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How to tell the difference between Grade A and Grade B cells. AND why you should always pay with CREDIT CARD. Going to make this sort of in bullet form – otherwise this will go on for many of pages of rambling which this will probably be anyway.. Before I start …25C is 77F – the perfect...

so I was watching a little YOUTUBE to get ready for the night shift ... YEP spending New Years Eve on a 24 hour shift out here in the Middle of South Texas as the On-Call technician ... just me - 200 Coyotes (dogs not smugglers) and a bunch of drillers and rough necks that really just needed a...

So my boss this morning stopped by the DONCAN warehouse (Doncan Technology (Shenzhen) Co) in Houston TEXAS to pick up (64) EVE-280Ah batteries that we had ordered literally 48 hours earlier. From beginning to end this has been a 10 out of 10 process. First it started with Jenny Wu of Doncan...

Thanks for the compliment ... From the folks that I know that do YT it actually takes a ton of work -- My picture is off of my company ID badge that my mother made me go to the hairdresser and take about 4 hours of makeup and haircut and stuff for that morning and then do the photo in the...

OK .. you're right .. changed it from "TOPLESS pics" to "NIPPLE slip" ... which actually describes it much better

In reference to the 300Kgf (ie 12PSI) I have called them and talked to the EVE folks. My Chinese is pretty much ghetto Chinese (being from LA) so it took me a while to get past the Help Desk ppl becuase they didn't think i understood what I was trying to ask -- I finally was able to get sent...

So last week they flew 2 of us back to SFO to meet with some of the CATL folks to give us a demo of the sodium-ion batteries that will probably be hitting the market late 2022 but for sure mid 2023. The first 15 minutes of the conference was them explaining how LFP batteries - which they have...

I think JASONHC is correct ... Charging LiFePO4 is a two step process … FIRST step uses constant current (CC) to reach about 60% State of Charge (SOC); And then STEP 2 kicks in until the charge voltage reaches 3.65V per cell. Turning from constant current (CC) to constant voltage (CV) means...

So we run our batteries 5% to 95% ... to each his own though ... we got LiFePO4 NOT to have them last 30 years -- but to be able to have a battery that will last 3X as long as heavier Lead Acid ... some folks can get away with running 40% to 80% .. we can't ... our systems are sized to truly...

So my boss who has a PhD in Chemical Engineering went to China on business about a month ago and visited one of the largest LiFePO4 battery manufacturers in the world that we use. They gave him a very good tour and today we reciprocated their hospitality by hosting their Lead Design Engineer who...

So i went back to LA to visit my mother last month ... worked most of the day Friday and was suppose to have left for the regular airport that Saturday but the company had a helicopter that brought in some parts and I caught a free ride to El Paso. My intention was to land ELP, overnight...

You are NEVER going to get a Discharge of more than 50% of ANY NON-COMMERCIAL RATED CHINESE BMS ... seriously ... virtually every BMS I have gone through - and I have gone through allot -- at about 50% of me pushing a continuous rated HIGH value through them it either turns into a room heater or...

ME = "Hey whatever most of us are doing seems to work - there's no fire -- good enough for me" Self-appointed "LFP Expert" - OMG your using a 2/0 instead of 3/0, your torqueing your batteries at 8 n/m not 8.5, your charging them to 3.65 instead of 3.6255, you did not compress your batteries -...

OK ... so of course I am a glutton for punishment and obviously after kicking over the beehive on my last post -- https://diysolarforum.com/threads/3142-00-for-32-280ah-3-2v-grade-a-fresh-manufactured-delivered-by-alithor-new-energy-co.20063/ where i found the batteries for (32) for 3143 i...

Sorry for the title - seemed to be a little clickbait after I posted it ... I was going to go with Chinese New Year – or what I call “Where the ^$%^ is my battery shipment?” but that was toooo long SOOOO every year we go through this TOPIC so going to try to help you. Hoping to make this short...

So I deal with several Chinese companies when ordering things. For some bizarre reason my corporate guys thinks that I know Chinese (LOL). I was born and raised in LA – I can barely order from a Chinese menu in English but I digress. SO with the limited Chinese I do speak (thanks Grandma) I...

For DIY 1 or 2 is MORE than plenty ... look as long as you have enough energy to last you through the night -- you are doing something right (why does this suddenly sound like a Viagra commercial?)(but I digress) .... A little story ... So we have some very sensitive equipment at a couple of...

OK ... talked to the senior design architect for EVE. He was very specific and short response. So these are NOT all his answers since I don't want to ramble BUT these are the ones that I think are important to us. Let me preface that he started out that although there are straightforward...

Sometimes you have to understand that they run their answer through Google Translate to get the answer Here-- let me show you what i mean ... YOU: How long will it take to arrive once I pay? The answer they actually typed to you (in Chinese). "Good God how do i know? The ports are all clogged...

Short story made long … one of the sub-contractors we have came into the TECH shop today with a ton of BBQ and asked if we had a moment could we help him eat some of the BBQ and also take a look at why he was NOT getting the charging he use to get off his panels on his RV … SO 15 minutes later...

@Off-Grid-Garage I just wanted to take a moment and honestly say thanks to @Off-Grid-Garage for taking so much time and effort in making the videos that he does. Its hard to realize how small (or large) this world really is - but I highly doubt that Andy ever thought that the videos he was...

Hats off to @jasonhc73 Below are (2) two Reference manuals that I have used extensively for the last couple of years. These were actually issued to us in my EE 101 classes BUT I highly recommend every solar enthusiast should have them handy as a reference. They literally do a great job...

BUT none of that is important .. even if WILL came back and said Signature Solar is 100% right then THAT makes the Signature Solar techs and owner look unknowledgeable because they couldn't repair their own equipment even when teleporting in ... THEY took remote possession of his system not...

Well THIS should be interesting ... I think we have all seen this episode before ... LOL

Signature Solar : I am not a business owner - nor ever would be - God bless you guys for risking your money, time and energy to get us the things we need -- BUT you are really losing "cool" points quickly trying to argue with a CUSTOMER that has done nothing but defend what you guys did for him...

HOW TO KILL A BATTERY (PART#2) So my boss who has a PhD in Chemical Engineering went to China on business about a month ago and visited one of the largest LiFePO4 battery manufacturers in the world that we use. They gave him a very good tour and today we reciprocated their hospitality by...