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Why all the hating up on Simon? He's been seen to have a very big heart for those who were dealt a bad deck. Everything I hear about him makes him a stellar guy. Wishing him a fast and full recovery.

Awesome. So that makes one really wonder.....why the need for all the regulations, laws and restrictions ?????

The point I was making was that there are a lot of regulations now whereas there were not at the beginning. And many of them came about because individuals did not use self control. That said, lawmakers always look for ways to make their mark and many don't see your need to do as you like to do...

This is exactly what happened with drones. When only a few had them, some were flying them to 10,000 feet and posting it on YouTube. Some were even chasing airplanes and flying them at the approach path at busy airports. Today you are virtually limited to flying the within 20 feet of you and...

Cool. Sounds like you are very knowledgeable with this stuff. A 32700 pack build would be interesting. Please consider a thread about that build.

If you have a BtrPower battery and have been using it successfully for at least 2 years could you please chime in? Or if you used one and it failed.

about to finish up the capacity test on the replacement 20Ah BtrPower battery they sent. It's at 21Ah (American tested Ah) now and still going. 👍

LiFePO4 is heavy for sure. But they are good for 1000's of cycles whereas liIo not even close so theres Ups and Downs If this replacement battery proves good, then I can wholeheartedly recommend BtrPower (iMotorBattery). What we don't know is the exact quality of materials inside the...

Not necessary because BtrPower and iMotorBattery did send a replacement. I'm prepping it for a capacity test now and will post the results. ebay is sued all the time. Just because the fine print says that "by using this service you agree to blah blah blah....." Doesn't remove your right to sue...

As you may know, capacity is related to load. Generally lower loads will yield "higher capacities" due to lower losses from heating of the cells internally. LiFePO4 are very good at high loads however. So I am testing them with a DL24P capacity tester which unfortunately can't give a...

I feel your pain. At least now I know it's not just my deliveries. Sorry you had to go through that. It's awful.

The replacement battery has different dimensions than the original. The replacement is both wider and shorter. Dimensions to follow.

Yeah...if I never got the replacement. But I finally did so things are definitely looking up finally. The last week we have had hell with deliveries. Both UPS AND FedEx have been mis delivering packages like crazy. The series of events is both incredibly ironic and odd, leading to a lot if...

I labeled the cells 1 - 16 with a permanent marker

So the tracking number I got was for another package...... BUT...I got a call today from a neighbor on another street (I know this neighbor) and he said he had packages for me. One was the warranty replacement battery. I had thought I got scammed because the tracking number I had was for a...

FedEx delivered the replacement to the wrong address

Cell #7 seemed ok at first but on further checking it seems it resists charging. Meaning it has high internal resistance and / or low capacity. 16 cells. I'm still testing them. Internal resistance as well. The thing that stands out is the discharge profiles. I really need a better load...

Truth be told, I've looked around and haven't really found a better ebike BMS. usually they have to be small and compact. It seems they all use these same chips. Even the really expensive ones. I don't think BtrPower is trying to sell a low quality battery (actually, the longevity of the...

More Diagnosis of problem. The battery is a 48v 20Ah unit. It began to end the charge cycle early going from 55v to 58v in less than 1 minute. A capacity test showed only 8.13Ah from the battery. After taking the battery apart..... Cell #7 was at 2.7v while the other cells were at a higher...

Diagnosis of the problem. After dissecting the battery, it appears most of the cells were at the expected voltage and capacity but..... Two were not. However, the two that were not seem to be taking a full charge with the BMS removed so it's possible the BMS is bad or one of the wires going...