Dirt Cheap Lithium Battery! Cheaper than Lead Acid. You will love this thing!

All sources below are out of stock, including the one I bought these batteries from. DO NOT PURCHASE THE BATTERY WITH MISSING BMS CABLES!! People are actually bidding on it, and it has been over discharged and the red light is on. This thing is worthless! You need to find good condition valence batteries on ebay. More will be in stock in due time, so keep an eye on ebay listings. And yes, the price has increased for many listings ever since I made this video. Most sources are completely out of stock. If you want a cheap lithium battery that is not used, check out my website: www.mobile-solarpower.com/lithium-batteries.html
Valence Source: www.ebay.com/itm/Valence-u-charge-RT-Series-U1-12RT-LiFePO4-12-8V-40Ah-Lithium-Ion-Battery/372717154042?_trkparms=aid%3D1110001%26algo%3DSPLICE.SIM%26ao%3D1%26asc%3D20131231084308%26meid%3Dbcb5d6ac853844a38435c09df03dd375%26pid%3D100010%26rk%3D2%26rkt%3D12%26sd%3D254302874779%26itm%3D372717154042%26pg%3D2047675&_trksid=p2047675.c100010.m2109
Valence Source 1: rover.ebay.com/rover/1/711-53200-19255-0/1?icep_id=114&ipn=icep&toolid=20004&campid=5338408166&mpre=https%3A%2F%2Fwww.ebay.com%2Fitm%2FValence-u-charge-RT-Series-U1-12RT-LiFeMgPO4-12-8V-14v-40Ah-Lithium-Ion-Battery%2F163782961173%3F_trkparms%3Daid%253D1110001%2526algo%253DSPLICE.SIM%2526ao%253D1%2526asc%253D20131231084308%2526meid%253Dc4cd5953310741acaf35ba475ebeae5b%2526pid%253D100010%2526rk%253D1%2526rkt%253D12%2526sd%253D323856788291%2526itm%253D163782961173%2526pg%253D2047675%26_trksid%3Dp2047675.c100010.m2109
Valence Source 2: rover.ebay.com/rover/1/711-53200-19255-0/1?icep_id=114&ipn=icep&toolid=20004&campid=5338408166&mpre=https%3A%2F%2Fwww.ebay.com%2Fitm%2FValence-u-charge-RT-Series-U1-12RT-LiFeMgPO4-12-8V-40Ah-Lithium-Iron-Battery%2F254302874779%3Fepid%3D696740128%26hash%3Ditem3b35a1ec9b%3Ag%3AjhQAAOSwSXRc9TYT
Valence Source 3: amzn.to/2kivyp5
Manual: mrbill.homeip.net/downloads/userGuideValenceRT.pdf
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  • For those commenting who did not watch the video above: Yes they are out of stock. Yes I bought them for $300 for 2. Yes there are other higher priced listings. Don't buy them. Yes it has a BMS. Please watch the video to learn this. Every time a battery or something does well in my video, it's out of stock within a hour. Or 3 hours max. Happens nearly every time. Be sure to hit the bell so you are notified when my videos are posted unless you will miss out on future deals. There will be more batteries to come. I have seen huge listings for these batteries and NO ONE bought them for weeks. Now that this video is up, we need to fight for them. It's a bummer, but that's the way it is. I will update the links on this video whenever I see a new listing. Thanks :) I love mine! So glad I got them early on haha! Also!! If you need a super cheap lifepo4 battery, the next best option is the ruixu, which can be found here: www.mobile-solarpower.com/lithium-batteries.html I update the links on my website DAILY and am always checking for new sources, so please check it if you want a good deal.

    DIY Solar Power with Will ProwseDIY Solar Power with Will ProwseAylar önce
    • I can get them for less than $100 each new :) My lead acid batteries are listed at about $400 of your dollars each, I paid $15 each, used, but perfect, just got lucky... no idea why I'm bragging, but there you go :)

      Andy PandyAndy PandyGün önce
    • Are you SURE they have overcurrent protection? I read the manual. Don't see over-current protection. It says they have low voltage, high temp protection yes. But not overcurrent? I'd LOVE to be wrong on this! It'd mean that I'd be fine to squeeze 1500 watts out of 4 of these in parallel, currently, my 40A breakers flip at 1000 watts though.

      Zachary StewartZachary StewartGün önce
    • @Deepak k The bulk of RV systems run at 12V. Going to 24 does let you use thinner wires but makes you need to look for all 24v equipment, which is tough to find.

      Zachary StewartZachary StewartGün önce
    • None of the references are available

      Karla BrewsterKarla Brewster4 gün önce
  • When using a solar charger controller, what are the settings that we need to use in order to properly charge these batteries? I have a RENOGY RoVer 40 amp mppt charger and would need to know this info.

