Search found 1753 matches

by goatman
Apr 12 2021 6:44pm
Forum: Battery Technology
Topic: "desulfate" 40T and 30Q and VTC6 and P42a
Replies: 39
Views: 1690

Re: "desulfate" 40T and 30Q and VTC6 and P42a

Like me have you come to the conclusion that draining the cells to 2.5v does not "desulfate" (restore lost capacity), but in fact most likely does more harm than good to their remaining usefulness (cycle life) ? no i disagree im going to "desulfate" these packs every 100 cycles ...
by goatman
Apr 12 2021 6:25pm
Forum: Battery Technology
Topic: "desulfate" 40T and 30Q and VTC6 and P42a
Replies: 39
Views: 1690

Re: "desulfate" 40T and 30Q and VTC6 and P42a

the 96 cells 3 are still self discharging 68 i built a pack, 17s4p the remaining 25 cells i equalized with 23 left overs from the first build IMG_20210412_155123.jpg 42 of those have been sitting at 3.71v for a week the 6 off to one side are sitting at 3.70v the black wrapped cells i did my own resi...
by goatman
Apr 11 2021 10:03pm
Forum: EBike Troubleshooting
Topic: Phaserunner stops wheel moving?
Replies: 4
Views: 171

Re: Phaserunner stops wheel moving?

crystalite has 23 poles gmac has 80 ca3 splitter you have 1 ca3 i think your problem is 2 different motors on 1-ca3 but i really dont know i wonder what the guy in victoria did, he has a geared hub upfront and a dd on the rear tigcross https://endless-sphere.com/forums/viewtopic.php?f=6&t=100348...
by goatman
Apr 10 2021 9:26am
Forum: Battery Technology
Topic: is there a prob in this battery diy plan with prebuid case?
Replies: 22
Views: 1045

Re: is there a prob in this battery diy plan with prebuid case?

want to build wrote:
Apr 09 2021 11:26pm
goatman wrote:
Apr 09 2021 11:23pm
id stay away from spot welding in the red circle
tx for clarity . would you be offended if i ask others their take on that?
not at all
by goatman
Apr 09 2021 11:23pm
Forum: Battery Technology
Topic: is there a prob in this battery diy plan with prebuid case?
Replies: 22
Views: 1045

Re: is there a prob in this battery diy plan with prebuid case?

id stay away from spot welding in the red circle
by goatman
Apr 09 2021 10:06pm
Forum: EBike Troubleshooting
Topic: Phaserunner Suite - troubleshooting
Replies: 5
Views: 151

Re: Phaserunner Suite - troubleshooting

so you saved parameters
did you "click" clear faults before saving?
IMG_20210409_200239.jpg
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by goatman
Apr 09 2021 8:13pm
Forum: Battery Technology
Topic: is there a prob in this battery diy plan with prebuid case?
Replies: 22
Views: 1045

Re: is there a prob in this battery diy plan with prebuid case?

youre getting lost on spot welding to the center of the negative end its kind of a non issue 60 amps from 5p thats 12 amps per cell download (2).jpg if you are dead set on spot welding to the center where are the rest of the spot welds going to be ???? how are you going to spot weld to the center wi...
by goatman
Apr 09 2021 7:55pm
Forum: Battery Technology
Topic: Spot Welding Copper Strips to 18650 Battery Cells
Replies: 505
Views: 85801

Re: Spot Welding Copper Strips to 18650 Battery Cells

i didnt see your picture before if you bend a wire you usually dont want to be tighter than 4-8 outside diameters if your using 0.1mm sheet cant you fasten a 20 gauge/ 0.8mm copper wire to the fold/crease or use 0.8mm x 8mm teflon tape you tape it where you want the fold and fold over the battery ht...
by goatman
Apr 08 2021 11:34pm
Forum: Battery Technology
Topic: Spot Welding Copper Strips to 18650 Battery Cells
Replies: 505
Views: 85801

Re: Spot Welding Copper Strips to 18650 Battery Cells

im waiting for 0.1mm copper right now to see if i can twist crimp with 18 gauge wire, lock the twist with a dab of solder and trim

this is 0.03 foil but its too thin
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IMG_20210408_212204.jpg
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by goatman
Apr 08 2021 8:11pm
Forum: EBike General Discussion
Topic: Upgrade old battery or get new one?
Replies: 8
Views: 228

Re: Upgrade old battery or get new one?

if you live in the lower mainland of BC
you can give Phenom battery your case and he will build you one to fit your case

https://www.facebook.com/phenombattery/
by goatman
Apr 07 2021 11:44pm
Forum: Battery Technology
Topic: gopro drone battery 0v
Replies: 2
Views: 78

Re: gopro drone battery 0v

twist together
black,purple and green for the grounds
touch the yellow and it powers up
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by goatman
Apr 07 2021 8:48pm
Forum: Battery Technology
Topic: gopro drone battery 0v
Replies: 2
Views: 78

