100Ah 12V LiFePO4 b...
 
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100Ah 12V LiFePO4 battery for under $200


AB0L
 AB0L
(@3d0g)
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Cells from LiitoKala - $160
4S BMS from DALY (size appropriately for your current draw needs) - $20
Wood, plexi, hardware, binding posts, crimp terminals, etc. - Free to $10

Note it takes a good 45-60 days for the cells to make the slow boat journey. They can also be found on Amazon but closer to $250.

Box is designed to keep the cells under light pressure (~ 12PSI) as this improves longevity.

Note the budget BMSs like this do not have low-temp cutoff. LiFePO4 cells must NEVER be charged below 32F so make sure your environmental are up to snuff or your charger has temp monitoring. I'm using an Epic PWRgate charger and the add-on temp probe. Works great!

Lots of great tips and how-tos here: https://diysolarforum.com/

IMG 20210223 104707

 

IMG 20210223 112615

 

IMG 20210223 121649

AB0L (Formerly N0KAI)
-----
Kenwood TM-V71A, Kenwood TS-590S, Icom ID-4100A, Yaseu FT-891, TYT MD-UV380, TYT MD-380, Kenwood TH-D7A, BTECH UV-5X3, µBITX V5, µBITX V4, QRPGuys 40/30/20m DSB Digital Transceiver


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Brian
(@fbrian)
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Joined: 2 years ago
Posts: 47
 

Thanks Jeff,  this is the kind of battery buildI am looking for.

Brian
K0FBS


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AB0L
 AB0L
(@3d0g)
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Posts: 162
Topic starter  

I should've mentioned, finished dimensions: 6" x 5" x 10" and under 20 lbs.

AB0L (Formerly N0KAI)
-----
Kenwood TM-V71A, Kenwood TS-590S, Icom ID-4100A, Yaseu FT-891, TYT MD-UV380, TYT MD-380, Kenwood TH-D7A, BTECH UV-5X3, µBITX V5, µBITX V4, QRPGuys 40/30/20m DSB Digital Transceiver


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AB0L
 AB0L
(@3d0g)
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Joined: 2 years ago
Posts: 162
Topic starter  

Did a rundown test yesterday. Got 560 minutes on a 10.8 amp draw (a couple of 60W shop lights off an inverter). That works out to 101 Ah and that was at 40F. Not bad at all. LiitoKala Power cells are legit.

AB0L (Formerly N0KAI)
-----
Kenwood TM-V71A, Kenwood TS-590S, Icom ID-4100A, Yaseu FT-891, TYT MD-UV380, TYT MD-380, Kenwood TH-D7A, BTECH UV-5X3, µBITX V5, µBITX V4, QRPGuys 40/30/20m DSB Digital Transceiver


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Brian
(@fbrian)
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Joined: 2 years ago
Posts: 47
 

Fantastic Jeff!  Thanks so much for sharing with us.  Uh what’s that?  

Hey Jeff, uh, my wife asks for you stop sharing so much. 😂😂

Brian
K0FBS


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AC5S
 AC5S
(@ac5s)
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Posts: 61
 

Very nice!!!!

 

ac5s


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Scott AK6Q
(@ak6q)
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Joined: 1 year ago
Posts: 27
 

What no Anderson Power Poles on the top???

 

Really nice build there Jeff!   

Elecraft KX2 KX3 K3, Icom IC-705 Yaesu FTD3, VX8


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AB0L
 AB0L
(@3d0g)
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Joined: 2 years ago
Posts: 162
Topic starter  

@ak6q You mean like this? 😎 

IMG 20210302 084944

 Actually, I did all the electrical using power poles...

IMG 20210205 150641
IMG 20210205 150854

 

AB0L (Formerly N0KAI)
-----
Kenwood TM-V71A, Kenwood TS-590S, Icom ID-4100A, Yaseu FT-891, TYT MD-UV380, TYT MD-380, Kenwood TH-D7A, BTECH UV-5X3, µBITX V5, µBITX V4, QRPGuys 40/30/20m DSB Digital Transceiver


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Scott AK6Q
(@ak6q)
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Joined: 1 year ago
Posts: 27
 

Now were talking... looks spectacular Jeff!

 

Elecraft KX2 KX3 K3, Icom IC-705 Yaesu FTD3, VX8


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