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100-Watt 12-Volt Flexible Monocrystalline Solar Panel Expired

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$129.99
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HQSolarPower.com has Lithium Iron Phosphate Batteries, Solar Panels & More on sale below.

Thanks community member timsy for sharing this deal

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  • HQST Return Policy:
    • If you decide to return your purchase, HQST Solar will allow for a refund for new, undamaged, and unmodified products within 30 days of receiving the order. Returns submitted for a refund may be subject to a 10% restocking fee and shipping costs.
    • HQST Solar will waive the 10% restocking fee and pay for shipping in the following situations: carrier damage, a defective product, a product does not match advertising, receiving an incorrect product, or a product was an extra item that was not ordered. For any other reasons, customers are responsible for shipping fees.
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Original Post

Written by
Edited January 14, 2022 at 08:35 AM by
https://hqsolarpower.com/on-sale/

The LiFePo4 battery is a solid deal but note that you cannot put them in serial for higher voltage. The flexible 100W panel is also solid and a good choice for boats/RVs at only 4lbs. There is a $53 20A MPPT charge controller and a fancier bluetooth one for $72.
Hot price on a solar attic fan for $99.

https://hqsolarpower.com/12-volts...lications/ OOS
https://hqsolarpower.com/100-watt...lar-panel/
https://hqsolarpower.com/100-watt...panel-new/ OOS
https://hqsolarpower.com/100-watt...ct-design/
https://hqsolarpower.com/20a-mppt...ontroller/
https://hqsolarpower.com/hqst-20a...d-display/

There are others but these seem the best deals. This was an earlier deal ending 11/20 for the rigid panels and has some discussion: https://slickdeals.net/f/15420964-hqst-100-watt-12-volt-monocrystalline-solar-panel-76-99-with-fs?v=1&src=SiteSearch
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$92
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The lithium technology is now becoming easily accessible to general population. 3000 charge cycle expectancy is difficult believe, offering 10 times longer lasting usability than lead acid or AGM types, or up to 5-6 times more than first generation lithium ion batteries.

This equates to minimum 10+ years life expectancy, yet priced at par with high quality commercial lead-acid batteries.

This is fabulous and unrealistic deal, but I don't believe seller's claim. If they truly believe their hardware to last minimum charge cycle of 3000, they'd be accompanied with stated warranty accordingly, that is minimum 10 years free of replacement guarantee, that is to say, free battery replacement rights to purchasers if storage capacity degraded to industry standard of 60-70% of original specification.

This really may be a quantum leap jump in battery technology everyone wants, or just a hype to find a sucker. I'd tend to believe it be be later case, as I can't find warranty replacement policy that support its claims.

There still is many merchants selling over-stated lithium batteries in eBay. I do not believe they wanted quick income by cheating someone, but they really do NOT understand the underlying battery technology. I hope merchants in this understand the items they sell to public.
·
You must not be familiar with LiFePO4 chemistry.
·
LiFePO4 chemistry batteries have high cycle counts in the thousands. 3000 is a reasonable expectation for these batteries. Whether the manufacturer puts in quality cells is something buyer has to research.
·

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Joined May 2009
L10: Grand Master
> bubble2 6,063 Posts
jkloisdafoiwdaf
11-29-2021 at 10:36 PM.
11-29-2021 at 10:36 PM.
Is 100 Watt 12 Volt Flexible Monocrystalline Solar Panel any good? Seems like a decent price
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Joined Jul 2003
Don't need it? Buy it!
> bubble2 4,147 Posts
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Optophobia
11-30-2021 at 01:31 AM.
11-30-2021 at 01:31 AM.
The other deal the OP linked to is still going on.
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> bubble2 471 Posts
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eiei
11-30-2021 at 01:43 AM.

Our community has rated this post as helpful. If you agree, why not thank eiei

11-30-2021 at 01:43 AM.
The lithium technology is now becoming easily accessible to general population. 3000 charge cycle expectancy is difficult believe, offering 10 times longer lasting usability than lead acid or AGM types, or up to 5-6 times more than first generation lithium ion batteries.

This equates to minimum 10+ years life expectancy, yet priced at par with high quality commercial lead-acid batteries.

This is fabulous and unrealistic deal, but I don't believe seller's claim. If they truly believe their hardware to last minimum charge cycle of 3000, they'd be accompanied with stated warranty accordingly, that is minimum 10 years free of replacement guarantee, that is to say, free battery replacement rights to purchasers if storage capacity degraded to industry standard of 60-70% of original specification.

This really may be a quantum leap jump in battery technology everyone wants, or just a hype to find a sucker. I'd tend to believe it be be later case, as I can't find warranty replacement policy that support its claims.

There still is many merchants selling over-stated lithium batteries in eBay. I do not believe they wanted quick income by cheating someone, but they really do NOT understand the underlying battery technology. I hope merchants in this understand the items they sell to public.
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Last edited by eiei November 30, 2021 at 01:59 AM.
Joined Apr 2004
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> bubble2 847 Posts
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semjase
11-30-2021 at 04:15 AM.
11-30-2021 at 04:15 AM.
I put a Chinese lifepo4 kepworth battery in my track car and it has been amazing. What is the max intermittent amperage of this 100ah battery? Not in the specs. Dictates whether or not it can replace your RV primary batteries.
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> bubble2 5,586 Posts
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armedmetallica
11-30-2021 at 05:00 AM.
11-30-2021 at 05:00 AM.
Quote from semjase :
I put a Chinese lifepo4 kepworth battery in my track car and it has been amazing. What is the max intermittent amperage of this 100ah battery? Not in the specs. Dictates whether or not it can replace your RV primary batteries.
does it replace the standard 12V battery? any disadvantages of doing that?
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Joined Aug 2003
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> bubble2 9,394 Posts
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ikonoklast
11-30-2021 at 05:01 AM.
11-30-2021 at 05:01 AM.
Battery review.

https://youtu.be/IkoYW7kCR4I
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Last edited by ikonoklast November 30, 2021 at 05:07 AM.
Joined Aug 2003
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> bubble2 9,394 Posts
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ikonoklast
11-30-2021 at 05:04 AM.
11-30-2021 at 05:04 AM.
Quote from armedmetallica :
does it replace the standard 12V battery? any disadvantages of doing that?

