Recent content by gobi

Thanks to @daleconvert for figuring out the pins to wire color. Looking at the PCB, the labels are: 3v OUT - confirmed short blade marked in the pic is outputting 3v ENABLE - need someone to confirm this one is the other short blade SDA - I2C comm SCL - I2C comm ID - what is this...

Mine came it in at 3.53 volts, I charged it to 3.75v per cell

Thanks a bunch, I guessed that it was a TI chip counting the 44 pins, https://www.tij.co.jp/lit/ug/tidues4/tidues4.pdf 2.3.4 Wake-up Circuit DesignWhen the battery pack is first time powered on or with very low battery voltage, the system enters the shipmode and the entire system, except for...

Good work, So the 2 solders in the middle hold the pack down, Can you please post a pic of the profile of the batt (sideways view) and a close of the 5 pin connector part of the BMS (close up) 3 bank of 8 pin mosfets: Bank 1 and 3 are pass through and have nearly 0 ohm resistance, Bank 2...

8 pin mosfets, 3 banks of them

what component are these?

Floyd, I was procrastinating while you took a stab at it :D I really have on use for the batt/cells now, just bought it cuz it was cool, I want to be able to use it as is if possible. Yes, we should be able to reverse engineer the bms. My electronics chi is very low due to a decade of...

I received my order today, these packs are very very very long and bulky, as is, they are NOT usable. My sarcos pack came in with what appears to be a dead BMS (hibernating?), when I press the switch, I do not get any light. Checking each bank I found them to be at 3.55 to 3.53 v I have not...

I am planning on spraying varnish on the motor, I am guessing you did not have any bamboo pegs walk and get broken off ? Spraying Varnish: 1. Wipe surfaces with 90% alcohol couple of times and let it dry 2. Spray 2 coats? and dry in between Do I need to oven cure?

So do I worry about the bamboo pegs moving? Got it, 2 part high temp epoxy is the proper glue. Do I apply it on the top edge in RED below?

I watched Justin take off the side plates with the gear puller and I was sold, bought a cheap 8 inch for $18. Yeah, could not believe how simple it was to take off the side plate. I was and am still little scared to put my wussy, girly fingers in between the stator and the magnets. I can't...

Early summer last year, I hurt the outside of my wrist, putting weight on it brings the pain back. I wanted to build a simple, light, inexpensive rear DD motor full suspension bike using a free frame I was given by a guy on FB. I found a 500w DD motor on ebay for $103 and it looked good on...

I read on the other thread the recom you got from Chalo, I opt'd for a 17x1.4 moped rim, as the tire choices rock. not worries about weight as my chunky azz weighs much much more....

Return it, that cell with the burnt wrapper is probably damaged by the heat, wow the proper solution would have been to spot weld a tin strip to the cell and then solder the wire to it. Kudos to you for opening it up.

Yes, sorry, I would charge the bluetti off the alternator and use the bluetti and an A/C charger to charge the battery. Better and cheaper solutions for charging via AC than DC at higher voltages.