Navitas 25Ah LiFePo4 1C and 3C Discharge Test - They Said Give It 75 Amps So I Gave It 75 Amps!

[@mrkeopele]

thank you, i just bought from a neighbor, 8 of these for $40, real real happy for this battery tech!

[@kswis]

I love the discharge urge of lifepo4 its a beautiful thing. I have some of these cells ordered but am currently abusing 148ah of headways for my car audio nonsense, very well done video btw ty for sharing I am now a subscriber

[@diyrenewableenergyelectron4996]

Nice! 75 amps per cell could definitely deliver big power with several in parallel. Thanks for watching and thanks for the sub!

[@isitrigged4968]

I love these, I just moved all my channel stuff from IS IT RIGGED to this new channel, So ill be documenting my total new rebuild. But where i was going, i love these cells.

[@diyrenewableenergyelectron4996]

Were you able to get your hands on some/how many? They're quite the little performers! What are you building? Thanks for watching!

[@isitrigged4968]

@@diyrenewableenergyelectron4996 oh yeah man, I got 225ah at 16s9p and waiting on the others to come out, to get another 50-100 cells

[@diyrenewableenergyelectron4996]

Excellent! Glad to see you jumped on the opportunity! My friend scooped up 184, cant wait to interview him about his system.

[@isitrigged4968]

@@diyrenewableenergyelectron4996 that’s good. I’ve been just waiting cause they will go super fast. I’m shocked that 10,800 lasted 3 days !

[@diyrenewableenergyelectron4996]

They sold 10,800 of these?! Holy moly......

[@offgridwanabe]

It is always nice when you get what you paid for.

[@diyrenewableenergyelectron4996]

I agree! It was scary pulling 75 amps from these lol

[@harrisidiens564]

Those are pretty sweet little cells

[@diyrenewableenergyelectron4996]

I agree. Thanks for watching!

[@LChow-xq3xm]

Thanks for that informative video, not easy to make great videos 👍

[@diyrenewableenergyelectron4996]

Thanks for watching! Hopefully I can get better and better. Maybe even bigger and bigger projects, who knows!

[@LChow-xq3xm]

I appreciate your efforts and time you put into making those videos !!!

[@sunshine5349]

the 2nd round sale never occured on thier website. it was email only and the 2nd round sold out in a day or 2. they do have 50a new lifepo4 cells for $28 each in cases of 10 now which is only about 10% more in cost than your green battery cells.

[@diyrenewableenergyelectron4996]

They had some of the 25Ah for sale for a few months and they have a few different sizes for sale now. You definitely have to keep an eye out for deals on their site because they sell out quick! Thanks for watching!

[@K7CARadio]

Reading the comments, I see there was a second e-mail sale?......I never received that. I picked up 16 in the first sale for my e-bike. Just watched your 48v battery build video. Nicely done. I've been waiting for these to come up again. Any idea if there will be a 3rd sale?

[@diyrenewableenergyelectron4996]

I didn't get an email either. Sadness lol. I haven't heard any chatter about a third sale unfortunately. Thanks for watching!

[@urbfree1297]

Hey, Those batteries are good, man! I got a 16S2P set up. Today I ran those batteries for more that an hour at 400Watts. My MPPT switched off somewhere above 54.8V. I was busy doing other things but I expected that because it happened the day before. So I made a few notes and look up the instructions for the chinese brand MPPT. I did not find much. So I tried to recreate the shutdown condition again. Turning off the PV voltage to the MPPT caused it to start charging again. It happen three time. So I know MPPT was the culprict. The BMS kept the balance among the cells. I have a Classic SL so I can easily put it on line but I intend to get a MPPT another controller that can give 100A.

[@diyrenewableenergyelectron4996]

Glad you got it figured out! These little cells are awesome! Thanks for watching!

[@K4AX]

Hope I can snag some the next time they put them on the site

[@diyrenewableenergyelectron4996]

Good luck! Be quick! I hope you get some. Thanks for watching!

[@devilsoffspring5519]

I just ordered a dozen of these for an ebike. Dang, I hope mine are as good :)

[@diyrenewableenergyelectron4996]

Did you get the blue wrapped ones? Thanks for watching!

[@devilsoffspring5519]

@@diyrenewableenergyelectron4996 Yes, blue-wrapped from Battery Hookup in Pennsylvania. I hope they don't get pilfered/damaged in f*cking Customs. Canada can be screwy for that sort of thing...

[@diyrenewableenergyelectron4996]

Hopefully not! I got a few boxes of 24 and they had thick foam protecting them very well. Hopefully yours arrive safe!

[@phase3d]

Where did you get your bus bars?

[@diyrenewableenergyelectron4996]

I made them out of 1/2" crushed copper pipe. 1.75" long, hole spacing of 1.1"(ish) and 1/4" hole size. Thanks for watching!

[@urbfree1297]

Yep! I will run the 48 volt system and have the 12 volt just as a back up device incase the 48 volt have a problem. I will get more 120ah batteries to add to the set I got. Then I will run the 48volt system with 100ah batteries and configure the Gravitas to run 200ah on the 12 volt system

[@diyrenewableenergyelectron4996]

Prismatic cells are so flexible in their configuration. I'm liking them more and more!

[@guysgt5003]

A shunt is a resistor!! Its ok to get hot!

[@diyrenewableenergyelectron4996]

How hot? Lol

[@guysgt5003]

@@diyrenewableenergyelectron4996 ????

[@diyrenewableenergyelectron4996]

How hot should a shunt get? This was enough to cause burns.

[@mikerosenberg7726]

What BMS are you using?

[@diyrenewableenergyelectron4996]

For this test it was a Daly 100 amp 4S LiFePo4 BMS. Thanks for watching!

[@matthiashoffmann4149]

Nice Video! But why did the BMS not shut off when the voltage dropped so low?? Isn't that the exakt job of a BMS ?

[@diyrenewableenergyelectron4996]

It is! However these Daly BMS’s typically cut off at around 2.2v per cells which ends up being a lower total voltage than the voltage cutoff of most inverters. So the inverter shut down before there was any danger of over discharging the cells. Thanks for watching!

[@Your_Name_Goes_Here]

We’re these batteries top balanced by chance?

[@diyrenewableenergyelectron4996]

I top balanced them before testing but they were shipped fairly well balanced. Thanks for watching!

[@CarmichaelCraig]

Nice electric airplane on the wall, outrunner?

[@diyrenewableenergyelectron4996]

Yep. It has a park 450 1200kv on it from turnigy. I only run a 3S on it and putt around. These EPP foam planes are TOUGH! If they break you just glue it back together and in 10 minutes youre flying again. Thanks for watching by the way!

[@CarmichaelCraig]

@@diyrenewableenergyelectron4996 Nice, I use to import German out runners back before everything went to China! Lol

[@diyrenewableenergyelectron4996]

Ill bet they were higher quality lol its so insanely cheap to buy stuff out of China now though. Hobbyking can get you a motor like this for like 11 dollars. Insane.

[@CarmichaelCraig]

@@diyrenewableenergyelectron4996 I use to sell 400 size LRK kits for $120 & a built motor for $225. My largest motor was a 1,600 watt which sold for $600. Lol

[@diyrenewableenergyelectron4996]

Do you still fly?

[@karlpietrzak4467]

Negative feedback loop