Search found 7243 matches

by john61ct
May 17 2022 8:21am
Forum: Battery Technology
Topic: When will 4680 cells be available to the public?
Replies: 38
Views: 1844

Re: When will 4680 cells be available to the public?

G8trwood wrote:Is there a point in prismatics where the mass of the cell/electrodes become unsuitable for high vibration EV use? 25@h, 100ah, 200ah type question.
Yes, the manufacturers will state at which point "only for stationary".

Personally if no info available, I would stay under 300Ah
by john61ct
May 16 2022 7:42am
Forum: Battery Technology
Topic: When will 4680 cells be available to the public?
Replies: 38
Views: 1844

Re: When will 4680 cells be available to the public?

Big cargo bike designed for climbing mountain roads with 500+ lb loads, they'd be just fine
by john61ct
May 15 2022 1:37pm
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 1644
Views: 196317

Re: Nucular electronics - complete kit for ev! [beta]

Long time ago I saw news they suspended all but the 24f
by john61ct
May 15 2022 9:51am
Forum: Battery Technology
Topic: When will 4680 cells be available to the public?
Replies: 38
Views: 1844

Re: When will 4680 cells be available to the public?

I hope you aren't trying to say there's anything wrong with Winstons / Thundersky?
by john61ct
May 11 2022 10:23am
Forum: Items for Sale - New
Topic: QSMOTOR,0.5-12kW Electric Hub Motor & Mid Drive Motor Manufacture China
Replies: 1517
Views: 348720

Re: QSMOTOR,0.5-12kW Electric Hub Motor & Mid Drive Motor Manufacture China

QS is afaik a marketing alliance composed of many independent manufacturers.

Perhaps there are multiple operators of their various sales channels, independent as well.
by john61ct
May 07 2022 12:56pm
Forum: Items for Sale - New
Topic: QSMOTOR,0.5-12kW Electric Hub Motor & Mid Drive Motor Manufacture China
Replies: 1517
Views: 348720

Re: QSMOTOR,0.5-12kW Electric Hub Motor & Mid Drive Motor Manufacture China


j bjork wrote:
A link to the motor you want the sprocket to fit would also be helpful to those who might know.
Their data is not so reliable

they don't even have stable model#s

many factories involved, specs change

really need the motor in hand to be sure.

by john61ct
May 05 2022 11:51am
Forum: Alternative Energy
Topic: stealing "energy" from your workplace? stories?
Replies: 10
Views: 413

Re: stealing "energy" from your workplace? stories?

Exactly.

Would be similar to them getting fussy about someone drinking too much water
by john61ct
May 04 2022 6:28pm
Forum: Battery Technology
Topic: When will 4680 cells be available to the public?
Replies: 38
Views: 1844

Re: When will 4680 cells be available to the public?

Key is the cross-section dimensions you have available for the batt pack as a whole.

An 8*6" tall block 20+ inches long would not fit many designs.

Much as I hate fussing with the small cylindricals, they do give a lot of layout flexibility
by john61ct
Apr 30 2022 6:49pm
Forum: Battery Technology
Topic: The Cycle Satiator, universal charger for the enthusiasts
Replies: 893
Views: 166509

Re: The Cycle Satiator, universal charger for the enthusiasts

I'm wondering if maybe there could be issues with them running off ~240V? ... My AC also often peaks at 250V+ due to too many people in my area with solar (whole other issue that one!), so I wonder if the Satiator can't handle the higher voltage AC input? Spec sheet states: 100-240V AC Input Range ...
by john61ct
Apr 27 2022 3:52am
Forum: Items for Sale - New
Topic: ASI BAC Controllers Worldwide Vendor
Replies: 210
Views: 35198

Re: ASI BAC Controllers Worldwide Vendor

Contact them here, or via DM
by john61ct
Apr 26 2022 3:00pm
Forum: EBike Technical
Topic: Which BMS does EM3ev use?
Replies: 33
Views: 1120

Re: Which BMS does EM3ev use?