Re: gopro drone battery 0v

the leds werent working before but now i have 3 out of 4 on the meter IMG_20210407_183447.jpg ive got power all the way upto these chips IMG_20210407_170725.jpg IMG_20210407_170454.jpg i think all i need to figure out now is which of these wires turns on the board IMG_20210407_183611.jpg black purpl...
by goatman
Apr 07 2021 7:38pm
Forum: Battery Technology
Topic: gopro drone battery 0v
Replies: 2
Views: 78

gopro drone battery 0v

sold the drone awhile ago but couldnt find the spare battery i found it at 0v couldnt find anything about opening them up so i just ripped into it you only need to pop the top off IMG_20210407_165529.jpg IMG_20210407_165713.jpg IMG_20210407_165838.jpg IMG_20210407_165928.jpg IMG_20210407_170004.jpg ...
by goatman
Apr 06 2021 6:55pm
Forum: Alternative Energy
Topic: Running a house on an e-motorcycle battery?
Replies: 63
Views: 1169

Re: Running a house on an e-motorcycle battery?

there was someone venting on craigslist about how Victron costs so much when Fangpuson is made in the same factory
i dont know if thats true but heres a link to that site, they look identical
https://www.fangpusun.com/mppt150-45-70

moderators deleting your comments???

hope thats not true
by goatman
Apr 05 2021 2:22pm
Forum: Vendor Relations Corner
Topic: EM3ev vs Luna Batteries and Kits
Replies: 59
Views: 7024

Re: EM3ev vs Luna Batteries and Kits

if im on a site and go to the check-out to pay everything is paid for at that time thats it, no more fees if i want to buy a 18650 battery from Georgia at check out itll be $4 for the battery and $25 for shipping at check out the real price is $29 for that battery no more bills so at that moment i c...
by goatman
Apr 05 2021 10:14am
Forum: EBike Technical
Topic: BMS destroyed my battery?!
Replies: 51
Views: 949

Re: BMS destroyed my battery?!

if they had a bluetooth bms like the Ant bms you could set the lvc at 2.5v program balancing to start at 2.8v I've never heard of a protective BMS that bottom balances. Only dedicated balancers ( marketed as "non-protective BMS") or node charging can middle or bottom balance afaik > i thi...
by goatman
Apr 05 2021 12:20am
Forum: EBike Troubleshooting
Topic: why did battery cut out?
Replies: 9
Views: 160

Re: why did battery cut out?

i do 36km all the time without pedalling on my trike, high speeds, hilly and the ca3 shows 12.6ah
if you look at the 30Q test in my signature the capacity from 4.2v to 3.2v is around 2400 mah x 6p=14.4ah
like markz said, sounds about right
by goatman
Apr 04 2021 10:01pm
Forum: Battery Technology
Topic: is there a prob in this battery diy plan with prebuid case?
Replies: 22
Views: 1045

Re: is there a prob in this battery diy plan with prebuid case?

you want me, cast away to carry the sins of the community into the desert?
ya sure, im fine with that :D

i already said above, im not a spot welder

atleast youre out there watching videos :bigthumb:

eventually you need to stop analyzing and just do it
by goatman
Apr 04 2021 5:19pm
Forum: EBike Technical
Topic: BMS destroyed my battery?!
Replies: 51
Views: 949

Re: BMS destroyed my battery?!

all the data is here on ES to back what im saying. Yeah, I skimmed those thread previously, but total energy was the same, and results otherwise were within an expected margin of error, so I think the conclusion of resuscitating "dead" cells is spurious. actually what im looking at is whe...
by goatman
Apr 03 2021 11:23pm
Forum: EBike Technical
Topic: BMS destroyed my battery?!
Replies: 51
Views: 949

Re: BMS destroyed my battery?!

i dont agree, theres so little capacity up top from 4.15v to 4.2v its easy to throw the pack out of balance. Balancing with unmatched cells is inherently temporary. It doesn't matter if you top balance at 4.1 or 4.2V, or bottom balance at 3.0V -- the pack will only be balanced at the voltage you ba...
by goatman
Apr 03 2021 11:08pm
Forum: EBike Technical
Topic: BMS destroyed my battery?!
Replies: 51
Views: 949

Re: BMS destroyed my battery?!

You know lithium ion batteries don't have sulfur in them, right? He just (mis)uses the term for some protocol to help "resuscitate" old worn cells. Has a whole thread with that in the title, and yes he has acknowledged it's an improper use of the term still waiting for someone to tell me ...
by goatman
Apr 03 2021 8:12pm
Forum: EBike Technical
Topic: BMS destroyed my battery?!
Replies: 51
Views: 949

Re: BMS destroyed my battery?!

i dont want to jam up this thread with pictures, it kills the flow of a thread with a huge picture that fills the page, be nice if they had those little thumb nail pictures that can be clicked on and off goatman wrote: ↑Apr 03 2021 1:43pm i disagree, if youre pushing amps into a cell at 4.2v where c...
by goatman
Apr 03 2021 3:43pm
Forum: EBike Technical
Topic: BMS destroyed my battery?!
Replies: 51
Views: 949

Re: BMS destroyed my battery?!

and if you have old cells lower your charge voltage to 4.1v instead of 4.2v Only as a function of capacity imbalance resulting in overcharge when bulk charging. If top-balancing, this is not necessary. i disagree, if youre pushing amps into a cell at 4.2v where capacity no longer exists, i believe ...
by goatman
Apr 03 2021 1:48pm
Forum: EBike Technical
Topic: BMS destroyed my battery?!
Replies: 51
Views: 949

Re: BMS destroyed my battery?!

if 1 cell in the p-group is self discharging it will pull the others down to 0volts you can think of the 0 volt cell as leaving the lights on in your car, it will drain the battery down by separating the cells you remove the load (self discharging cells) ive been trying for a week to zero volt some...