Introducing the Kepworth 12v 100Ah lifepo4 Battery, including Teardown

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Li-Time Mini Battery link is uk.litime.com/?ref=t2nvwo1x or Amazon - amzn.to/492991I
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DCHOUSE Lifepo4 Battery Links -
These batteries are available via Amazon amzn.to/4eoGB6h and eBay - ebay.us/cBWn3I
They also have a 12V 200Ah version on eBay - ebay.us/x0xoH6 and a 24V 100Ah ebay.us/4P4QmB (clicking these links will take you to eBay)
Li-Time Mini Battery link is uk.litime.com/?ref=t2nvwo1x
or Amazon - amzn.to/4ewMjTM
Clamp Meter -amzn.to/4cyIxqX or eBay ebay.us/wwtUna
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Fogstar Drift 105Ah LifePO4 Heat/BT www.fogstar-drift.co.uk/?ref=...
---Solar Charge Controllers -
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Inverters------
Edecoa 3500W - amzn.to/4cxwM46
Renogy 3000W - amzn.to/3KR9NVY
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Battery Chargers
Victron IP22 30A Smart Charger - amzn.to/4ce8U66
As an amazon Affiliate I will earn commissions from sales made using my links at no extra cost to you and all links are affiliated with vendors.

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Опубликовано:

18 мар 2022

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Комментарии : 102

@lifeisfuneh 8 месяцев назад

Thank you! Got the same battery but branded Fllyrower.

@DCGUY 8 месяцев назад

Thanks for the info.

@anaspatel3625 2 года назад

Great video never seen a charge port like that on the side of the battery. It will be interesting to see how the capacity test turns out. A lot of these batteries seem to come with rubbish baddly made chargers that get very hot fairly quickly. With LFP I've found its best to use a charger with a metallic case with a decent fan unless you don't want to risk burning your charger up over time keep the videos coming.

@DCGUY 2 года назад

Really appreciate your support. Thank you so much. Its the 1st battery I've seen with "extra's". Bit gimmicky for me but probably useful for others. The "free" charger that came with the battery actually put out 7 amps, but I only tried it for a moment. It is cheap and yes I will stay with my Victron.

@BeepingMad Год назад

Thanks again after watching again I have just bought three 24v 100ah ones.

@DCGUY Год назад

Thanks for watching and taking time to comment. Welcome to the lifepo4 family. Let me know how you get on, cheers 🍻

@BeepingMad Год назад

@@DCGUY they are brilliant

@DCGUY Год назад

@@BeepingMad stay tuned for another video on this battery 😉

@BeepingMad Год назад

@@DCGUY will do

@BeepingMad Год назад

@@DCGUY just before i pay for another one. Please tell me it is not a video where it goes horribly wrong

@Dirt-Diggler 2 года назад

That looks at first glance a decent battery 🤔 fingers crossed for the capacity test 🤞 Your certainly putting your money up for the channel chap 👍 i see the subs are going up, well done 😎

@DCGUY 2 года назад

Your support means a lot so many thanks. Yes I have dropped a few quid but if it means it saves someone else money in the longer term, I can live with that. Hopefully the channel will grow as that may help me fund the videos a bit. But that's a long way away.

@Dirt-Diggler 2 года назад

@@DCGUY the channel should grow fast as you put out a good product 👍 I wish i was half as good at producing videos as you 😏 christ an eighth would do 😇 🤣🤣 Keep it up chap, you'll get there 😎

@bikevantravel5878 2 года назад

Danke für das Video. Ich hab ebenfalls 3 akkus der Marke

@DCGUY 2 года назад

Danke fürs zuschauen

@Sonntagsrocker 2 года назад

Hallo, wie bist du mit den Akkus bis jetzt zufrieden? Ich möchte meine 24V Blei-Säure Solaranlage gerne auf Lifepo4 umrüsten. Die Kepworth 24V/100Ah kostet auf Amazon aktuell 788€, was im Vergleich zu anderen Anbietern (1000€+) unschlagbar günstig wäre. Ich suche aber noch nach dem Hacken an der Nummer? ✌️ 😅

@DCGUY 2 года назад

s.click.aliexpress.com/e/_Aq5rSl 24v 200Ah

@1smct 3 месяца назад

great content, have you thought about doing a review in a Tungolf battery from amazon thats £199 at the moment?

@DCGUY 3 месяца назад

Hi, haven't heard of them until now, if they reach out I will consider doing something.

@TruthTortoise81 2 года назад

Hi, great review. Did you discover if it has low temperature protection on the BMS? I know that some of these batteries prevent charging when the temperature drops too low, but many do not have this feature.