    Goodolboy OneGoodolboy One2 saatler önce
  • 2 of these on an electric bike, oh boy.....

    Johny ActionJohny Action7 saatler önce
  • Annnnndddd they're gone! hahaaa

    Padre-D ProductionsPadre-D Productions8 saatler önce
  • I’m looking at a used forklift battery they tore apart big batteries for 48 V forklift and they made 12 V batteries out of them they recondition them they guarantee them and deliver them free and they have a heck of a lot of capacity

    william foremanwilliam foreman8 saatler önce
  • I connect 2 12 volt in parallel, connected solar across the two batterys ,drew power the same way, yet one battery went dead Both batterys are new and lead acid. One staying full one drained.

    richard leachrichard leach9 saatler önce
    • Any help would be appreciated

      richard leachrichard leach9 saatler önce
  • Can these batteries be used for electric bicycle motors?

    Gabriel AverellGabriel Averell10 saatler önce
  • Dude your voice sounds like Reid from Criminal Minds

    Crusty RustyCrusty Rusty14 saatler önce
  • Great video. I'm guessing that these would be perfect for a sailboat solar installation, probably running 2× 330 watt panels??

    jonno Rousseaujonno Rousseau21 saatler önce
  • Did you say that those batteries are used?

    Robert JohnsonRobert Johnson22 saatler önce
  • Do the loose ends on the battery balancing cables need to be connected to something?

    Deb WilsonDeb WilsonGün önce
  • It's just Crazy! Crazy, crazy, crazy. Crazy, man CRAZY! Crazy! Crazy! Crazy! Really, really nice but CRAZY!!!

    ACTSACTSGün önce
  • they are cheat because lithium has got life spam.

    Papepo MamemoPapepo MamemoGün önce
  • I don’t see the link to the site you purchased yours from. Please share)

    Inga HuffInga HuffGün önce
  • I am definitely wanting to get 2-4 of these. Great video

    Inga HuffInga HuffGün önce
  • I have these batteries but in the 138aH size. I have a Victron SmartSolar charger and was wondering what are the absorption and float voltage settings? I currently using the preset Victron SmartSolar setting of absorb 14.2V and float 13.5V. I thought it was a bit low don't you think? Thanks again in advance!

    eBoarder75eBoarder75Gün önce
  • Really only 40 amp HR batteries? My one battery has 1500 amp hrs. It it cost half that at comparable amp hrs.

    Dan azDan azGün önce
    • Really ... A 1500ah battery I'd love too see that .. you lift it with a forklift or something ?

      BlakeBlakeGün önce
  • The new (old technology) salt water batteries look very promising. Edison batteries can be 100 years old but they still work today.

    Joe ShmoeJoe ShmoeGün önce
  • Dirt cheap? Have you ever bought dirt? It definitely isn't cheap!

    terry wallerterry wallerGün önce
    • Rare earth is dirt

      Steven LonienSteven LonienGün önce
  • U keep repeating yourself it's annoying! !!

    groovetrain2010groovetrain2010Gün önce
  • No use capacitors dirt cheap

    Adnan FnaishAdnan FnaishGün önce
  • Hopefully this information will come in handy

    John MeeganJohn MeeganGün önce
  • I sure wish the price of used batteries would come back down. Your original price was fantastic, but now I feel I am being pushed out of the market. So much more and even the freight seems to have skyrocketed. :(

    Kirk OliverKirk Oliver2 gün önce
  • Hiya Will, just discovered your channel, feel like I am back in college in a class I am really interested in, actually been pausing the video and taking notes.. Been binge watching for the last week or so.. I have a new obsession, my wife's words, I think of it as a hobby... Been hitting Amazon and Ebay pretty hard, packages are rolling in.. Looking forward to reading your book, and I will absolutely be leaving a review... After the rush on the Valence U1-12RT, I purchased a pair of Ironworks 12.8V LiFePO4 40Ah Batteries advertised as "same as Valence U1-12RT Medical" The specs seem to be the same, they have a RJ45 jack not sure what use it might be? I assume it is for the intended equipment would be able to monitor battery status with it? I have not been able to find any information whatsoever about this brand, have you ever heard of them? Opinions? Also have a offer in on the 800w MPP Solar unit.. I saw the 1k unit that is $100.00 cheaper, but it is 230v and I don't know enough yet to make a informed decision if this would fit my needs, I am guessing that wire costs would increase a bit.. I have been a nomad at heart my entire life, and plan to start living the life in regular extended vacations.. Your videos have been a big part of my decision to make the time... You Sir are a inspiration, love your views on finances and outlook on life in general... Be well.. Scott

    Scott KentfieldScott Kentfield2 gün önce
  • Still too expensive for this ol' boy. Have to wait until the batteries come down to COST EFFECTIVE. Though the life of these are long I still can't justify 2k for 200ah.

