Search found 212 matches

by bobbill
Sep 16 2021 5:39am
Forum: EBike Technical
Topic: Cell Balance and BMS Question/
Replies: 7
Views: 207

Re: Cell Balance and BMS Question/

Thanks, John, makes sense to this dodger!
by bobbill
Sep 15 2021 10:56am
Forum: EBike Technical
Topic: Cell Balance and BMS Question/
Replies: 7
Views: 207

Re: Cell Balance and BMS Question/

As I surmised! Thank-you both... Reality matches logic, 'cept maybe in Quantum Mechanics and MAGA minds. And, seems to me, if so and one or so cells do exceed .5V variance, the over limit cells will (at rest) eventually balance to other cells. Why I did not set series connections right off. Please d...
by bobbill
Sep 14 2021 10:00am
Forum: EBike Technical
Topic: Cell Balance and BMS Question/
Replies: 7
Views: 207

Cell Balance and BMS Question/

I am a NooB which may for may not be obvious. I know nada. My questions: If one places multiple (Say 7 or more cells) in a pack and all are within .5 or half a volt difference, Will the cells balance themselves -sans BMS? Does or will a BMS balance cells in a pack (these same cells) on its own, with...
by bobbill
Sep 08 2021 6:12am
Forum: EBike Technical
Topic: New BMS
Replies: 17
Views: 407

Re: New BMS

Led BMs nice...Doc I found it and the link now works...???? no clue why it did not...timing>>>

Thanks.
by bobbill
Sep 07 2021 7:21am
Forum: EBike Technical
Topic: New BMS
Replies: 17
Views: 407

Re: New BMS

Doc, link is dead for me...but interested enough to search.
Thanks...
by bobbill
Sep 06 2021 6:59am
Forum: EBike Technical
Topic: New BMS
Replies: 17
Views: 407

Re: New BMS

Dig that...

Where does one place controller on a longboard?

Is speed maker in-hand and wireless,

Same is "Controller?"

I have made boards but all were manual, FWIW. Curious NooB that I am.
by bobbill
Sep 05 2021 2:25pm
Forum: EBike Technical
Topic: New BMS
Replies: 17
Views: 407

Re: New BMS

+1.
Speed and bullshit kills....

but hard to devine the facts (truth) too often, for us NooBs/
by bobbill
Sep 05 2021 6:17am
Forum: EBike Technical
Topic: New BMS
Replies: 17
Views: 407

Re: New BMS

I thought BMS had to match use current. OP...if instructions are unclear, return item to Amazon for credit...I understand time compression, but it is what it is. Amazon should issue credit fast. Wet Electrics are not compatible ever. I am NooB also, seems we Noobs must scratch for low cost process. ...
by bobbill
Aug 25 2021 6:19am
Forum: Battery Technology
Topic: Homemade Battery Packs
Replies: 1734
Views: 533481

Re: Homemade Battery Packs

Yikes! Very nice power....

So slick it makes me wonder, do we do packs to be Kewl or are pragmatic? IRetorical)


And thanks...the probes can get to groups...figuring each is accessible...very nice...takes me awhile...thanks.
by bobbill
Aug 24 2021 8:47am
Forum: Battery Technology
Topic: Homemade Battery Packs
Replies: 1734
Views: 533481

Re: Homemade Battery Packs

Me agrees with Dk Angel

Takes me awhile...how do you read Ps through the cover holes?
by bobbill
Aug 24 2021 8:32am
Forum: Battery Technology
Topic: Homemade Battery Packs
Replies: 1734
Views: 533481

Re: Homemade Battery Packs

Angel, get the refund, start over...FWIW! Seems shipping is gone, which you likely knew.

I live in Small Town, USA and figure no one here has what I need, which they do not, even big boxers, so do lots of on line buys...if item shows in query.
by bobbill
Aug 20 2021 8:52am
Forum: Battery Technology
Topic: Homemade Battery Packs
Replies: 1734
Views: 533481

Re: Homemade Battery Packs

If you end up having to keep...let me know...may have link to how to revive cells...

Sorry to hear....
by bobbill
Aug 16 2021 4:47am
Forum: EBike Technical
Topic: Noob ?
Replies: 16
Views: 369

Re: Noob ?

And, I add tihis: What if your HS Physics teacher concentrated more on something besides electrics? I taught...options exist.
by bobbill
Aug 12 2021 9:16am
Forum: EBike Technical
Topic: Noob ?
Replies: 16
Views: 369

Re: Noob ?

