Well at least they are advertising them properly....Only a semi mystery battery
But it has some warranty
But it has some warranty
Factory second hand batteries
- Thread starter wme
- Start date
efficientPV
Solar Addict
- Joined
- Sep 24, 2019
- Messages
- 1,477
Returns are an immense problem for sellers. Places like amazon allow returns for no reason. I do buy returned items with warrantee like at amazon and they are like new, just an open box. Also buy from liquidators and most times they are just a new open box and never used. I've bought #20K cars with no warrantee at dealer auctions, It all depends on your tolerance for risk,
Returns can definitely be a headache for sellers, but sometimes, they can work out in our favor as buyers. I've had good experiences buying second-hand factory items, especially from places like Amazon, with warranties.
I recently visited a flea market in Sacramento and saw some great deals on refurbished items. It's all about weighing the risk versus the potential reward, but I've found that with a bit of caution, buying a factory second-hand can be a smart way to save money without sacrificing quality.
I recently visited a flea market in Sacramento and saw some great deals on refurbished items. It's all about weighing the risk versus the potential reward, but I've found that with a bit of caution, buying a factory second-hand can be a smart way to save money without sacrificing quality.
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Ampster
Renewable Energy Hobbyist
I see two different categories:
Second hand or used batteries.
Factory Second or not Automotive Grade
Second hand or used batteries.
Factory Second or not Automotive Grade
OffGridInTheCity
Solar Wizard
My powerwall is made (over last 6 years) of 100% 'second hand' batteries. The key is to order from a *reputable* source by which I mean the capacity / viability of the cells is properly represented. And of course, don't overpay 
My key recommendation is one should plan to test 2nd hand or used or surplus cells for capacity, self-discharge, IR (and possibly heaters). This will let you assemble a well matched, verified group of cells and pretty much ensure a good battery. If you don't want to test or have time or equipment - then plan for ability to swap out sagging ones that do not stay in balance (or whatever).
My key recommendation is one should plan to test 2nd hand or used or surplus cells for capacity, self-discharge, IR (and possibly heaters). This will let you assemble a well matched, verified group of cells and pretty much ensure a good battery. If you don't want to test or have time or equipment - then plan for ability to swap out sagging ones that do not stay in balance (or whatever).
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Daddy Tanuki
Solar Wizard
well that was quick...
littleharbor2
Solar Addict
Old thread. Started 9 months ago.
Daddy Tanuki
Solar Wizard
ah.. was not paying attention. just saw the thread pop up and clicked on the link out of curiosity. thats what I get for following @OffGridInTheCity
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