Search found 1039 matches

by goatman
Jul 06 2020 10:45pm
Forum: Battery Technology
Topic: MNKE 26650 5000mah cycle test
Replies: 4
Views: 55

Re: MNKE 26650 5000mah cycle test

not sure what is going on with this battery but at 3.55v its at 3650mah. im wondering if its similar to the 26800 that stops at 3.0v

viewtopic.php?f=14&t=98327

heres a different view 3.5v/4200mah

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by goatman
Jul 06 2020 7:11pm
Forum: Battery Technology
Topic: 40T, neodymium magnets, plasti dip cycle test
Replies: 104
Views: 1980

Re: 40T, neodymium magnets, plasti dip cycle test

no problems, still stretchy and elastic, you can see it stretching in this photo. i used a knife to cut it to peel it back like that

Image
by goatman
Jul 06 2020 5:39pm
Forum: Battery Technology
Topic: 40T, neodymium magnets, plasti dip cycle test
Replies: 104
Views: 1980

Re: 40T, neodymium magnets, plasti dip cycle test

i did 421 cycles with these magnets, they are 3/8x1/8x1/8, 12 gauge copper wire and constant temperatures from 95f to 101f peeled back negative https://i.imgur.com/qZX4c3u.jpg positive https://i.imgur.com/Q1TY8wv.jpg the magnet is still strong and can hold the battery sideways https://i.imgur.com/ED...
by goatman
Jul 06 2020 4:20pm
Forum: Battery Technology
Topic: MNKE 26650 5000mah cycle test
Replies: 4
Views: 55

Re: MNKE 26650 5000mah cycle test

not much information on this battery, going to try same settings as 40T but with different magnets and copper slug tape. https://i.imgur.com/zbWmk6f.jpg https://i.imgur.com/AY8fmg0.jpg 1.75"x3" tape https://i.imgur.com/KzhuLT4.jpg https://i.imgur.com/fztJ2qU.jpg https://i.imgur.com/IQOofhp.jpg Plast...
by goatman
Jul 06 2020 4:15pm
Forum: Battery Technology
Topic: MNKE 26650 5000mah cycle test
Replies: 4
Views: 55

MNKE 26650 5000mah cycle test

saved for 4.2v-3.2v capacity tests

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by goatman
Jul 06 2020 1:51pm
Forum: E-Bike Technical
Topic: The p.o.s Hailong HL-3 (Jumbo Shark) battery case - remedy or replace and with what?
Replies: 8
Views: 156

Re: The p.o.s Hailong HL-3 (Jumbo Shark) battery case - remedy or replace and with what?

Yes, I realized that regular bottlemounts would be insufficient. My frame has no bottlemounts anyway so my plan was to drill 4 holes through the tube and use bolts to mount the slider to my frame. I dont know if I would trust rivnuts, but If there are enough of them that would probably work too. I ...
by goatman
Jul 06 2020 1:38pm
Forum: Battery Technology
Topic: 40T cycle test
Replies: 23
Views: 695

Re: 40T cycle test

the cell was getting damaged by the 3.6amp charge and was losing about 2mah per cycle over the first 100 cycles until i switched to starting charge at 2amps and finishing with 3.75a-0.10c/o, you could see the damage at the 4.2-2.5 capacity chart at cycle 125 and then the damage stopped. makes me thi...
by goatman
Jul 06 2020 12:30am
Forum: Battery Technology
Topic: 40T cycle test
Replies: 23
Views: 695

Re: 40T cycle test

#400 discharge was 3016mah, #100 discharge was when i had figured out the charge/discharge settings and that was 3176mah.

the battery lost 160mah over the last 300 cycles.

going to put this test on hold after discharge #450 to test another cell
by goatman
Jul 03 2020 12:35am
Forum: Alternative Energy
Topic: Off the grid Chicken coop
Replies: 6
Views: 127

Re: Off the grid Chicken coop

you might try digging a hole, fill it full of compost with a waterpipe loop in it for hot water heating, if youre lower than the chicken coop you wont need a pump, just a valve to control temperature. heres a video to get you started if you want to look into it. tons of videos on it. https://www.you...
by goatman
Jul 02 2020 6:57pm
Forum: Battery Technology
Topic: Sur-Ron Charger wired Backward?
Replies: 6
Views: 118

Re: Sur-Ron Charger wired Backward?