Finally, learned why I love Agniusm's AGtech - NESE - packs...and learned the advantage and meaning of "prismatic."
by bobbill
Aug 10 2021 3:37pm
Forum: EBike Technical
Topic: Noob ?
Replies: 16
Views: 369

Re: Noob ?

Blacklite,I dig what you are saying but my classroom learning was confined and 18650s did not exist. I know electricity, But pack building is not so common and lots of people advise from experience. Exp and sci are not the same... Am new at his and bought into some dangerous advice and had a melt......
by bobbill
Aug 09 2021 6:36am
Forum: EBike Technical
Topic: Noob ?
Replies: 16
Views: 369

Re: Noob ?

HK, Hobbies like RC-ing and e-longboarding will make the day. Forgot. Am beginning to note voltage more carefully. And already erred in notations...the .6 used was really .61 to .65, with emphasis on the last digit or the hundredths of a volt... Agniusm advised to get the variances down, so the BMS ...
by bobbill
Aug 08 2021 10:15am
Forum: EBike Technical
Topic: Noob ?
Replies: 16
Views: 369

Re: Noob ?

HK I goofed. All the cells are .6 some may be .60 some might be .69. Got my tenths and hundredths decimals messed. Still, .6 is very small...? But, might give it aa shot to make all very equal... Sperry is digital, Bought it couple years back. So. How did all y'all find this stuff out; school, by tr...
by bobbill
Aug 08 2021 8:59am
Forum: EBike Technical
Topic: Noob ?
Replies: 16
Views: 369

Re: Noob ?

HK appreciate it...figured after a bit...meter does not make it series. .05? That is fairly close. These cells range from 3.00 to 3.6 and are grouped together, to reduce BMS labors. I think I can adjust the voltage closer on some. Figured if cells were grouped the meter would measure sum of cell cur...
by bobbill
Aug 08 2021 8:22am
Forum: EBike Technical
Topic: Noob ?
Replies: 16
Views: 369

Noob ?

I have x cells in P and I take my trusty meter and connect it to the plus (+) and minus (-) of cell group, is that reading a series measure or balance figure. IOW does the meter itself make up a circuit? I know it is a basic question, and answer likely in Sperry directions but directions are and I a...
by bobbill
Aug 06 2021 4:42am
Forum: Battery Technology
Topic: Homemade Battery Packs
Replies: 1734
Views: 533481

Re: Homemade Battery Packs

John, no problem. Am learning, and, for me, current money is in 18650a. Thanks...learning new stuff is fun. I figure DC is DC and might make changes later, but taking time.
by bobbill
Aug 05 2021 12:18pm
Forum: Battery Technology
Topic: Homemade Battery Packs
Replies: 1734
Views: 533481

Re: Homemade Battery Packs

LFP cell are interesting, but in for a penny on 18650s
by bobbill
Aug 04 2021 9:32am
Forum: Battery Technology
Topic: Homemade Battery Packs
Replies: 1734
Views: 533481

Re: Homemade Battery Packs

Dark Angel, Dig, but most is way over this dodger'ss noggin. Am a simple dodger who powers me two bikes (now) to ride, using 18650 packs, which am sure will be replaced with trickier, more juiced cells, in short time... Opps, am now doing mower...was using wet 36 but replacing with 10s7p pack. Kinda...
by bobbill
Aug 04 2021 7:21am
Forum: Battery Technology
Topic: Homemade Battery Packs
Replies: 1734
Views: 533481

Re: Homemade Battery Packs

John appreciate the info. Every cell I have acquired, which, admittedly is only 120 cells, or so, has been at 3.6 V which coincides with advice I have received here as optimum storage and at rest voltage. So, I set all to same voltage...as singles. Pack is different. Only cells I use, so far. Pre-pa...
by bobbill
Jul 29 2021 3:50am
Forum: EBike Technical
Topic: BMS Recoms for 36v 10s7P Pack
Replies: 5
Views: 156

Re: BMS Recoms for 36v 10s7P Pack

HK, bought 72 NCR PFs from parellelminer.com. Way low cost too, seemed to me.
Have to layout build plan,

Mark, V had no option to replace damaged components along with an attitude - forget them,
by bobbill
Jul 28 2021 7:09am
Forum: EBike Technical
Topic: BMS Recoms for 36v 10s7P Pack
Replies: 5
Views: 156

Re: BMS Recoms for 36v 10s7P Pack

Thank-you,HK, I am a believer in "simple" and went through a very careful Vruzend assembly and had two failures (heat and out of balance stoppage) and do not wish to repeat. The BMSs supplied worked well (I think) and if I do the larger pack, need similar assurance is all. Seems I spend mo...