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Open Roads Forum  >  Tech Issues

 > Lithium cost keep dropping!

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free radical

Canada

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Posted: 10/03/21 06:59pm Link  |  Quote  |  Print  |  Notify Moderator

PerryB67 wrote:

Love the advertising:

"Local US Warehouse" that builds my confidence.

"No poisonous lead/harmful sulfuric acid" Let's see, lead acid batteries are extremely easy to recycle, whereas lithium iron phosphate is the opposite.

There is no free lunch.

Enjoy,

Perry

Pls stop the fake news.

Lithium can be recycled just as well maybe even easier.
No acid in them!

Also Lithium batts will OUTLAST lead acid many times over.

And have many advantages namely less weight and can be discharged completely without degradation.

jaycocreek

Idaho

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Posted: 10/07/21 08:35am Link  |  Quote  |  Print  |  Notify Moderator

If you look on the back of a Chin's battery,it says made by Enjoybot which is advertised as having cold temp cut off and for $349..Very good price and battery for $349 with ot without cold temp cut off..

I bought one and am very happy with it so far..

S Davis

Western WA

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Posted: 10/08/21 01:12pm Link  |  Quote  |  Print  |  Notify Moderator

Just got 12 EVE 280ah cells, had them in six working days from order. Building three 280ah packs.

EVE 280ah cells

MEXICOWANDERER

las peñas, michoacan, mexico

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Posted: 10/08/21 02:18pm Link  |  Quote  |  Print  |  Notify Moderator

What is the USUABLE amp hours of a "100 amp hour" lithium battery?
Or is it hypothetical like solar panel wattage as measured on the planet Mercury?

time2roll

Southern California

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Posted: 10/08/21 02:31pm Link  |  Quote  |  Print  |  Notify Moderator

MEXICOWANDERER wrote:

What is the USUABLE amp hours of a "100 amp hour" lithium battery?
Or is it hypothetical like solar panel wattage as measured on the planet Mercury?
Sweet spot is up to 80% for 4000 to 6000 cycles.
100% maybe 3000 cycles or almost 10 years for daily cycling.
This rating drops you to 80% capacity. Possibly still very usable.

For many of us it could prove to be the last battery we buy.


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Housted

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Posted: 10/08/21 03:41pm Link  |  Quote  |  Print  |  Notify Moderator

MEXICOWANDERER wrote:

What is the USUABLE amp hours of a "100 amp hour" lithium battery?
Or is it hypothetical like solar panel wattage as measured on the planet Mercury?

Mex..
Solar panel wattage is measured at the equator on July 1 at noon on a clear day. [emoticon]

Housted


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  • MEXICOWANDERER

    las peñas, michoacan, mexico

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    Posted: 10/08/21 04:17pm Link  |  Quote  |  Print  |  Notify Moderator

    They supposedly commit Seppuku if drained lower than a certain percentage of capacity. 20%?

    Is a 100 amp hour *rated* lithium battery really an 80 amp hours usable battery?



    Solar panel wattage is measured at the equator on July 1 at noon on a clear day.

    Atop a 15,000 ft Andes mountain peak?

    time2roll

    Southern California

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    Posted: 10/08/21 04:33pm Link  |  Quote  |  Print  |  Notify Moderator

    MEXICOWANDERER wrote:

    They supposedly commit Seppuku if drained lower than a certain percentage of capacity. 20%?

    Is a 100 amp hour *rated* lithium battery really an 80 amp hours usable battery?
    Fully 100% usable. BMS will protect you from Seppuku. Need to refer to the manufacturer on expected life.
    Some might already be derated to 80%.

    Although I would find it oddly difficult to use precisely 80% or 100% on any random day.

    jaycocreek

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    Posted: 10/08/21 05:00pm Link  |  Quote  |  Print  |  Notify Moderator

    For the $349 Enjoybot lifepo4 100ah battery from there literature...

    [image]

    Ivylog

    Blairsville, GA and WPB, FL.

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    Posted: 10/08/21 06:59pm Link  |  Quote  |  Print  |  Notify Moderator

    Thanks for the graph above^^^ explains a lot. So, do you under size the AH and draw them down more than 80% so when you replace the price will be even lower?
    time2roll wrote:

    Ivylog wrote:

    Searched AliExpress and found 8-280AH cells for $358…560AH of batteries for probably $500…90 cents/AH. Today I searched again and found 8-310AH cells for $346. Add $84 for 2 BMS (200A is big enough) and $50 in cables… 620AH for $580…91 cents making them as cheap as lead/acid but probably 5X the life.

    Probably fraud at that price. You will never receive them.

    Even the 310 is a deception. The real spec on EVE and CATL is 302 or 304 but often test initially at 310 but it is not the rating.

    AliExpress is a swap meet inside a dumpster fire. Easy to get burned on buying junk.

    If you are not paying close to $100 per cell for these 280-310 they probably have issues.

    Got confirmation that they’ve been shipped. Time will tell.


    This post is my opinion (free advice). It is not intended to influence anyone's judgment nor do I advocate anyone do what I propose.
    Sold 04 Dynasty to our son after 14 great years.
    Upgraded with a 08 HR Navigator 45’...


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