Low priced LiFePO4 Batteries vs High priced

[davil]

My intention is to open a thread dedicated ONLY to LOW END PRICED Batteries

Please, limit postings to the stated heading.
Be specific to brands or types.

There are many threads dedicated to different aspects of LiFePO4 installation and technical considerations, more than 1000 postings!

My goal is to find answers to the following questions

What makes prices so widely different, with extremes from a few hundred dollars ($ 370) to over ($ 1000) for a common 100AH unit.

Have spent considerable time on Google, Brand sites,Rod's comprehensive review (Marine How)

Looked at customer reviews on Amazon for different brands.

The usual answer "you get what you pay for" does not necessarily provide logical explanations.

Depending on type of sailing, cruising, variables such as charging and monitor systems not all owners have the same needs and perhaps installing the top of the line may be an overkill IF having facts to make an informed decision.

Findings

These are some of the points that try to explain the reasons for price disparity.

Quality of product, such as cells not properly secured, protected and separated inside box.

Type, not all use same technology, been the preferred Prismatic vs Cylindrical.

BMS crucial element and a weak point on lower end prices.

Amazon listing over 4000 reviews with each one purchasing more than one battery brings a possible usage of 10000? units? with mostly positive experiences.

As reference, these are some of the more rated/purchased brands

CHINS LiFePO4 Battery 12V 100AH Lithium Battery - Built-in 100A BMS,

Ampere Time LiFePO4 Deep Cycle Battery 12V 100Ah with Built-in 100A BMS