Search found 148 matches

by zeccato
May 06 2020 12:33pm
Forum: E-Bike Technical
Topic: XPD: open-source keywin e-bike lab replacement
Replies: 607
Views: 163124

Re: XPD: open-source keywin e-bike lab replacement

I installed xpd, that is the 3 programs (as specified) and it worked well Would you mind telling us the ( current ) version used, and source for the installation, to amend your post? I followed the instructions ? this post ? , I don't remember well and I didn't fully understand what you're looking ...
by zeccato
May 01 2020 9:22am
Forum: E-Bike Technical
Topic: XPD: open-source keywin e-bike lab replacement
Replies: 607
Views: 163124

Re: XPD: open-source keywin e-bike lab replacement

Thanks for your contribution, today I installed xpd, that is the 3 programs (as specified) and it worked well with window 10. I put the defaut on the 2, 100%, and the 3 position switch on the 2. my 2018 cable usb already had the bridge, (EB3 12 FET cellman). I've made some adjustments, nothing else...
by zeccato
Apr 14 2020 9:05am
Forum: E-Bike General Discussion
Topic: Why are geared motors worse than direct drive for climbing hills?
Replies: 32
Views: 1519

Re: Why are geared motors worse than direct drive for climbing hills?

Yes, Mac8T, I certainly don't have miles of climbs, but with 2000W (peak) it goes over 35km/h, I have fun, I had to lower the amps, it was too powerful.
by zeccato
Apr 14 2020 12:24am
Forum: Battery Technology
Topic: Li-ion cells cycle ageing
Replies: 441
Views: 46976

Re: Li-ion cells cycle ageing

is that right, do you think? is it the same with the usual e-bike batteries? (car) Lithium-ion battery degradation over time Temperature 40% charge 100% charge 0 °C (32 °F) 40% charge: 2% loss after 1 year 100% charge: 6% loss after 1 year 25 °C (77 °F) 40% charge: 4% loss after 1 year 100% charge:...
by zeccato
Apr 14 2020 12:12am
Forum: E-Bike General Discussion
Topic: Why are geared motors worse than direct drive for climbing hills?
Replies: 32
Views: 1519

Re: Why are geared motors worse than direct drive for climbing hills?

Good answers already. Logic. To make it practical. If you need to climb steep and fast, the DD hub is a must. Steep and slow, you are better with a mid drive. Geared motors really don’t like being overloaded. No steep climbing for them. But, when you don’t need to climb steep and can help with some...
by zeccato
Apr 11 2020 7:31am
Forum: E-Bike General Discussion
Topic: Tell me about MAC 3 speed and cruise button
Replies: 11
Views: 307

Re: Tell me about MAC 3 speed and cruise button

I get along well even on steep roads, depending on how fast you speed up, and how you use and program the 3 buttons. with cruiser all right. Then about the 30ah, decreasing the continuous Ah you have less power, or using the software firmware xpd you can lower the 30Ah peak (phase). I have 8T on whe...
by zeccato
Apr 07 2020 9:26am
Forum: E-Bike General Discussion
Topic: a speed electric bike, looking something with a big battery
Replies: 15
Views: 402

Re: a speed electric bike, looking something with a big battery

Not always a fast bike costs a lot (I'm light), with a full folding (2011), and from 2012 45-50km/h, also battery (from 2012) 14kg.

(I had to learn and do things myself).
by zeccato
Apr 06 2020 3:07pm
Forum: E-Bike General Discussion
Topic: a speed electric bike, looking something with a big battery
Replies: 15
Views: 402

Re: a speed electric bike, looking something with a big battery

I quote the recommended calculations above.

I have 1500W battery and I do maximum 60km, you have to calculate even a 20% unused (1500W= 1300W).

I recommend placing the battery under the center forward.
by zeccato
Mar 28 2020 3:40am
Forum: Battery Technology
Topic: 48v 13s4p 18650 showing 0v for 12th cell group
Replies: 5
Views: 460

Re: 48v 13s4p 18650 showing 0v for 12th cell group

I'd load the 12 individually a few seconds or minutes to see what it does.
if that's all you got, maybe a 5v mobile phone charger. Careful not to exceed 4.2v.
So you can see that the bms isn't faulty.
load in a safe place to avoid fire.
by zeccato
Mar 26 2020 2:50am
Forum: E-Bike Non-hub Motor Drives
Topic: Power issue and crackling noise
Replies: 16
Views: 738

Re: Power issue and crackling noise

Thanks for the advice. Maybe next time reduce the levels of sarcasm. Not all people find that acceptable. Helping minus the sarcasm would be great and be a much more positive step towards people's communication with you. I have found better help on this subject from other forums with more professio...
by zeccato
Mar 25 2020 9:39am
Forum: General Discussion
Topic: If I don't log in, some topics don't show up, why?
Replies: 10
Views: 474

Re: If I don't log in, some topics don't show up, why?

