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suaoki solar generator
#21
> Too bad as 400 watts could likely power a CF18 sized 12v fridge​, especially with regular solar recharging...

Even the most efficient fridges can easily use 20-40AH per 24 hours depending on conditions.

Again, the inverter wattage is a side issue, the **storage** capacity is the primary raison d'être for these products

Even with LFP, a bank suitable for that use case will barely be as "portable" as the fridge it's powering.

It'll take a healthy fellow with a very strong backpack to go recharging it at Starbucks.
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#22
(10-27-2017, 12:23 PM)This world isn\t home Wrote: Hope that she tells us how it works for her and the minimal dc needs. It sounds like it pretty much exactly what she needed/wanted.

TWIH

I will definitely let you guys know how it works for me Tongue .  Any suggestions on how to accurately test it for your informational needs will be appreciated.  I just hope when Jan comes around I have the umph to join you in Quartzite.
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#23
> I could go as low as a 20 watt panel or as high as a 100 watt.  Trying to be cost efficient and dollar wise

The "suitcase" style 100w total with two 50w halves IMO would be well-matched to your powerpak, and allow you to recharge away from the van so you don't have to park in the sun.

There are more expensive ones made from semi-flex that likely won't last as many years, but weigh very little and would slide into a very narrow space inside a van.

The ones made from hinged rigid framed panels are much heavier and bulkier, but cheaper and likely more robust.

I hope we can work together to get more derails on your unit's performance; you certainly got a good price if it actually proves to be LFP at 20AH capacity.
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RossCoe (10-27-2017)
#24
(10-27-2017, 11:26 AM)frater secessus Wrote: How tall is the roofline compared to you?  When you are standing outside does the roof come to your shoulders?  head?  If it's low enough this might be a great opportunity to build in a tilt mount;  the Pilot would face E/W (depending) so that the panel tilted toward the south when propped up.

Or maybe flat-mount flush (or nearly so) with the rack rails so they don't throw shadows on the panel.

It's really not a bad situation for using the bendy panels, particularly if you can unbolt the rails to minimize shadows.

I am 5ft 6in, and the roof at the driver door is even with the top of my head, and as you go further back it slopes higher, and the rack is about 6 ft, way above my head at the back door, and the back hatch.
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#25
People I know have purchased from this outfit and are happy so far, arrived from China within a week.

https://m.ebay.com/itm/100W-Solar-Panel-...2852613473

Market rate "buy it now" seems about $180 but with some good eBay-foo and sniping tools you may be able to get a good discount by bidding.

Here's an example of the rigid style: https://www.renogy.com/renogy-100-watt-1...ontroller/

But you can probably find cheaper.

If you are mounting on your roof, do try to get these three detailed specs on the built-in solar controller, which may be difficult from the vendor.

MPPT or PWM? Voc maximum? Amps (Imp) maximum?


Just a bit off the wall, but this style https://m.ebay.com/itm/Portable-Folding-...2183910013

would require some adapting, but be the ultimate in portability and flexibility in use
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#26
(10-27-2017, 01:05 PM)John61CT Wrote: you certainly got a good price if it actually proves to be LFP at 20AH capacity.

Educate me here John!!  What is LFP?   Wink
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#27
AKA LiFePO4 or lithium iron phosphate

A specific type of Lithium Ion (LI) battery.

The only one in common use as energy storage in big RV and boat systems, since it doesn't have the thermal runaway issues of the others.

Yours is either that or NMC.
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This world isn't home (10-27-2017), RossCoe (10-27-2017)
#28
(10-27-2017, 01:42 PM)John61CT Wrote: AKA LiFePO4 or lithium iron phosphate

A specific type of Lithium Ion (LI) battery.

The only one in common use as energy storage in big RV and boat systems, since it doesn't have the thermal runaway issues of the others.

Yours is either that or NMC.
How will I know what I got?  Can you trust what they say in the specs in the manual?  A sticker? 

So there are many types of lithium ion batteries.  Who knew??  YOU did!  Thank you- and looked up Nickel manganese cobalt  Wink
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#29
In an ideal world, you pick up the phone, get put through to a knowledgeable tech within 10 minutes, or contact them via email, and get your questions answered.

But actually this level of basic info should be available, all in one readily available data sheet.

All the quality deep cycling battery vendors work this way, because the professionals working in the off-grid power, yachting and Euro caravanning markets, would never buy from a vendor that didn't.

The only reason vendors can get away with such deceptive obfuscation is that it's a "hot" fashionable market niche, where most consumers aren't even aware of the right questions to ask.
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The following 2 users say Thank You to John61CT for this post:
This world isn't home (10-27-2017), RossCoe (10-27-2017)
#30
Keep googling anytime you come across something you don't immediately understand, you'll be amazed how much you can learn in a very short time.
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