Luna is priceless, i sent them the picture asking if the red charge wire is positive and they said, WE DONT KNOW BUT YOU PROBABLY FRIED THE CHARGER, thats hilarious, i havent plugged a battery to it yet :lol:

i pulled the potting compound, red wire is positive

Image
by goatman
Jul 02 2020 4:25pm
Forum: Battery Technology
Topic: Basic noob battery questions.
Replies: 7
Views: 98

Re: Basic noob battery questions.

you checked both of those fuses?
by goatman
Jul 02 2020 12:03pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Hire E-Bike build thread
Replies: 43
Views: 4821

Re: Hire E-Bike build thread

look at the sticker on BMS, big blue wire is P-, goes to controller
big black wire, B-, that goes to the battery negative.
little black wire coming out the side is C-, that goes to charger negative.
by goatman
Jul 02 2020 12:16am
Forum: Battery Technology
Topic: Sur-Ron Charger wired Backward?
Replies: 6
Views: 118

Re: Sur-Ron Charger wired Backward?

no soot on the plate, all pins are fine and nothings burnt, maybe it was black felt? https://i.imgur.com/bFsQ26i.jpg heres the temp? sensor https://i.imgur.com/A7fCXFf.jpg hooked up DMM https://i.imgur.com/OIoU5AT.jpg held in fingers numbers drop the warmer it gets, let go numbers go back up https:/...
by goatman
Jul 01 2020 8:49pm
Forum: Battery Technology
Topic: Sur-Ron Charger wired Backward?
Replies: 6
Views: 118

Re: Sur-Ron Charger wired Backward?

I emailed Luna, waiting for a reply, but I also noticed some soot on the white connector that comes from the 2 signal wires on the chord. is that a temperature switch on the charge chord? https://i.imgur.com/MlpsprJ.jpg?1 I don't think there will be any warranty on this since ive opened it up :D i g...
by goatman
Jul 01 2020 7:56pm
Forum: Battery Technology
Topic: 40T cycle test
Replies: 23
Views: 695

Re: 40T cycle test

4.2v-2.5v capacity test is done after 375 cycles, 3818mah. 90% of initial 4216mah

Image
by goatman
Jul 01 2020 4:09pm
Forum: Battery Technology
Topic: Sur-Ron Charger wired Backward?
Replies: 6
Views: 118

Re: Sur-Ron Charger wired Backward?

this is where the black is going

Image

this is the red

Image
by goatman
Jul 01 2020 3:25pm
Forum: Battery Technology
Topic: Sur-Ron Charger wired Backward?
Replies: 6
Views: 118

Re: Sur-Ron Charger wired Backward?

fechter had this picture but cant see the color of the wire

viewtopic.php?f=28&t=89902&p=1490373&hi ... r#p1490373
by goatman
Jul 01 2020 3:21pm
Forum: Battery Technology
Topic: Sur-Ron Charger wired Backward?
Replies: 6
Views: 118

Re: Sur-Ron Charger wired Backward?

where the red wire comes into the charger this is where it goes into the board

Image

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by goatman
Jul 01 2020 2:48pm
Forum: Battery Technology
Topic: Sur-Ron Charger wired Backward?
Replies: 6
Views: 118

Sur-Ron Charger wired Backward?

I put an xt60 on plugged it in grabbed DMM and got this

Image

WTF?
by goatman
Jul 01 2020 1:24pm
Forum: Battery Technology
Topic: Source for US 18650 cells
Replies: 4
Views: 105

Re: Source for US 18650 cells

billyjones454 wrote:
Jul 01 2020 12:35pm
Thank you! I'm trying to find Samsung 30Q's at a reasonable price. They're pretty much sold out everywhere.
see if this member has any left

viewtopic.php?f=31&t=104337&p=1527446&h ... q#p1523327
by goatman
Jul 01 2020 12:05pm
Forum: E-Bike General Discussion
Topic: sur-ron 10amp charger adjustable?
Replies: 1
Views: 77

Re: sur-ron 10amp charger adjustable?

I got my charger today, whats the signal wire for? i needed to put my own end on it and when i pulled the plug off there was 2 wires but 3 wires coming out the charger
by goatman
Jun 30 2020 7:51pm
Forum: Battery Technology
Topic: Source for US 18650 cells
Replies: 4
Views: 105

Re: Source for US 18650 cells

lots of places if you look,

imr https://www.imrbatteries.com/18650-batteries/

18650 battery store, ive bought from but wouldn't recommend buying from them right now if youre in Canada. https://www.18650batterystore.com/18650 ... -s/106.htm