Search found 1034 matches

by The Stig
Nov 06, 2016 2:24 pm
Forum: E-Bike Technical
Topic: BMS mystery - how does it actually work?
Replies: 17
Views: 1298

Re: BMS mystery - how does it actually work?

Hi all, I have a general BMS question. I currently have two typical china-made batteries in parallel and I use one charger with them. The charger plugs into the charge port on one of them and the second gets charged through the discharge leads at 4.2V per cell. Would you expect the second battery to...
by The Stig
Oct 16, 2016 10:29 pm
Forum: E-Bike General Discussion
Topic: What to do with 10s1p battery packs that dont balance charge
Replies: 9
Views: 567

Re: What to do with 10s1p battery packs that dont balance ch

Didnt fully get how you cut your charge time in half.

Good news for me is ive never charged them to over 4.1 V. I usually keep them plugged into the charger set at 3.8 V and then set the charger to take them up to 4.1 V before I use them.
Bad mews for me may be that i use them at 3-4C.
by The Stig
Oct 16, 2016 9:56 pm
Forum: E-Bike General Discussion
Topic: What to do with 10s1p battery packs that dont balance charge
Replies: 9
Views: 567

Re: What to do with 10s1p battery packs that dont balance ch

Ok yeah, Ill do that first. Ill poke holes in the shrink wrap and check them every month or two, In the hopes that these 25Rs work their magic and keep themselves balanced
by The Stig
Oct 16, 2016 8:39 am
Forum: E-Bike General Discussion
Topic: What to do with 10s1p battery packs that dont balance charge
Replies: 9
Views: 567

Re: What to do with 10s1p battery packs that dont balance ch

Good to know the parts ill need! Ill either do that, try to sell them, or do nothing because Justin told me they would stay in balance....
by The Stig
Oct 15, 2016 11:10 am
Forum: General Discussion
Topic: Amberwolf gratitude thread
Replies: 51
Views: 2084

Re: Amberwolf gratitude thread

Thanks Amberwolf! alot of us wish we could support you and your friend more, through these tough tough times.
by The Stig
Oct 15, 2016 11:04 am
Forum: General Discussion
Topic: There was a fire at my house today while I was not home.
Replies: 1240
Views: 166632

Re: There was a fire at my house today while I was not home.

oh man, this all must be so hard for you...
by The Stig
Oct 15, 2016 11:00 am
Forum: E-Bike General Discussion
Topic: What to do with 10s1p battery packs that dont balance charge
Replies: 9
Views: 567

Re: What to do with 10s1p battery packs that dont balance ch

Thanks dan, unfortunately there are no jst plugs or balancing wires. My charger has a setting to charge them to 38 V or 41 V so I charge them a little as I can. I have run them down to LVC once. Otherwise I generally run them down to 35 - 37 V. I have 4x of these 10s1p packs. They are parallel stack...
by The Stig
Oct 13, 2016 9:07 am
Forum: E-Bike General Discussion
Topic: What to do with 10s1p battery packs that dont balance charge
Replies: 9
Views: 567

Re: What to do with 10s1p battery packs that dont balance ch

Thanks Amber, thats a good point. I just have no idea how to pick a BMS. I have 4 of these 10s1p packs that have HVC and LVC. Are there mini-balance only BMSs out there? Any ideas where i would find a BMS?
by The Stig
Oct 12, 2016 12:06 am
Forum: E-Bike General Discussion
Topic: What to do with 10s1p battery packs that dont balance charge
Replies: 9
Views: 567

What to do with 10s1p battery packs that dont balance charge

I bought these battery packs from ebikes.ca for travelling. They are small enough to take on an airplane - then they parallel stack to form a usable ebike pack. They have a BMS but apparently it only does LVC and HVC. I'm afraid that after some use they will eventually get unbalanced, and not last t...
by The Stig
Oct 04, 2016 3:25 pm
Forum: E-Bike General Discussion
Topic: Copenhagen wheel
Replies: 229
Views: 24253

Re: Copenhagen wheel

Well thats great that ebiker motivated you to pedal harder! Its kind of a funny thing to say, but mostly true i think.

Did you get the name of the rider or remember what bike frame they're on?
by The Stig
Sep 08, 2016 9:30 am
Forum: Items Wanted
Topic: Looking for 44V (12s) ebike battery, good for 60A continuous
Replies: 19
Views: 1387

Re: Looking for 44V (12s) ebike battery, good for 60A contin

Only reason I want to avoid that is to make the whole charging process seamless - just having a single connector. And so I can take the charger with me on rides, easily. If I go the with the balance charger, do you know any good sources for packs that are safe with a long cycle life? (like made of 1...
by The Stig
Sep 08, 2016 9:07 am
Forum: Items Wanted
Topic: Looking for 44V (12s) ebike battery, good for 60A continuous
Replies: 19
Views: 1387

Re: Looking for 44V (12s) ebike battery, good for 60A contin

4.35v per cell???? Not really, I hope. Dan 4.3 per cell is in extreme RC uses, like for racing. The vedder controller im using comes from the RC world. Anyway, I was just entertaining the idea. I doubt there is a 13s BMS out there that balances at 4v per cell. Most likely I'm looking for some obscu...
by The Stig
Sep 07, 2016 3:10 pm
Forum: Items Wanted
Topic: Looking for 44V (12s) ebike battery, good for 60A continuous
Replies: 19
Views: 1387