    Mike StoneMike Stone2 gün önce
  • Did I just watch battery porn??

    1wor1d1wor1d2 gün önce
    • Hahaha I think so

      Imran ArthurImran ArthurGün önce
  • Where can I get an easy diagram of how to make an electrical system with lithium batteries for a travel trailer and still use power source when plugged into shore power? I enjoyed your video and am fascinated with these systems and could a beginner like me set one up! Thanks.

    hanford bracehanford brace2 gün önce
    • www.mobile-solarpower.com

      DIY Solar Power with Will ProwseDIY Solar Power with Will Prowse2 gün önce
  • You don't connect both your positive and negative leads going to the inverter or charge controller to just one battery. You are supposed to connect the positive to one battery and the negative to the other battery, or other end of the battery bank. Use ohms law. Think of them as water tanks. You are pulling water from one tank and water has to flow from other tank to the tank you are drawing water from. There is resistance to flow from one tank to the other, same with batteries. To keep them balanced, you connect to each end of the bank and draw energy equally from all the batteries. As you have it now, everything you are going to draw out if the battery is coming from the one battery you have it connected to.

    Off Grid Texas HomesteadOff Grid Texas Homestead2 gün önce
    • Look at how I wired them again. And yes, I understand ohms law. I am not a beginner

      DIY Solar Power with Will ProwseDIY Solar Power with Will Prowse2 gün önce
  • Looks like the AGM is still the better deal by far.

    solarsynapsesolarsynapse3 gün önce
  • Well Amazon Wants 450 dollars And 30 dollars shipping for these batteries now 8/18/19 for what they are calling refurbish Valences batters and I can get new batteries for that price !

    Ernest ReichardtErnest Reichardt3 gün önce
  • Ty for this. New Sub Here.

    Zofoblues ZofobluesZofoblues Zofoblues3 gün önce
  • we understand, you cheap and easy : )

    Specialized 29erSpecialized 29er3 gün önce
  • Are you the Plantar Fasciitis guy???

    Kevin BeasleyKevin Beasley4 gün önce
    • Haha yes I am

      DIY Solar Power with Will ProwseDIY Solar Power with Will Prowse4 gün önce
  • Will, (or others) hold on, are you sure they have internal over current protection? I read the Users Information and I didn't see that specifically. Is says they have over-voltage, over-temperature and over-discharge protection, but I don't see anything on over-current. Certainly seems to have the ability to shut down, and to measure current, so seems like it could do this, but does it? I have mine on 40A DC breakers, which would have blown instantly if I'd have done what you just did! I have FOUR in parallel and they trip the breakers if I pull much over 1,000 watts off the inverter. If the batteries were each supplying an equal share of the current this wouldn't happen. (unless the breakers aren't really 40A - note that 40A blade fuses do NOT blow) But that's not what happens, one battery apparently supplies most of the current, trips its breaker, this overburdens the other three and about two seconds later the other 3 trip. I can actually influence which one trips first by giving it a lower gauge wire! It's that "unstable". Buuuut, I'd love to find out they can really really handle their own overcurrent conditions by shutting off their own current flow! Maybe they'd even do it in a PWM fashion! Then I could feel safe to remove those breakers and easily power my induction stove to its full 1500W capacity.

    Zachary StewartZachary Stewart4 gün önce
  • Can you open the battery and show us what inside the battery is ?

    Vishan KoendjiVishan Koendji4 gün önce
  • Supporting your channel!!@

    Z-speedZ-speed4 gün önce
  • For dummies, like me, is there a way to test the used battery to know if it's good?

    webmastirwebmastir4 gün önce
  • Great advice! Will these work in 48 volt golf carts?

    Tim RobertsTim Roberts5 gün önce
  • are these capable of being connected in series-parallel? would be great for my old golf cart

    Devon HickmottDevon Hickmott5 gün önce
  • This is so cool! I have an Emphase microinverter system I installed myself. If I wanted to add these batteries for backup power what would be the process? I would want my panels to be able to charge the batteries and produce that syne wave.

    Jonathan BaldwinJonathan Baldwin5 gün önce
  • Can any of these be used in a typical gas-powered car with an alternator charging system?

    douglas eddydouglas eddy5 gün önce
  • Do you have a link for the watt meter for battery

    Jason ChanJason Chan5 gün önce
  • Very cool your eyes 😍

    Karzan KerkukiKarzan Kerkuki5 gün önce
  • Thank you for the video. Cool! Are you still in San Diego?

