Recent content by lakespyder

Hi Jeff, The build went well and has been use all summer. I used cutting boards, and grooved them with my table saw, then used a combination of JB Plastic Weld & a plastic stapler to hold it together. I also used plastic sheets to create an internal box, so the cutting board box is just added...

Thanks for the info! I decided not to put the spacers between each cell and used poly masking tape to hold each pack of 8 together. I do plan to put the spacers between the two packs before using fiber tape to hold them together as one. In that way I can slip the NTC wire in between the 2 packs...

After a major fail due to purchasing a GTK pack on Ali Express for my golf cart (You can see my struggles with that pack in another post of mine), I have now purchased EVE 105 cells and a BMS to build my first 16S 48v battery for my golf cart. I just finished top balancing the new cells and am...

No worries, I appreciate all the help. This GTK battery from Foxelion on aliexpress was ultimately just a bad decision and they are still not responding to me at all ( no warranty, no support, just insults). I just ordered from a different supplier with US stock 16 grade A EVE 105ah cells and a...

Well, it is already starting to have a lower full charge voltage ( down to 53.3 and last charge was 53.1), and I have only charged it a few times since balancing. I have not pulled it out and tested yet, but I can only assume that it is already out of balance. If I get an active balancer, will I...

Great information, and this certainly would explain what is happening with mine. I just tested with my good meter and it is settled to 53.56 with no connection to the cart, and finished charging over 14 hours ago. That is an average of 3.3475 per cell, which is pretty closely in line with my...

Well, after the charger stayed active for over 7 hours on the cart, I finally disconnected the DC power from the cart (it is drawing approx 0.060 current for no reason, but I think that I need to change the solenoid as from my testing it is consuming about 0.04-0.05 of it, the gauge 0.010 and...

Yes that's what I was thinking too. As much as I hate pulling this thing all apart AGAIN and putting it back together, I am getting pretty good at it by now. Of course if the initial resting balance after it stops is really close to 58.4, which would indicate to me that there is a pretty good...

Well, I think your Honest Opinion instincts are pretty on the money. I put it back on the charger over 3 hours ago thinking that it would charge for a few minutes and be done. Currently it is still charging.

I will keep the active balancer in mind if the battery starts to have a similar fail again. I see many of them are 5A, is that what I would need? They say they go up to 300AH battery for 16s. This is my first experience with a Lifepo4 battery, and at least I can say that all of the trouble this...

The new charger is rated at 58.4V and 15A for 110vac or 30A if using 220vac according to the seller. I just put my meter to it and it is showing 58.9V with no load. The charger input wires to the BMS are only 14awg, so the seller of the charger recommended no more than 20A to be safe. I am...

Yes, the numbering I put on the sheet is the same as the order from that post. Cell# 12 & 14 were the rogue ones from that post, and both seem to be very much in line with the rest of the cells now. Those are also the only 2 that I did not put the power supply on at all when I top balanced the...

After completion of my balancing by fully charging 14 of the 16 cells, I was able to take the golf cart for about 13 miles before the BMS tripped on me. It tripped after about 1-2 seconds of hard acceleration from a full stop. Fortunately I had the Portable AC supply to reset it. After...

Thanks for the tip. It still took forever, with an average charging time ranging from 1-4 hours per cell pack. After reading your suggestions I kinda did a sloppy hybrid to allow greater current to try to reduce charging time a little. Since I didn't want to mess with the tiny bolts on the...

I tried using a couple lights to reduce the rogue cells and then on them while charging, but the others never got close, and the charger would outrun the light current to kick off the BMS. The cell voltage all leveled off since yesterday and was down to 3.33 on all cells. That quickly changed on...