@DCGUY 2 года назад

Thanks for watching and taking time to comment 🙏 it's appreciated. There is no low temperature protection built in only over temperature (thermal 75⁰)

@markw1685 Год назад

My previous post I brought two 12v 200w lithium batteries (kepworth make) Chinese made UPDATE Well these run My fridge freezer My wifi box with my cctv camera As well as my air fryer 30 minutes use 1400w. It recharges my 4 AGMs during the day when they drop to 60% Also recharges my tablet and mobile phone. And the past two days we hav3 had very little sun on my balcony so they have had no daytime charging 25w max input on my MPPT. They get hourly voltage check over this weekend as i was home and the voltage hasn't dropped below 26v. In General for £650 Each you wouldn't expect Grade A cells But so far they do appear to be topnotch they are off mains from 7am to midnight where they go on to mains for charging for seven hours. Hope this little update makes sense

@DCGUY Год назад

That's great to know, many thanks for the update its very helpful 😀 👍

@patrickdate8268 4 месяца назад

Hi dc guy, can you tell is 30amps the maximum charging amps are this battery,, can using a renogy 50 amp dc to dc charger. Many pat again great video.

@DCGUY 4 месяца назад

They say 0.5c charge rate so maximum of 50 amps

@Malburn 2 года назад

Thank you for doing this disassembly, I'd been considering one of these, but ended up buying an Ultramax 100ah Lifepo4 instead. I've yet to see anyone review, let alone strip an Ultramax, but hopefully it's a slightly better made battery. Was thinking about saving a few quid and buying a Kepworth to make a 24v system, but is it a bad idea to mix different brands of Lifepo4? My gut says probably ⚡

@DCGUY 2 года назад

Thank you for watching and taking time to comment 🙏 You raise a great question 👍 mixing different brands of lifepo4 while technically possible if you know what cells and battery management systems are utilised, it isn't generally advised. If for example Ultramax are simply a rebranded Eco-worthy and I'm not saying they are, but if so you could presume same BMS and cells are used so compatible with each other. But that's the problem, a consumer isn't going to open a battery or perhaps have the knowledge to identify these things properly. Then there's the warranty issues. So best to stick to the brands you know and trust. I'm doing a video on ultramax and renogy 100ah batteries in the near future.

@Malburn 2 года назад

@@DCGUYThank you, that's good advice. I will buy another Ultramax fairly soon, if the one I own continues to perform well. The model I have (LI100-BLU) has built in bluetooth, which I must admit is great to have. It's not the most sophisticated, but it's very useful and seems accurate matching my Uni-T clamp meter. I would fall over myself to know what is inside the Ultramax! lol. Subscribed and looking forward to your future videos 🙂

@DCGUY 2 года назад

Thank you for the support 🙏

@kennymurray2231 2 года назад

Hi can you tell me where you bought the battery from please I saw them on amazon but they are quite expensive 🤔

@DCGUY 2 года назад

Hi, many thanks for watching and taking time to comment. There's a link to the store in the description which is where I purchased mine.

@jyripakka2730 Год назад

hello, I saw that your first video about this battery was made a year ago. how has the battery fared? I'm interested in buying that battery, but I'm wondering if it's a good purchase.

@DCGUY Год назад

Hi, I sacrificed that battery for a safety test . But it was fine till then.

@jyripakka2730 Год назад

@@DCGUY okey. how long did you manage to test and use the battery? it has become a "new version" which apparently uses eva cells

@DCGUY Год назад

I used it for several months, no issues to report. I only sacrificed a cell as I'd damaged it during my teardown, but it was working fine. Be interesting to see the newer version 😀

@GoldenTVClassics Год назад

Well I'm finally going to bite the bullet and buy two of these 200ah Got a good deal

@DCGUY Год назад

Let us know how things go, your feedback will help others. Cheers!

@BeepingMad Год назад

Thank you for your review, I am now going to buy one. I am a absolute novice if I buy one from China please could I ask what the import tax and Vat was or round abouts. Many thanks geoff

@DCGUY Год назад

Hi thanks for watching and taking time to comment. I bought mine from aliexpress ( should be a link in the video ) and they had uk based stock, so no taxes. They are also doing a version with Bluetooth as well I believe. Take a look at the eco worthy and ultramax battery too. The eco worthy go on sale often but its what you can afford that matters.

@BeepingMad Год назад

@@DCGUY thank you, i will pull the trigger on the order now. Thanks again

@DCGUY Год назад

@@BeepingMad welcome to the lifepo4 family 👪

@lebon2002be Год назад

I need a battery with these dimensions, surely with 19cm high. Good or bad I have no other options. Under the passenger seat of my rv I have room for 2 batteries in parallel and the max height is 19.5cm. any suggestions? Maybe a better battery brand with the same dimensions? I'm all ears. :-) thanks for the video.

