Massive 12V 410Ah LiFePO4 Battery by Power Queen, Review & Teardown

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(3% Discount Code "POWER QUEEN")

Today's review will feature the largest 12V LiFePO4 battery that we have reviewed thus far. This is the 410Ah model from Power Queen. What a beast this battery is featuring eight GFB 206Ah cells!

*WARNING:* Lithium batteries are dangerous and can result in fire! This video is NOT intended to be instructional or a "how-to" lesson. I am not a professional. Do not attempt anything you see here without first contacting a certified and/or licensed professional.

*Chapters:*
00:00 Introduction
00:37 Overview & Manual
02:12 Capacity Testing
02:55 Disassembly
05:38 BMS Overview
07:13 High-Temp Test
07:47 Conclusions

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*Disclaimers and Statements:*
► I receive a small commission on purchases made using my affiliated links shared the video description and comments section. The views and opinions expressed here are my own, unbiased, and not influenced by this commission in any way.
► My videos are in no way intended to be instructional "how-to" lessons. I am simply documenting my project for informational purposes. Property damage, personal injury, or death may result, even when following manufacturer's instructions. I cannot be held liable for such damage or injury. It is YOUR OBLIGATION to ensure that you are complying with any local and federal laws as well as code and permit requirements.

[twloughlin]

THE CLICK IS BACK! It's reviewers like you and others doing rigorous teardowns that have forced these companies to make high quality products! Thanks!

[stephenchristian]

just bought 2 100A 12V for my camper i'm so damn happy 1 month in just 120-140w on my roof & im charged up in no time & man they hold power all night, now i have to say after 2/h years in my camper i see how much I would love to have this 1 batt! With some work I could make it fit but it would not be easy. If I had just bought the camper this week I would for certain go for some extra construction & go for 1 of these, the big battery I think is the way to go!

[moparkr]

just found your channel, first video i watched. never seen anyone unbox and rip apart a $1500 battery so fast, cant wait to see more!

[catchfrubert]

I would love to have a big enough budget to have 16 of these batteries in a 4s4p configuration and 15kw to 20kw of solar on my roof with one of those awesome 12Kw all in one Sol Ark inverter systems or maybe a big enough Victron system to handle the whole house and the 240v split phase stuff. It would be magical to produce more energy than my whole house uses per day, but my dream 20kw solar system and the 82Kwh of Lifepo4 batteries, plus inverters/solar charge controllers, etc, would end up being a $50, 000 system. Its tough to imagine spending $50k on solar and batteries when my house isn't that big and probably doesn't need that amount of solar, but I want enough battery power to get me through a few days of winter with snow in the northeast

[OmahaWayne]

Great review, The stuff on the chips is "Thermally Conductive Adhesive Transfer Tape" or thermal tape. You see it a lot in the PC world for cooling high speed ram.

[norm]

I don’t understand how they dissipate the heat generated by the BMS in a sealed environment. Would like to see a test where you run a full 250A load and see how long it lasts.

[ronny]

Super Video danke alles gute 2023 👌☘️👍😊

[myhificloud]

With this being one of the first BMS rated at 250A on the market, in this form factor, I would like to pose a question regarding the potentially undersized pair of 6 gauge conductors bridging (BMS > two 6 gauge copper conductors > m8 Epoxy Terminals) to support 500A Peak load for 55 seconds.

This question relates to a use case of one Power Queen 12.8V 410A battery in an RV that may require a full 500A draw for the rated 55 seconds, permitted by the VIP 250A BMS specifications.

Question: Would the set of two 6 gauge copper conductors, that create the bridge between the 250A continuous BMS (500A Peak) and the m8 epoxy terminals, be sufficient to support a 500A Peak load for 55 seconds, while not becoming the fuse (read: fire hazard)?

For example:
On the Power Queen 12.8V 410Ah battery, between the 250A BMS and m8 epoxy terminal connections, there are two 6 gauge copper conductors. However, at the provided conductor length, a single 6 gauge copper conductor affords a maximum rating of 65A @ 75°C (167°F) for a continuous 12V load.

