From what I understand Tesla is moving away from NMC batteries and going with lfp batteries.

I find the willful ignorance about NMC batteries use of the Chinese cobalt where a large portion of the work force in the DRC mines chilling at best. Big tech companies like to say their batteries are conflict free but all of that cobalt gets mixed together.

 

[Sherwood]

I wonder if prices dropping on lithium battery's has anything to do EVs not selling like expected.?

 

[FSH 210 Sport]

Update on Victron IP67 chargers.

Firstly the price the has dropped from $210 to $177.

When I bought these IP67 chargers through Battle Born, they waked me through the settings that they wanted to see. Once the first charger was set up, the BB tech showed me how to copy the settings and then paste them into the two remaining chargers.

So, just recently I went into a screen on the charger menu via Bluetooth where in I could see the whole charge profile from all of the charges I have done, the time to complete the average charge was 10.5 hours(???). When I tapped on the graph a pop up showed a breakdown of how long each phase of charging was taking, the bulk charge was as expected at roughly 3.5 hours, but the absorption was 8 hours, each and every time. I had read some time ago that the LFP batteries only need about 30 mins of absorption time, as opposed to a lead acid battery that will truly need the 8 hour absorption time to finish the charge without boiling the electrolyte after the bulk cycle takes them to 80% of charge.

I called Battle Born and told this to the tech and he told me that yes the LFP batteries only need 30 mins but to set the length of the absorption time to one hour. I’m expecting the the whole charge cycle to now be 3-5 hours depending on the depth of discharge, 50–80%, on the batteries.

Before:


After:


These chargers have now proven themselves to be the top shelf chargers that I had thought they were before I bought them. I’ll be adding two more of these IP67’s, one for my house and another for the AGM start battery, these will replace the two bank MinnKota that I installed after I got my boat. The Minnkota set to AGM (my charger was pre Li charge profile) has been working for my house LFP battery, but I’m not happy with its performance, takes too long at a 10A charge rate, and with the built in 8 hour absorption cycle it is taking roughly 7 hours longer than it ought to, and, I cannot set the charge profile the way that BB wants it set, and I cannot see where the MinnKota is in its charge cycle. I have two MinnKota chargers, a three bank 10A per bank and the two bank, those chargers will go back in the boat along with some new inexpensive flooded lead acid batteries when and if I ever upgrade to another boat. As a fyi, these Victron IP67 chargers can be set up for any battery chemistry and have several features not found on other chargers.