@DCGUY Год назад

Thanks for watching and taking time to comment 🙏 it's appreciated. For an RV, you'd be better using a self heating battery if your RV ever sees freezing temperatures. They are expensive compared to other non heated units. Renogy are OK, bad customer service. SOK expensive as are victron. You could perhaps consider building your own custom battery? Not knowing where you are located makes it difficult to suggest a particular battery, so many options out there depending where you are in the world 🌎

@BeepingMad Год назад

Hi since last talked in the comments I have installed 3 24v 100ah batteries in parallel. My question is how many of these can I put in parallel. Ideally I would like 6. Do you think this can be done? I know nothing about BMS many thanks in advance

@DCGUY Год назад

I'm afraid I don't know the answer to this as I don't know what BMS they are using. As a general rule of thumb many manufacturers suggest a max of 4 in parallel but that's probably them not wanting liability. I'd contact the manufacturer/ supplier and ask for the BMS data as well as your question. I currently have 4 12v 100ah in parallel but I also have a MRBF on each positive rated at 100 amps and a T class fuse as my last resort. The issue is the BMS. Should it fail open, which is usually unlikely in normal circumstances, I do tend to err on the side of caution.

@BeepingMad Год назад

@@DCGUY thank you will also install inline fuses between batteries.

@johnshaw359 Год назад

I went for the Kepworth 12v 100Ah for a trial into these batteries, USB ports a nice bonus as was the included charger, I'm not too bothered about the absolute quality of the cells TBH as lifepo4 is sort of safe, stable and pretty durable from what I've been led to believe, my application is not critical. It will be feeding an inverter mainly. Very lightweight gets a bit of getting used to and opens up further usage possibilities, so looking forward to using it as much as possible, also I think I could fit a new BMS if I had to from what I've seen in the tear down if it fails.

@DCGUY Год назад

Thanks for watching and taking time to comment 🙏 Yes these lifepo4 cells are safe, I took one and drilled the heck out of it, it did get warm but no fire and that's all I cared about.

@user-sx4ol5ur4l 16 дней назад

Hello! Please tell me whether the indicator on the charger indicates the battery is fully charged. Does the indicator always light up red or change color to green when charging is complete?

@DCGUY 16 дней назад

My own shows a red light when charging and goes green when charged and the fan stops at that point too. If yours is red and the fan is still running then it is still charging

@user-sx4ol5ur4l 16 дней назад

@@DCGUY Thank you very much for your answer! One more question: Do I need to press the power button on the battery near the charging and USB connector when connecting a standard charger? I read people's opinions that without turning on this button, charging is impossible. Is it so?

@DCGUY 16 дней назад

@@user-sx4ol5ur4l The button only supplies power to the USB ports and has no impact on charging function.

@andysingletonefc Год назад

I have £370 for one of these, got one in my ebay cart, it’s for my electric outbord/sonar, whats your 100% opinion are the 12v 100ah worth buying ? Cheers

@DCGUY Год назад

Not sure it's entirely suitable for a marine environment. For similar money the fogstar is probably a better deal..

@andysingletonefc Год назад

Thanks just pre ordered off FG can the 105ah fogstar be charged with a normal 12v battery charger/what charger these are new to me as ive been using lead acid for years, all looks technical, just want to charrge it up and go fishing 🎣 😩

@DCGUY Год назад

@@andysingletonefc yes you can use a normal 12v charger.

@andysingletonefc Год назад

Thanks for your help DC much appreciated 👍

@andthesunsets Год назад

That BMS seems inadequate

@tonykwalsh 9 месяцев назад

Is this battery still good after many 1000w load usages ?

@DCGUY 9 месяцев назад

Unfortunately, I sacrificed this battery for a puncture test.

@dmitrijit5851 6 месяцев назад

Can you please check and let know if BMS is cutting off charge at low temperatures ?

@DCGUY 6 месяцев назад

This particular battery has no low temperature charge protection. As such do not charge if it's frozen but can be discharged.

@dmitrijit5851 6 месяцев назад

@@DCGUY - is it possible to connect temperature sensor to current BMS ?

@DCGUY 6 месяцев назад

@dmitrijit5851 unfortunately not. You can make a DIY battery heater or if your solar controller has the option to stop charge at low temperature. You will find info on battery heating at www.dcguy.co.uk

@ATI331 9 месяцев назад

Hi :). What's your opinion on this battery 1 year later?

@DCGUY 9 месяцев назад

I actually sacrifice this battery for a puncture safety test, so can't give an opinion.