    Maxim MaximovMaxim Maximov5 gün önce
  • Will, I love your videos. I too bought used batteries from a hospital,, but mine are Panasonic and have L terminals, and I don’t know what cables to use to connect them. Can you do a video on that for me. Thanks

    jeanneewingjeanneewing6 gün önce
  • i have a project with 2,544 valance 12v 1,766wH 138aH LiFePo4 batteries. i can tell you all about how those batteries work. also .. that company is now Lithium Werks

    Robert MooreRobert Moore6 gün önce
    • @top 5 those are mostly like boats, forklifts, buses...ect.. They are just now branching into energy storage. I'm pretty sure my project had a lot to do with that.

      Robert MooreRobert Moore5 gün önce
    • @Robert Moore thanks for all the info. Your project sounds interesting. I am not sure what my used battery was used for before I bought it.

      top 5top 55 gün önce
    • @top 5 if you just don't wanna/cant get your hands on that... to be safe charge it to 13.4v and then let it rest for a few hrs... it will internally balance .... (burn each cell bank with resistors to 3.36v) then hit it again at 5a to ‭14.1‬ .... the closer to the top these get, the faster they go... same for the bottom....and they don't wanna be stored at high or low charge for long times. keep or rest them between 20% and 80%ish... 10v at the terminal is a dead ass battery.. if you see a red flashing light on that battery ..that's no good... its prob over or under charged...it should be green or no light at all.... the board in the side of that thing stops working somewhere under 10v... most times you can wake them back up by applying 13v-14- charger... but every time you do that... your damaging the battery.. also the bms can open the string at critical low voltage . the B connector is for "battery side coms proprietary modbus" and CanBus output to plc.. also analog voltage and soc output.. and bms and battery coms power.. the A connector is where it can control external relays,contactors,chargers,,,ect... we dont use the A connector at all... we use the can bus info to have our PLC's do the rest.

      Robert MooreRobert Moore5 gün önce
    • @UCnOFZJXVJWlmOEJ4Fx6Jxgg thanks for the info. I don't have the software but it would be very cool to pull up the info about the battery. I might buy a second on to make a 24v system but right now I am only using one. I looked all over the internet for the software but could not find it. I would like to know how many cycles and the mfg date of the battery.

      top 5top 55 gün önce
  • Not sure i should ask this but can you use these in a car and have the cars alternator charge them for a audio system

    Martin HensleyMartin Hensley6 gün önce
    • No, the alternator would provide too much charging current.

      Tim ODellTim ODell7 saatler önce
  • The reason the batteries are so good is because they get chanced out on a schedule in Hospital or other med machines. Schedule is usually in months or years?? Not usuage. Used batteries from NYC will be different then Fargo, ND

    Gary SchoonmakerGary Schoonmaker7 gün önce
  • he said solar panels are cheap LMAO!

    JRLMJRLM7 gün önce
    • @JRLM those friggin batteries i need thats gonna cost out the ass to buy... figured i need at least dozen 1000ah batteries and those puppies aint cheap for sure

      Steve StricklandSteve Strickland4 gün önce
    • @JRLM 20 panels at the place i just mentioned would be around a grand plus a little for shipping unless u live nearby..thats over 5000w of solar.. i get about 300 kwh off my elec bill for only 500w system,, 5000w would not only cover my whole 150$ bill every month.. prolly put some juice back on the grid and get a check in the mail , saving up the cash to get all that i need to do just that

      Steve StricklandSteve Strickland4 gün önce
    • TheMrKrause their expensive.

      JRLMJRLM4 gün önce
    • Panels are much less expensive than they used to be... cheap is relative. A new lofepo4 100ah battery might run you 1,000$ but a controller might only cost you 20$ and a solar panel under 100$. In the context presented... I would say it was correct and appropriate to say cheap.

      TheMrKrauseTheMrKrause4 gün önce
    • place out in arz selling used 250w panels for less then a 100 each...

      Steve StricklandSteve Strickland5 gün önce
  • Bro can you make an experiments? about 48volt using super capacitor for e bikes because the regular weight of China ebike battery is 10kg or more.

    Enrique AtentarEnrique Atentar7 gün önce
  • Possibly keep your hands away from the terminals while making videos?

    Steven AustinSteven Austin7 gün önce
    • Watch my beginner videos or learn about ohm's law.

