Recent content by mickyd

Deeper look found the the voltage was -4.4V with no continuity. Negative voltage was weird. The continuity test was to see if there was electrical connection between the pos neg battery ends since trying to charge the pair directly indicated 'connection break' as of the nickel strip wasn't...

Troubleshooting a 2P5S Default battery pack. One of the 5 parallel groups has voltage at 4.4V and I wanted to discharge it down to 4.2. I don't know how the voltage got up so high on that single pair but it is what it is. The odd thing is even though it measures voltage, there is no continuity...

Appreciate the math and process of coming to the 1035 min. [17 hr.] estimate using 18P. Makes sense and help me and others see the thought process. Ohms law in action with power and time added. Rather than draining using headlights as suggested, I'll configure a 48V (13S) E-bike pack and also...

It's my buddies. Cross country only for sure. Sure is perdy though.

Thanks for the post. That looks like a good option. Found the Atorch DL24 with bluetooth on the Ali website. Approximately how long does it take to discharge at say 3A? You mentioned also using power resistors. I once used a 1ohm 20W ceramic resistors to bring a single cell voltage...

I have to bring down about 400 individual 18650 harvested cells from full charge to ~3.6V storage voltage. What's the best method to use to discharge this number of cells in a reasonable time? I started today using a 4-port Liitokala Li-500 NOR mode at 1000mA. This process is VERY time...

Doubting 'tom' huh? :lol: That's good. Calling out questionable information in forums is important. We'll see if any proof gets shared with us.

Got it. Glad you explained voltage difference seen. Final discharge readings for group 9 seen on various measuring methods. Group was initially at 4.17V at the BMS group connector with multimeter and I wanted to get it down to the entire pack group average of 4.10V. - 3.76V charger display...

Positive results from manually balancing the two lowest cell groups then test riding and recharging!!! :D Rode the trike until the instantaneous low voltage cutoff (which started this thread) and gained 2 miles of range, from 10 to 12 miles. Full charge group voltages before and after...

Brought group 7 up from 3.80V to 4.10V @1A. Working on group 5 now. Noticing something odd while multimeter monitoring the voltage at the BMS connector header pin comparing to the Hitek chargers voltage on the display. THEY DON'T AGREE. Charger voltage was showing 4.16V whereas the group...

I opted to try charging the 3.80V group 7 alone first and see if I can get it close to 4.10V. Used the header pin connector attached to the Hitek X1 AC Plus charger. Based on results, I'll do the next lower 3.98V group 5. Then a short ride to bring the pack voltage down and measure how each...

So I let this battery sit for for a couple weeks after the above charge and all groups maintained the charge. I located a Hitec X1 AC Plus 2-6S balance charger / discharger and am going to try to balance charge low groups 5 and 7 to the pack average. Thinking of using the method indicated by...

That's funny! I really thought you were asking the question. Oh well, the video will help SOMEONE out. :lol: (Love the way the guy in the video used the KISS principle for his heat source.)

Maybe, just maybe?? You'll get the concept in the first 12 seconds. EfElTOVz88M