LiFepo4 battery in general should not be used in freezing conditions. The battery management system should have low temp cutoff to prevent damage. This is not a replacement for lead-acid battery for engine cranking. This is good for providing power for other applications like powering your RV/house where it's in above freezing temps.
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> bubble2 612 Posts
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funkmasterscizz
11-30-2021 at 05:07 AM.
11-30-2021 at 05:07 AM.
I'd love to put a solar panel on the roof of my golf cart…
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> bubble2 9,394 Posts
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ikonoklast
11-30-2021 at 05:10 AM.

Our community has rated this post as helpful. If you agree, why not thank ikonoklast

11-30-2021 at 05:10 AM.
Quote from eiei :
The lithium technology is now becoming easily accessible to general population. 3000 charge cycle expectancy is difficult believe, offering 10 times longer lasting usability than lead acid or AGM types, or up to 5-6 times more than first generation lithium ion batteries.

This equates to minimum 10+ years life expectancy, yet priced at par with high quality commercial lead-acid batteries.

This is fabulous and unrealistic deal, but I don't believe seller's claim. If they truly believe their hardware to last minimum charge cycle of 3000, they'd be accompanied with stated warranty accordingly, that is minimum 10 years free of replacement guarantee, that is to say, free battery replacement rights to purchasers if storage capacity degraded to industry standard of 60-70% of original specification.

This really may be a quantum leap jump in battery technology everyone wants, or just a hype to find a sucker. I'd tend to believe it be be later case, as I can't find warranty replacement policy that support its claims.

There still is many merchants selling over-stated lithium batteries in eBay. I do not believe they wanted quick income by cheating someone, but they really do NOT understand the underlying battery technology. I hope merchants in this understand the items they sell to public.

LiFePO4 chemistry batteries have high cycle counts in the thousands. 3000 is a reasonable expectation for these batteries. Whether the manufacturer puts in quality cells is something buyer has to research.
18
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> bubble2 471 Posts
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eiei
11-30-2021 at 05:50 AM.
11-30-2021 at 05:50 AM.
Quote from ikonoklast :
LiFePO4 chemistry batteries have high cycle counts in the thousands. 3000 is a reasonable expectation for these batteries. Whether the manufacturer puts in quality cells is something buyer has to research.
It's is actually half the price one Costco merchandise at this moment, which I though is extremely attractive, still pondering if I should replace my golf cart batteries. My deep-cycle battery rarely last more than a year, and as with all lead acid type, self discharge rate is becoming intolerable, that is, it loses 25-40% SOC overnight. Basically, waste too much time just to charge battery.
My golf cart batteries, yielding approximate twice the capacity of this one costs about $300, at par with Costco package, will jump onto this lithium, if there is any assurance that these batteries perform as stated. Even at $1400 Costco charge for pair, I'd more than happy to buy it, it's well worth the investment.
From what I read on media, these things can be charged with much higher current and negligible self-discharge loss, substantially reducing overall recharging time, which is real benefit of having lithium battery.

Only issue is, as you stated, the quality of cells inside that can yield theoritical yield of stated charge cycle. You may end up with one of those 18650 recycled cell repackaged that stated energy capacity is unreal.
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Last edited by eiei November 30, 2021 at 06:02 AM.
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> bubble2 100 Posts
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RCFlyer
11-30-2021 at 07:55 AM.
11-30-2021 at 07:55 AM.
Quote from eiei :
It's is actually half the price one Costco merchandise at this moment, which I though is extremely attractive, still pondering if I should replace my golf cart batteries...
Check out https://diysolarforum.com [diysolarforum.com] It's the forum for a well known solar/battery youtuber named Will Prowse.
In there you can learn about how these lifepo4 batteries are built, where to get cells, and where to buy BMS's, and how to set it up. For about $600 I built a ~12V 4S battery with ~250Ah including a quality BMS. It's really not that difficult. That was over 6 months ago and prices have gone up since then, but it's still a real bargain compared to old battery types.
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> bubble2 12 Posts
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denebx
11-30-2021 at 07:58 AM.
11-30-2021 at 07:58 AM.
Quote from ikonoklast :
Battery review.

https://youtu.be/IkoYW7kCR4I
Thanks for that - the low temp cut-off not working is a bummer. Granted not many of them actually do at this price but I'd rather save my money and get one that does. LiFepo4 dies a quick death when misused in the cold.
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ikonoklast
11-30-2021 at 08:30 AM.
11-30-2021 at 08:30 AM.
Quote from Optophobia :
The other deal the OP linked to is still going on.
Quote from denebx :
Thanks for that - the low temp cut-off not working is a bummer. Granted not many of them actually do at this price but I'd rather save my money and get one that does. LiFepo4 dies a quick death when misused in the cold.
Reviewer said that the battery may be well insulated so the inside temp may be higher than the 20 degrees outside temp. The other issue seems to be that the BMS has a low voltage cut off that's lower than he prefers. Draining cells too low will damage the cells.

All these issues are preventable if one pays attention but it's nice to have a peace of mind that the BMS can handle these things. I think these batteries are a great solution but the downside is you are stuck with whatever BMS that the manufacturers put in.

I am tempted to buy, the price is very good but I am particular lol.
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