@ATI331 9 месяцев назад

Would you buy another?@@DCGUY

@DCGUY 9 месяцев назад

Probably not now due to the vast amount of new players like fogstar

@ATI331 9 месяцев назад

Thanks, hadn't heard of them@@DCGUY

@kirsty6543 9 месяцев назад

Hi, I got the Bluetooth version of this, and the Bluetooth now won't connect a few days later, any ideas please? I have discharged but it still will not connect 😕

@DCGUY 9 месяцев назад

Do you mean you re charged? But unable to connect?

@kirsty6543 9 месяцев назад

@DCGUY hi, I have done both, it was over 50% charge when it disconnected, I have discharged then recharged still nothing tried deleting the app and re downloading it on multiple devices nothing seems to work

@kirsty6543 9 месяцев назад

Do you think the Bluetooth is separate from the bms? Or would it be one unit? Is it a bms issue do you think? The battery still seems to be charging fine but I obviously cannot monitor what's going in or out properly 🤔

@DCGUY 9 месяцев назад

@kirsty6543 I haven't seen the internals but almost all BT modules are separate units that are connected by a plug to the BMS. You may need to sweep the battery up close use Bluetooth search function on your phone, not the App and see if it gets detected. Failing this the only option would be to contact the company and see what support they give. Please let us know what happens.

@kirsty6543 9 месяцев назад

@DCGUY thank you, that's possibly why the Bluetooth will not connect but the battery still seems to charge, I might send it back for a replacement if I'm honest, i cannot find any videos with anyone opening the bluetooth versions, otherwise i may have attempted it. I have tried to search on Bluetooth (not on the app) and it will not show at all, it's like it has tripped out and you cannot find the device, nightmare, not much information available for the Bluetooth ones, I will keep you updated! Aside from the Bluetooth not working I do think it is a good battery!

@HrhFish Год назад

Is there a way of testing the amp hours?

@DCGUY Год назад

Hi, thanks for watching and taking time to comment. There are are various online calculation sources and methods but they all require you fully charge the battery, then discharge at a set rate eg 10 amps DC @ 12v (120w) should give 10 hours with a 100ah lifepo4 ( 5 hours lead acid). I use a shunt as well as a battery tester from AliExpress DL24M 600w tester or a single 180w tester. Atorch store.

@davidlulham9327 2 года назад

Search "kepworth" there is a another video (French language). The guy explains that this battery is poor quality and does not hold charge after only 4 months use. It uses poor quality pouch cells.

@DCGUY 2 года назад

Thanks for watching and taking time to comment 🙏 it's appreciated. It's something of a lottery with budget brands using grade b cells, I'm still trialing this battery but so far so good. Time will tell.

@markweatherall7437 Год назад

@@DCGUY Just an update, I purchased the Kepworth 120ah for my Trolling Motor and its been absolutely golden, no problem at all with it. Paid extra for the 120ah and all good so far.

@georgeknowles5384 2 года назад

What's with a three pin charger plug?!! Why 3pin?

@DCGUY 2 года назад

Hi thanks for watching and taking time to comment. Good question, maybe the 3 pin was what they had available as it only used 2 one for live and other neutral.

@johnshaw359 Год назад

Non-reversible, no possibility of forcing it even with a "key fitting" is all I can think of as these plugs go from 2 pin to 16 pins.

@boyansilyavski8289 Год назад

so is it a OK battery ? looking to buy one here locally.

@DCGUY Год назад

For the price I paid I can't complain, its been ok to date.

@raysvids2693 Год назад

are those lipo cels

@DCGUY Год назад

Lifepo4 cells.

@raysvids2693 Год назад

@@DCGUY they look like lipo cells

@DCGUY Год назад

Yes, but a different chemistry. I tested a cell by puncturing it, it's definitely lifepo4.

@raysvids2693 Год назад

@@DCGUY so on the outside they are look like lipo but on the inside they are lifepo4

@DCGUY Год назад

Yes, pouch cells look the same but the battery chemistry is totally different. If they were lipo cells I would not have them in the house. I used to use lipo with rc stuff and those things are volatile and highly combustible.

@jean-louisromano3710 Год назад

J'ai acheté une batterie pour moto défectueuse Aliexpress n'a rien voulu savoir et KEPWORTH a proposé de renvoyer à mes frais la batterie pour l'expertiser, ce que je n'ai pas fait car les frais de transport étaient disproportionnés par rapport au pris de la batterie (+ de 100€ quand même) Je l'ai autopsié en découpant précautionneusement le haut du boitier et à l'intérieur l'un des éléments (comme un sac souple) avait un volume 4 fois plus grand que les autres.... Aliexpress est une vraie arnaque car ne protège pas le client mais le vendeur, le délai de dépôt des avis et celui de retour d'un article défectueux est bien trop faibleen cas de problème.

@DCGUY Год назад

C'est vraiment dommage, merci d'avoir partagé votre expérience