      DIY Solar Power with Will ProwseDIY Solar Power with Will Prowse7 gün önce
    • It's fine. 12v is safe as hell

      DIY Solar Power with Will ProwseDIY Solar Power with Will Prowse7 gün önce
  • Sadly in the EU it's against the law to sell used batteries, they have to go to a licensed recycler.

    Robert DrinkallRobert Drinkall7 gün önce
  • Even as used batteries they are very high quality. As a FYI New these are selling from $900.00 to 1200.00 each. At the hospital that I work at I have seen units that are 8+ years old. I have spoken to the factory tech support and engineer he states that they have units that are over 10 years old and still running at top performance. You might look in to the charging head units that are made by triplight if you can find them, or scavenge them from the medical carts that the batteries are pulled from.

    StrayzshadowStrayzshadow8 gün önce
  • What devices are they in so I can rob my hospital?

    xlioilxxlioilx9 gün önce
  • none on ebay at all.. too many people bought after watching this.

    xlioilxxlioilx9 gün önce
  • I work in the telecommunications industry. Once, after a site took lightning, we had multiple battery failures in the -48V battery system. Solar and wind systems are going to take lightning hits. Do you really think it's wise to use this battery technology, which is dependent on a solid-state BMS to avoid destruction, in a system that will eventually take a lightning hit? To me, these batteries are an excellent way to burn my house down. I avoid them both at work and home.

    Karl PfistenhammerKarl Pfistenhammer9 gün önce
    • LiFePO4 is non combustible. You need to hit the books buddy, maybe you're not up to date with li-ion chemistries. This is used in medical carts in hospitals with multiple protection features, it's fine. If you would like to present an argument with some part of the schematic, let me know. And going by your experience, it sounds like you have no clue about LiFePO4.

      DIY Solar Power with Will ProwseDIY Solar Power with Will Prowse9 gün önce
    • Hahahahhaha is this a joke

      DIY Solar Power with Will ProwseDIY Solar Power with Will Prowse9 gün önce
  • He's waving his hands around the posts and freaking me out with the lack of safety habits. Look at his arm laying over the post and his hands gestures on the grounded surfaces and other posts. INSANE.

    Top Pay PositionTop Pay Position9 gün önce
    • It's fine. Ohms law. Skin is dry

      DIY Solar Power with Will ProwseDIY Solar Power with Will Prowse9 gün önce
  • Great vid bro, just subscribed

    Jackson DuvalJackson Duval9 gün önce
  • Until they explode

    Schnozistan CzarSchnozistan Czar9 gün önce
  • Thanks for the useful and informative video, can I connect multiple batteries in parallel to inverter to bump up good supply of current and leave it upto the inverter to manage the voltage and amperage for the concerned device connected to the inverter?

    AG.AG.9 gün önce
  • $400 is that cheap for you wow your rich

    Salvy GonzySalvy Gonzy9 gün önce
  • 12v lead acid car batteries are about £50 to 80 new in england where are you getting yours, ?

    Phil ChurchPhil Church9 gün önce
    • Car batteries are for high current drains and have small capacity. They are not usable for a deep cycle application

      MiG21aholicMiG21aholic9 gün önce
  • they gone...

    Magnetic Fishing MadnessMagnetic Fishing Madness9 gün önce
  • So is this video for car audio, or for cars?

    Chrisnas1Chrisnas19 gün önce
  • Solar Geek you are newest superhero

    Brian JoyceBrian Joyce10 gün önce
  • I have a lake cabin with no power. I would like to power a small refrigerator, mobile devices and lights. Where do I start?

    Jasen JahnJasen Jahn10 gün önce
    • Call me and I will sort it out....

      ScrumpyhunterScrumpyhunter4 gün önce
  • Seems that if you owned an electric or hybrid vehicle you could access and use its battery bank to increase your capacity in an emergency situation. Preferably without disabling the vehicle.

    The1stDukeDroklarThe1stDukeDroklar10 gün önce
  • Why do you have pb acid batteries as SO expensive? 350-450 USD??? Over here, you can buy them brand new for around £50, which is 60 US dollars....

    Debbiebabe69Debbiebabe6910 gün önce
    • No, those are solar pb acid. Totally different

      DIY Solar Power with Will ProwseDIY Solar Power with Will Prowse10 gün önce
  • I want some Will !!!!

    Jack ColemanJack Coleman10 gün önce
  • Everything you said is a whole different language to me. Not sure what the tests were that you ran. If you ran a 50 amp RV on them, how long would they last at full charge before needing to be charged again?

    Kellie RKellie R10 gün önce
    • I would say around 1.5 hours. Not enough details.

      nessotrin jeannessotrin jean10 gün önce
Dirt Cheap Lithium Battery! Cheaper than Lead Acid. You will love this thing!