expiredtimsy posted Nov 30, 2021 02:42 AM
Item 1 of 5
Item 1 of 5
expiredtimsy posted Nov 30, 2021 02:42 AM
100-Watt 12-Volt Flexible Monocrystalline Solar Panel
& More + Free Shipping$92
$130
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Deal Details
HQSolarPower.com has Lithium Iron Phosphate Batteries, Solar Panels & More on sale below.
Thanks community member timsy for sharing this deal
Example Deals:
Thanks community member timsy for sharing this deal
Example Deals:
- 100-Watt 12-Volt Flexible Monocrystalline Solar Panel $92.49 --> Now $91.99
- 100-Watt 12-Volt Monocrystalline Solar Panel (Compact Design) $74.99 --> Now $78.99
- 20-Amp MPPT Solar Charge Controller $52.92 -> Now $60.99 --> Now $52.92
- HQST 20-Amp MPPT Solar Charge Controller w/ Bluetooth LCD Display $70.39
Editor's Notes
Written by slickdewmaster | Staff- 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.
- 12-Volts 100Ah LiFePO4 Lithium Iron Phosphate Battery for RV, Solar Marine & Off-grid Applications $364.99
- 100-Watt 12-Volt Monocrystalline Solar Panel $74.99 -> Now $78.99 -> Now $76.99
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
HQSolarPower.com has Lithium Iron Phosphate Batteries, Solar Panels & More on sale below.
Thanks community member timsy for sharing this deal
Example Deals:
Thanks community member timsy for sharing this deal
Example Deals:
- 100-Watt 12-Volt Flexible Monocrystalline Solar Panel $92.49 --> Now $91.99
- 100-Watt 12-Volt Monocrystalline Solar Panel (Compact Design) $74.99 --> Now $78.99
- 20-Amp MPPT Solar Charge Controller $52.92 -> Now $60.99 --> Now $52.92
- HQST 20-Amp MPPT Solar Charge Controller w/ Bluetooth LCD Display $70.39
Editor's Notes
Written by slickdewmaster | Staff- 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.
- 12-Volts 100Ah LiFePO4 Lithium Iron Phosphate Battery for RV, Solar Marine & Off-grid Applications $364.99
- 100-Watt 12-Volt Monocrystalline Solar Panel $74.99 -> Now $78.99 -> Now $76.99
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Top Comments
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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Also, to figure out whether you'll save money by going off grid using a battery solution, take the kWh figure, times it by 0.80 to figure in inverter losses and system losses, multiply it by your AVERAGE cost per kWh from your utility bill, and then multiply it by the amount of estimated cycles from the battery (big assumption here). The AVERAGE cost per kWh should be calculated by taking your monthly bill and dividing it by the total kWh used as determined by the electricity meter reading on the bill. You should do it for a year of readings. So, for me, this is the ROI of the battery:
1.2 kWh * 0.8 * $0.25 / kWh * 3000 = $720. Subtract out the cost of the battery incl taxes, etc..., and the net ROI is more like $320. After you include the costs of the MPPT controller, inverter, and solar panels, the difference gets closer to zero. That explains why NEM is really needed to make solar a cost efficient proposition even in high cost electricity states like CA. Once they phase out NEM 1.0 / 2.0 and implement NEM 3.0, it's likely game over for solar. The ROI will make less and less sense.
ROI of $320 is for the life of the battery (3000 cycles). It's lowered by the costs of all the equipment that goes along with it like solar panels, etc... You depreciate those costs into the ROI since these things don't last forever. Infact, most MPPT solar charge controllers and inverters will probably just last 10 years before they need replacing, and that will just keep eating into the ROI.
How do you plan to verify 3000 charge cycle claims? You can charge and fully discharge batttery everyday, that will be nearly impracticle, but it will take 10 years.
if you're willing to sacrifice 10 years of life for battery technology that you probably don't care, you have earned my admiration. If you have some experience in electronics, educated and understand in the field, then possibly, you can can build yourself a test-fixture consists of huge loadbank and charger with some kind of automomated sequence using some micro-controller based programming, but realistically, it still take 10 years or more to verify true charge cycle capacity.
It's like you wish to find all comination of 6 numbers in correct sequence to say, I know I have the winning number to hit the jackpot, thereby earning several hundred millions of dollars in lottery prize. It's possible, but it is insane.
Many of these claimed charge cycle is a theoritical calculated value based on accerlated life test. That is what we do. This is what manufacturers think, none of it actually based on actual test data.
I doubt if 1% of manufacturer of these battery will survive more than few years, when you wish to file a warranty claim. They spread hypes, cash out, close factory. In fact, I have feeling this is what they do now for Soilid State Battery technology.
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Our community has rated this post as helpful. If you agree, why not thank Yirmeyahu
When one contemplates longevity with LFP, the main issue that affects the battery life is HEAT. internal Heat is generated by: pulling too much out too fast, having a high ambient temperature, and mismatched cells. The 2nd issue is cycle depth (full discharge to full charge, 100% cycle depth, reduces the life span of LFP cells).
Those of you planning to use this out in the sun can expect massively degraded battery life.
For those planning to use it indoors in a nice air conditioned environment and keeping it charged in the range of 20% to 80% (not going bellow 25% charge or above 75% charge), well that one will last forever; Projections are in the decades. If you at least keep 10% at the bottom and 10% at the top that you don't touch; this will already do wonders for longevity.
Here's a nice summary from Battery University [batteryuniversity.com]which demonstrates how temperature and shallow cycle depth can massively extend the life of Lithium batteries (the family of which LFP belongs).
Yeah, building your own is much cheaper but there are dangers; it's not for everyone and sometimes you get cells that flake out. You have to worry about expansion (bloating) issues if using some of the cheaper prismatic chinese cells. The price of this item is not bad for an LFP battery that's already in the states, with warranty and a nice case.
I will NEVER go back to AGM for solar stuff.
Our community has rated this post as helpful. If you agree, why not thank Symber
Also, to figure out whether you'll save money by going off grid using a battery solution, take the kWh figure, times it by 0.80 to figure in inverter losses and system losses, multiply it by your AVERAGE cost per kWh from your utility bill, and then multiply it by the amount of estimated cycles from the battery (big assumption here). The AVERAGE cost per kWh should be calculated by taking your monthly bill and dividing it by the total kWh used as determined by the electricity meter reading on the bill. You should do it for a year of readings. So, for me, this is the ROI of the battery:
1.2 kWh * 0.8 * $0.25 / kWh * 3000 = $720. Subtract out the cost of the battery incl taxes, etc..., and the net ROI is more like $320. After you include the costs of the MPPT controller, inverter, and solar panels, the difference gets closer to zero. That explains why NEM is really needed to make solar a cost efficient proposition even in high cost electricity states like CA. Once they phase out NEM 1.0 / 2.0 and implement NEM 3.0, it's likely game over for solar. The ROI will make less and less sense.
The reason these numbers stuck with me is that years ago I saw similar videos suggesting these were the charge / recharge numbers you should use for your phone to get the maximum battery life.
Regardless, if I still had my motorhome, I'd be upgrading the house lead acid batteries with LiFePO batteries in a heartbeat. But I would not put one in my RV or car as a starting battery, as the technology currently exists.
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