Depends on amps needed Satiator model #4808 "24V-52V" has an output range of 24-63V (manual states 12-63V) But only provides 7-8A An adjustable HVC can help keep costs down a lot, can get away with dumb PSU rather than a proper self-terminating charger. Telecom PSUs are around 48V just rev...
by john61ct
Apr 26 2022 12:46pm
Forum: Items for Sale - New
Topic: 160 KW 72v Cntroller QS/Yuma 15KW 300A BMS
Replies: 55
Views: 2257

Re: 160 KW 72v Cntroller QS/Yuma 15KW 300A BMS

Which only increases the perception of shady dealings.

I am only interested in such discussions taking place in public
by john61ct
Apr 26 2022 8:59am
Forum: EBike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4785
Views: 959395

Re: Cycle Analyst V3 preview and first beta release

RIP

And kudos to Justin, thanks for updating here, and for all you've done, and do for the community
by john61ct
Apr 22 2022 5:44pm
Forum: EBike Technical
Topic: Which BMS does EM3ev use?
Replies: 33
Views: 1120

Re: Which BMS does EM3ev use?

I meant, to even view the info, via that link.
by john61ct
Apr 21 2022 4:07pm
Forum: EBike Technical
Topic: Which BMS does EM3ev use?
Replies: 33
Views: 1120

Re: Which BMS does EM3ev use?

seems to require logging into an account
by john61ct
Apr 19 2022 7:25pm
Forum: EBike Technical
Topic: Which BMS does EM3ev use?
Replies: 33
Views: 1120

Re: Which BMS does EM3ev use?

Actually that thread so big and old, maybe best to start a new one, put the make/model in the title for future google fu.
by john61ct
Apr 19 2022 7:23pm
Forum: EBike Technical
Topic: Which BMS does EM3ev use?
Replies: 33
Views: 1120

Re: Which BMS does EM3ev use?

Great data point thanks. LLT Power is a JBD subsidiary SMART BMS thread. Is there a guide on how to wire em up in that thread? As I could use a little help with that as they came without instructions... I'm sure, but it's a long slog. Maybe just get all your notes together take clear pics of everyth...
by john61ct
Apr 19 2022 11:50am
Forum: Items for Sale - New
Topic: 160 KW 72v Cntroller QS/Yuma 15KW 300A BMS
Replies: 55
Views: 2257

Re: 160 KW 72v Cntroller QS/Yuma 15KW 300A BMS

That's a lot of words, and some pretty convoluted. I never saw anyone here state that infinite support should be free, in fact very much the opposite. What we need is CERTAINTY that the conditions (and pricing if any) of getting that support will not change after you have our money. That a deal made...
by john61ct
Apr 18 2022 12:37am
Forum: Battery Technology
Topic: Cycle life tests of High Energy density cylindrical cells
Replies: 23
Views: 1993

Re: Cycle life tests of High Energy density cylindrical cells

There are lots of factors affecting longevity. Yes LI should only get charged to high SoC just before loads will be pulling it back down, stored in the 40-60% band when not cycled. Not charged too high in the first place, average DoD is a critical one. Not discharged too fast. Not fast charged in co...
by john61ct
Apr 17 2022 2:54am
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 1548
Views: 242993

Re: kWeld - "Next level" DIY battery spot welder

Yes MOAR is better, would love to get copper thicker than 0.1mm Also trying to figure the best fixing method, copper-to copper transition from plate/foil to fine-stranded tinned marine wire for the series connections, looking for structurally strong connections stand up to big shock/vibration stress...
by john61ct
Apr 17 2022 2:15am
Forum: EBike Build Threads
Topic: leaning trike cargo bike front end kit
Replies: 203
Views: 37815

Re: leaning trike cargo bike front end kit

How do you coordinate all those controllers?
by john61ct
Apr 17 2022 2:13am
Forum: Battery Technology
Topic: Cycle life tests of High Energy density cylindrical cells
Replies: 23
Views: 1993

Re: Cycle life tests of High Energy density cylindrical cells

Normal usage by users who care about longevity also never goes near 100% DoD, that is murderous practice. If your LVC stop-discharge is calibrated to say 3.4V isolated at rest, I bet that is **way** above 90% DoD Just a 5% higher average DoD can double or triple lifespan. But that factor must vary w...