Ampacity of a 6 gauge copper conductor, at an ambient temperature of 75°C (167°F) = 65A
6 gauge copper conductor: Max. Amp Load (Accounting For 80% NEC Rule) = 65A Ampacity × 0.8 = 52 Amps or 624 Watts continuous load.

I (Amps) × V (Volts) = P (Watts)
52A x 12V = 624W

4/0 AWG (0000) gauge wire can handle the largest amount of current of any AWG gauge wire. At 75°C, the 4/0 copper wire ampacity is 230 amp contiuous load (with 195 amps and 260 amps at 60°C and 90°C temperature, respectively.

VIP 250A BMS: However, the VIP 250A continuous BMS permits a 500A Peak load for 55 seconds, producing:

I (Amps) × V (Volts) = P (Watts)
500A x 12V = 6000W

or

I (Amps) = P (Watts) / 12V
500A = 6000W / 12V

It would appear the two 6 gauge copper conductors that create the bridge between the VIP 250A BMS and the epoxy m8 terminals would likely become the fuse, thus requiring a more appropriately sized gauge conductor (read: 4/0, 0000) to create the bridge between the 250A BMS and m8 epoxy terminal connections.

[durbledurb]

The thermal pads are called exactly what you called them. They are mostly used on low-power portable device processors or power-delivery elements such as MOSFETS (basically a power-delivery switch) on GPUs and sometimes on computer motherboards that don't get quite hot enough to warrant their own active cooling system - The pads will usually be touching the cooling plate of the part that needs the most cooling. I'd guess that the fact that they've used them here is a sign that this is a quality product. Cheaper consumer computing hardware wouldn't generally have these pads. Thanks for the video. You can probbaly guess from the comment why I'm watching your very informative video. Panels and portable power station first. Now it's time for the real deal!

[jedics]

Ive always been a raw cells kind of guy because it just works out so much cheaper but if the price falls a bit further I might end up going this way so could just buy an all in one mpp solar charger/inverter, plug it all together and Im done. These sealed units are still at least 30% more expensive than raw cells but are obviously more hassle to build a set up...I will have to consider them as an option for my next build though.

[bruceeverett]

Uncanny how you pulled exactly the rated watt/hrs on the test -- 5248! Impressive.

[kissingbanditt]

Just bought this battery. Very pumped.

[gregdoswalt]

Thank you for the detailed review! My main question for all batterys is: What is the expected life span? Will it last long enought to pay for itself?

[mrhalfstep]

Really wish you had done a 250 amp draw test to verify that it would maintain that indefinitely and not just as a surge. That high discharge rate is what really makes this attractive to me. Would run one very large inverter or maybe several separate mid-sized inverters at the same time. Lots of versatility if it can actually deliver that 250 amps. I'm glad you did verify its capacity rating at least. Interesting tear down.

[s.mendez]

Aluminum for conductors? Wonder how they look on a thermal gun during high current charging.

[canyondan]

What a monster. Great video, Thank you for posting

[garyschultz]

Something doesn't quite jive with the 2-#6 leads to the terminals.
I'm in the market to purchase lithium batteries for my home, and the Power Queen caught me eye. So I'm glad you opened it up so we as consumers could see.
#6 is only rated for 60 Amps, even though the leads are short, I'd be a little skeptical to take it past 125 Amps continuous.

[closetcleaner]

Not a fan of the construction. The terminal connections on the sides of the battery are a concern. Also the BMS, internal wire gauge and heat management. I like that it's easy to take apart, except the welded connect among the cells.

[colormaker]

Would like to see charging options for 48 volt lifepower batteries. I have been looking at the Bigbattery 240 volt 50amp charger but no one has done a review that I can find. Thats a big battery great review

[KUL]

I have monitored the temps in the front compartment of my RV and when it is -10 deg C outside it comes too close for comfort to having a Lifepo4 battery without low temp cutoff. I am curious about the 84 amp recommended charging level, many others in this category state a 112 amp recommendations, still others are 200 amps. I am trying to determine if this is a limitation in the internal wiring size, BMS, or a combo of both. We have 1440 watts of solar at our RV due to being in a canyon & limited charging window, thus I have to find a Lifepo4 battery with a low temperature cutoff and enough charging capacity to accept at least 120 amps without any damage to longevity or performance. Thanks, David