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Old 07-16-2018, 12:57 PM   #21
BobBoyce
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Default Re: Cooling method for batteries (LiFePO4), or am I nuts?

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Originally Posted by Goliath View Post
Great info about the Ebay parts. It's hard to wade through the quality differences.

Is the link you provide to MPJA for those better quality units?

*Just read the description on that linked page, and it is the ones you were talking about. I'll pick up some of those.*
Yes, those are the ones I normally buy. I stopped to use WiFi at a McDonalds before I get on I-95 to ginve jmauld a chance to call me.
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Old 07-30-2018, 11:05 PM   #22
bronsonj
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Default Re: Cooling method for batteries (LiFePO4), or am I nuts?

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Originally Posted by NCPW View Post
If I'm understanding the bolded part of you post correctly, just know that a lot of the common BMS manufacturers used with golf cart conversions or off-grid storage systems shunt the voltage needed to balance cells at the TOP or MAX cutoff voltage programed by the user. I.E. if you set your max to 4.2V per cell but you only charge to 80% of that, you could run the risk of your cells getting out of balance.
You are correct NCPW. I was planning on charging my pack to 80% of max. I had a BMS but I am not happy with it. So for now I charge the pack to 57.4 and manually monitor the cells for balance. They all reach 4.1v without issue. I plan on getting two 7S balancing units if I can find one I like. But everywhere I look they are all made in China junk...

If anybody has a bead on a 7s or 14s balancer that's not crap please post. The last one I saw said it would balance the cells with 180mA of current draw... It'd take hours if the cells were out but that's the best option I've seen so far.
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Old 10-12-2020, 07:35 PM   #23
tkj1
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Default Re: Cooling method for batteries (LiFePO4), or am I nuts?

Hello,I know this thread is old but just wondering if you ever figured out your heat storage,and did you ever find a bms you liked? thanks
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