Re: Looking for 44V (12s) ebike battery, good for 60A contin

I think 12S RC LiPo voltage will land you right around 13s 18650 voltage. Yes, so I did the math and 12 cells X 4.35 v per cell is 52.2V (max voltage. 4.3 per cell is in extreme RC uses, like for racing. The vedder controller im using comes from the RC world) 13 cells X 4.0 v per cell is 52V so thi...
by The Stig
Sep 06, 2016 3:11 pm
Forum: Items Wanted
Topic: Looking for 44V (12s) ebike battery, good for 60A continuous
Replies: 19
Views: 1387

Re: Looking for 44V (12s) ebike battery, good for 60A contin

Time to revisit this! Turns out 13s just won't work. So heres another shout out, anyone know of any good 12s ebike batteries? Can you elaborate? No one makes 12s packs. Do you have a 12s charger or a weird controller? Its the controller, I have to make something work with the Vedder controller (VESC...
by The Stig
Sep 06, 2016 2:31 pm
Forum: E-vents
Topic: Interbike 2016, Sept 19-23, Mon-Fri
Replies: 12
Views: 1987

Re: Interbike 2016, Sept 19-23, Mon-Fri

Thanks Lock! I will be attending this year.
by The Stig
May 25, 2016 2:04 pm
Forum: E-Bike Reviews & Testing
Topic: A2B Metro - www.ultramotor.com - Video Page4
Replies: 400
Views: 61089

Re: A2B Metro - www.ultramotor.com - Video Page4

All your numbers seem normal, it just looks like the controller is speed limiting. probably. I remember the stock a2b used to come with a button that would take it from 250w to 500w and higher top speed probably. It was kind of like an "off road mode" switch / button. have you tested the system at 4...
by The Stig
May 20, 2016 5:39 pm
Forum: E-Bike Technical
Topic: Lunacycles Charger - adjustable?
Replies: 33
Views: 2753

Re: Lunacycles Charger - adjustable?

Thanks for the info! Thats interesting to know that most BMSs wont balance below 4.2.

What kind of 12s setuo you got going? Ive been looking for ready made, high power, BMS, packs in 12s
by The Stig
May 04, 2016 5:42 pm
Forum: Items Wanted
Topic: Looking for 44V (12s) ebike battery, good for 60A continuous
Replies: 19
Views: 1387

Re: Looking for 44V (12s) ebike battery, good for 60A contin

Turns out 13s just won't work.

So heres another shout out, anyone know of any good 12s ebike batteries?
by The Stig
Apr 01, 2016 9:30 am
Forum: E-Bike General Discussion
Topic: Good 5s BMS for Li-Ion?
Replies: 1
Views: 139

Good 5s BMS for Li-Ion?

Hi, I'm looking to build a small battery with about 40 Samsung 29E or 32E cells. The peak power is certainly no more than 500w. I'd like a BMS with low current consumption so the battery doesn't drain when stored. There are ebay listings that quote the current consumption but I have no idea how to t...
by The Stig
Mar 29, 2016 7:41 pm
Forum: E-Bike General Discussion
Topic: Good 5s BMS for Li-Ion?
Replies: 1
Views: 139

Good 5s BMS for Li-NMC

Hi, I'm looking to build a small battery with Samsung 29E or 32E cells. The peak power is certainly no more than 500w. I'd like a BMS with low current consumption so the battery doesn't drain when stored. There are ebay listings that quote the current consumption but I don't know how to judge a BMS ...
by The Stig
Mar 25, 2016 10:08 am
Forum: E-Bike Technical
Topic: Lunacycles Charger - adjustable?
Replies: 33
Views: 2753

Re: Lunacycles Charger - adjustable?

Hi, I'm worried my battery voltage may be just a bit high for my controller.

Can anyone confirm if the luna cycle 48v 3A charger (for $35) has an adjustable pot inside?

Will the BMS in their 48V 21Ah high power pack still balance if I charge the battery to 4.15V per cell?
by The Stig
Mar 23, 2016 5:27 pm
Forum: Items for Sale - New
Topic: Vedder VESC Production *Testing 4.10 PCB!*
Replies: 97
Views: 13406

Re: Vedder VESC Production *Testing 4.10 PCB!*

Anyone know if 4.12 will work with a battery that is 13s? Cells are NCM, voltage off the charger should be 54V
by The Stig
Mar 23, 2016 1:13 am
Forum: Items Wanted
Topic: Looking for 44V (12s) ebike battery, good for 60A continuous
Replies: 19
Views: 1387

Re: Looking for 44V (12s) ebike battery, good for 60A contin

Bobysleck, ill have to check the link tomorrow as i am viewing this on my phone now. Safety in a backpack means better casing and more padding. If you hit them hard enough to damage them it won't matter if it's lipo or 18650's. Your still in trouble. One guy one here carries his in a pelican case in...
by The Stig
Mar 22, 2016 2:23 pm
Forum: E-Bike General Discussion
Topic: Battery in backpack vs. mounted to frame
Replies: 39
Views: 3169

Re: Battery in backpack vs. mounted to frame

+1 for backpack battery working pretty well. too bad there's a lot of nay saying / some trolling on the first page of this thread. I know downhill riders that like it. I even like it on the road because taking the weight off the bike makes the bike handling so good. You just need to set it up right:...