spinningmagnets wrote:
Mar 25 2020 9:10am
Some sections and topics are only available to read for members who are signed-in.
thank you, out of curiosity: has this been changed recently?
by zeccato
Mar 22 2020 1:17pm
Forum: Battery Technology
Topic: Help me troubleshoot this pack please. How are these voltages?
Replies: 59
Views: 1737

Re: Help me troubleshoot this pack please. How are these voltages?

eikido wrote:
Mar 22 2020 3:25am
I think that after 3 or 4 unloaded charges it will normalize, if charged up to at least 4v is fine, the difference is minimal.
In my opinion, I wouldn't do anything,
just sometimes the balance.
You use it for ebike?
by zeccato
Mar 22 2020 11:32am
Forum: Battery Technology
Topic: Help me troubleshoot this pack please. How are these voltages?
Replies: 59
Views: 1737

Re: Help me troubleshoot this pack please. How are these voltages?

eikido wrote:
Mar 22 2020 3:25am
Does the battery do less miles (km) than before?
by zeccato
Mar 21 2020 4:01pm
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 1309
Views: 139920

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

Interesting, but what about me?😋
How is the FW (120% for 55km/h) with 6f, on Mac T8, in wheel 22, 16s Lfp?
(Battery is ok, me and the bike are light, now 45km/h).
Efficient enough?
No problem for the hub?
by zeccato
Mar 21 2020 1:57am
Forum: E-Bike Technical
Topic: Will higher amp controller help?
Replies: 31
Views: 1504

Re: Will higher amp controller help?

Fine, I've found that lfp resist abuse well,
More tests video etc.:
https://electrotransport.ru/ussr/index. ... 0350.0;all
by zeccato
Mar 20 2020 10:15am
Forum: Battery Technology
Topic: Help me troubleshoot this pack please. How are these voltages?
Replies: 59
Views: 1737

Re: Help me troubleshoot this pack please. How are these voltages?

I'd measure all the 13s while he's charging, to see the highest, or how far they go...
by zeccato
Mar 19 2020 1:40am
Forum: E-Bike Technical
Topic: Will higher amp controller help?
Replies: 31
Views: 1504

Re: Will higher amp controller help?

In my opinion: you should double or triple the parallel, then either fatten the shunt, or better yet buy a programmable controller (24-72v. 40ah).
by zeccato
Mar 18 2020 9:24am
Forum: Battery Technology
Topic: Test a battery pack. How can i easily create a high amp load?
Replies: 15
Views: 1108

Re: Test a battery pack. How can i easily create a high amp load?

If you have a balancer charger, while you load one you unload the other, (checking imput).
by zeccato
Mar 17 2020 7:45am
Forum: E-Bike Technical
Topic: XPD: open-source keywin e-bike lab replacement
Replies: 607
Views: 163124

Re: XPD: open-source keywin e-bike lab replacement

Thanks for your contribution, today I installed xpd, that is the 3 programs (as specified) and it worked well with window 10. I put the defaut on the 2, 100%, and the 3 position switch on the 2. my 2018 cable usb already had the bridge, (EB3 12 FET cellman). I've made some adjustments, nothing else....
by zeccato
Mar 15 2020 9:59am
Forum: Battery Technology
Topic: LIFEPo4 cells, 21700 3000mah, recommendations?
Replies: 7
Views: 452

Re: LIFEPo4 cells, 21700 3000mah, recommendations?

thanks for the clarification, I'll think about it, for now I'm not buying anything, because I'm undecided on the best choice to make.
by zeccato
Mar 15 2020 9:04am
Forum: Battery Technology
Topic: LIFEPo4 cells, 21700 3000mah, recommendations?
Replies: 7
Views: 452

Re: LIFEPo4 cells, 21700 3000mah, recommendations?

The problem is, you are accepting numbers from marketing materials that are likely bogus. Reducing weight with **quality** cells - I assume longevity is important to you? means reducing either voltage or Ah range, if you stick to LFP. Otherwise go to the much higher density LI chemistries like NCA ...
by zeccato
Mar 15 2020 1:56am
Forum: Battery Technology
Topic: LIFEPo4 cells, 21700 3000mah, recommendations?
Replies: 7
Views: 452

Re: LIFEPo4 cells, 21700 3000mah, recommendations?

Tanks, I calculated that the 18650 1800mah to make 27ah have about the same weight. So the 3000mah are no longer light. p.s I have A123 26650 2500mah 16s 3p for the city, but for a big 27ah package I would like something lighter. To do about 27ah: 144 cells 21700 3000mah 68g) = 9792kg, 176 cells 266...
by zeccato
Mar 14 2020 3:38am
Forum: Battery Technology
Topic: LIFEPo4 cells, 21700 3000mah, recommendations?
Replies: 7
Views: 452

LIFEPo4 cells, 21700 3000mah, recommendations?

I'm looking at these cells: https://m.made-in-china.com/company-lithiumionbattery/ LIFEPo4 cells 21700 3000mah (68g.), to make a package from 48v 27Ah, and that would be about 10 kg. to go lighter than the bigger (26650 85g.). (cells of 18650 with 2,500-3000mah I can't find LIFEPo4). recommendations...