Anyone try the off brand lithium 12v batteries?

[TWIH]

Just wondering if anyone has purchased and tried out one of the Chinese lithium knock-off batteries that have popped up in the last couple months on Amazon.  They range from $500-$800 all claiming the bms for over-temp, low voltage cutoffs. 
Reviews are generally positive and don't seem to be "boilerplate" type (...these are very good, I recommend...) or somebody at least tried to vary the wording and could spell.

Here's the current crop of budget offerings:

Amperetime 100a $569

Weize 100a $549 

ExpertPower 100a $789

Chins 100a $539

FlyPower 100a $486

Scremower 100a $486

PowerQueen 100a $539

MightyMax 100a $599


They range from 3 to 178 reviews... 

(Whomever makes up these product/brand names is, well, needing to watch more old westerns or something.  Scrmower and Flypower?)   

[frater secessus]

Will Prowse on YT has been doing teardowns of some of the budget LFP  The Ampere Time one looked particularly well-built, though it lacked the low-temp cutoff.  Have to use heat tape or something if camping in the cold.

[Scott7022]

I know I am a fanboy. They are all Chinese batteries. Even Battleborn. The standard which all are measured against. The batteries. The construction, BB, is pure USA. But the cells, batteries, are China.

Will has a list of batteries on his recommendation page in his forum. Worth a look if you are doing your research.

He recently pulled BigBattery recommendations because of leaking cells. So he is proactive.


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[heron]

Glad to hear someone’s doing the research. As to reviews on Amazon, I recently received a coupon thingy promising a $15 Amazon gift card in return for a five star review and written recommendation. Don’t even remember what for. Nothing that would be dangerous if someone took my recommendation, but I was appalled.

[tx2sturgis]

Some of the unscrupulous vendors on Amazon (and ebay and even Walmart) are sending out very inexpensive items to random addresses just to get official UPS or USPS or FedEx tracking numbers... so now they now have a tracking number which can be associated with an expensive item, and then someone gets compensated for posting a positively wonderful but fake review for the expensive item...and sometimes you can spot these because of the poor grammatical form, spelling, and syntax.

It's a jungle out there!

[sternwake]

Product reviews on Amazon and others have largely been misleading jokes/lies/alternative facts, for quite a while now.

Read all the 5 star product reviews, and find a few more than a few sentences long. Does the author show any respect towards grammar, or show any knowledge on the product or task the product is intended for?

Same on the one and two star reviews.

"It sucks yo, don't waste your money"

Is as easily dismissed as 'OMG it is so awesome!!! 5 stars all day long!!!'

There are a few good legitimate product reviews, but one has to search them out, and be discerning as to the intent/intelligence/integrity of the author.

There's also tons of reviews, reviewing a completely different product, and sometimes a tangeltially related product.

By and large integrity has flown out the window, and greed rules all, and caveat emptor has never been a more valid sayng.
In the quest for maximum profit, the internet has made it possible for the snake oil salesmen to proliferate without consequence, as so many believe it's only wrong if you get caught, and then only if the consequence of getting caught outweighs the potential profits.

Many who get caught revel in proclaiming themselves victims, both before their behavior, and after, and their whole lives revolve around this process.

I'm still sitting on the Lithium fence, so no opinions. Good that Will Prowse is on it and seems honest and knowledgeable.

Nothing beats honest and knowledgeable integrity, and hopefully such behavior gets rewarded more than the opposite, but I won't be holding my breath, as people by and large suck more and more each and every day as they seek to fill the hole in their vapid soul with shiny disposable increasingly toxic objects.

[TWIH]

I'm still far away from even needing a dedicated house battery (thanks to a job where I can charge anything up during the 8 hrs there) however I continue to be intrigued by the charging curve possibilities.

Using a DC to DC charger of the right size for your alternator and with maybe an hour a day of actual driving (not idling) that could be between 20 and 40 amps going back in. Having a 12v dc fridg and a fan or two likely would not use that much so it seems like a good way to do things. The main benefit being no need to 100% recharge to prevent sulfation.

The issue is the quality level of the cells, assembly and the bms. I could deal with the low-temp charging issue by using a simple on/off switch. It's the rest of the "quality" I'd be wondering about. Hopefully WP or others will do more destructive testing and we can weed out the wanna be's.

[tx2sturgis]

Bioenno batteries are well known in the ham radio hobby...not as well known in the RV world, but they should be....

They have a variety of LFP batteries in a range of sizes and capacities:

https://www.bioennopower.com/collections...-batteries

This one in particular, with a pure sine inverter ziptied to one side and the compatible charger zip tied to the other side would make a handy roll-yer-own power pack:

https://www.bioennopower.com/collections...-blf-1260l

Of course they sell their own ready-to-use power packs:

https://www.bioennopower.com/collections...er-station