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Guys I am using an ANT BMS with a 18 AMP 48 V battery pack to drive a 1000 w bicycle motor. If I start and run the motor in the air I have no problem running it. However when I sit on the bicycle and try to power up my BMS errors out with a short circuit message. (And no comments about me being...

OK, you are a bunch of smart techies, I have an old radio in my office that has a really lovely sound to it. Unfortunately the FM reception where is is sucks. Can anyone recommend some kind of way to boost the FM signal without having a bunch of cords lying around. All advice appreciated.

I have not made much progress, hopefully over the next few weeks.

This where my understanding of electricity gets hazy. By my understanding a resistor is a load and therefore theoretically would not short. However I presume a low value resistor is really not a load at all and this is when a short occurs. I'm sure there is some fancy math to determine when a...

Ok so this is what I am thinking of doing 16S pack Connect all positive leads of active balancer to each cell (Sam as BMS) Connect negative lead of cell to resistor I have a 6.8 ohm at hand. Is that too low Connect negative lead to battery Let me know if this sounds right

Could not find it

Can you share details of how you pre-charge the capacitors. Did you use a power supply and what value resistor? How did you set up the wiring?.

I need help with My ANT BNS Settings. Specifically these 2 screens. One is the connect resistance and one is the Hall speed sensor. For the resistance I presume I shoudl measure each cell and use that or use the spec supplied by manufacturer. On the hall sensor I have no idea All help appeciated

Mike, How would a a battery charger be different and provide a better alternative? I imagine a battery charger would also have a a hard time determining SOC.

Hi Mike, I'm intending to use it as a battery charger as I like if for the following Reasons 1) You can set a high voltage cutoff independent of the use selectable high voltage 2) I intend to use it to charge my 48 v to power my yacht motor. As such I want to be able use it to top the...

Guys, I would like to put a Diode in series for charging my 48V Bank. Charger will be a Xantrex XFR 60-20 pushing out 20 Amps. Can anyone give me the specs of the diode I should use ?

So what is the best way to top balance based on this understanding?

Im using a Xantrax XHR 20-50. Max Amps is 50. Batteries are 200AH with 1C. Am I right in that .2c would be 40 Amps multiplied by 20 batteries = 800Amps?

Makes sense, thank you

Couple of novice questions regarding balancing 1) Im balancing 20 cells in parallel. Surely the voltage at the furthest terminal from my power supply will end up with less voltage due to resistance on my busbars. How do i solve for this? 2) Related to this, how tight do I need to make my...

I'm gonna assume it should be white and move forward, thank you

Yup. Anyway to check what it might be for?

Guys, On the ANT BMS the left hand balance connector has 10 white wires and 2 red wires. The right hand one has 1 black and 13 white. This gives me a total of 23 white. I know that the black is the neg and the final red is supposedly power for BMS. I'm presuming the second to last red is the...

Ok so I have a further question I have been testing a Xantrex Power Supply. You can set voltage and current as well as activate the over voltage protection on the power Supply. Why would I not just use this as my charger. Do I need an MPPT or PWM at all?

Thanks, this is a good lesson in importance of good connections

So it looks as though the culprit is my connection at the cell. See voltages below on Display = 3.06 at Load tester terminals =3.168 At Battery-on top of connectors = 3.188 On Battery Terminals = 3.275

Mine seems to disconnect at 2.6 v

Images below. Wire is 12AWG

It was on display. Voltage at battery was about 3.2V

So I charged an individual 200AH Eve cell to 3.595 volts to do cacity test. I used the cheap tester as tested by Will (I've used it before so I know it works) Connected my battery and then attempted to run test. As soon as I tried to increase the amperage it dropped the voltage to below 2 .6v...

Good Morning Everyone. One of my anticipated hurdles in the build of my marine bank is the tendency of the Eve cells connections to strip upon assembly. Here is my plan for assembly. Comments appreciated I am going to use Loctite Threadlocker 272 to install 20mm studs into batteries. Tighten...

Thanks Guys. I will digest and let you know if I have more questions

Thank you, appreciate the input

I have moved this to its own thread

Im building a 200 Ah 48v supply for my boat. I want to use the following to charge it. Does anyone see any issues? Power Supply =Xantrex XFR 60-20 DC Power Supply (60v 20A adjustable) MPPT = Victron Energy SmartSolar MPPT 100V 20 amp 12/24/48-Volt Solar Charge Controller (Bluetooth) Main...

You do you dude :) I have no skin in this game, Moderator please let me know forum etiquette.

Down Karen :) Similar question, prevents multiple threads, Don't be that guy

Im building a 200 Ah 48v supply for my boat. I want to use the following to charge it. Does anyone see any issues? Power Supply =Xantrex XFR 60-20 DC Power Supply (60v 20A adjustable) MPPT = Victron Energy SmartSolar MPPT 100V 20 amp 12/24/48-Volt Solar Charge Controller (Bluetooth)

Can you send me details of your setup? What 60V 8A power supply did you use?

Awesome, thanks, that's what I thought