diy solar

diy solar

Will's new 12v lifepo4 battery test video.

Somewhat disagree on storing LFP. They should be stored at 3.2V (30-40%).
Assuming you're checking your batteries at few months (3 months), there is no way on the earth LFP at 30% SOC can self discharge its way to 0% in that short span of time. It doesn't makes sense to store them fully charged. A partial charge should suffice for storage if actively monitored.
 
I watched it and I will just say I am concerned that people might watch the video and think they can use LFP in harsh conditions and not follow the manufacturers guidelines and when you depend on that battery working to run your house, medical gear, fridges and communications systems if that battery fails so might you.

Yes, that battery has survived but I wouldn't count on batteries that are being mistreated when your life depends on it.

JMO.
 
shvm said:
Somewhat disagree on storing LFP. They should be stored at 3.2V (30-40%).
Assuming you're checking your batteries at few months (3 months), there is no way on the earth LFP at 30% SOC can self discharge its way to 0% in that short span of time. It doesn't makes sense to store them fully charged. A partial charge should suffice for storage if actively monitored.
Click to expand...
The BMS on some units will cause faster self discharge rate. Good example of this is the aolithium BMS.

If you are disconnecting the BMS everytime you put in storage, sure. Or if you have one that goes into storage mode. But many don't.
 
shvm said:
Somewhat disagree on storing LFP. They should be stored at 3.2V (30-40%).
Assuming you're checking your batteries at few months (3 months), there is no way on the earth LFP at 30% SOC can self discharge its way to 0% in that short span of time. It doesn't makes sense to store them fully charged. A partial charge should suffice for storage if actively monitored.
Click to expand...
But yes as you said, actively monitored. Sure
 
Solarcabin Channel said:
I watched it and I will just say I am concerned that people might watch the video and think they can use LFP in harsh conditions and not follow the manufacturers guidelines and when you depend on that battery working to run your house, medical gear, fridges and communications systems if that battery fails so might you.

Yes, that battery has survived but I wouldn't count on batteries that are being mistreated when your life depends on it.

JMO.
Click to expand...
I would prefer sharing test data and letting people decide for themselves. These batteries can handle some serious abuse and people baby them more often than not. For most people these batteries will cycle daily long after we die.
 
Will Prowse said:
I would prefer sharing test data and letting people decide for themselves. These batteries can handle some serious abuse and people baby them more often than not. For most people these batteries will cycle daily long after we die.
Click to expand...
Will:

Yep, use your brain and figure stuff out for yourself.

Unfortunately, we live in a world where the scumbag lawyers who advertise on huge billboards along the freeway and on daytime TV have convinced Joe and Josephine Average that NOTHING bad that ever happens to them is their fault and that somebody else can PAY for your ignorance.
 
Last edited:
I have this exact battery. I purchased it about a year and a half ago. Not used a ton, few road trips with a pure sine wave inverter to power a laptop. I can easily pull 300w from it too. Still can't believe how much I paid for it back then...
 
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