Bulky as is for an ebike though. In my case the application is a traction pack for a non-pedal scooter, and the frame is more robust and conducive to these cells/modules physical properties.
for folks wanting really high discharge and charge rates.
As far as separating the linked BH SCIB module up into individual cells for custom pack size... that might be tricky to do well.
Alternatively you might be able to get some LTO pouch cells and create something with a bit better form factor for an Ebike. Someone did a LTO pack on a Mt. frame a few years ago here with pouch LTO cells.
The build and review is here...
I want to come to conclusions so I can act. Acting would mean buying pieces, or asking more questions.
I'll start with questions I can think of now. The problem is all the answers others already know, and thus don't mention, and which I don't know exist, so can't fill in the blanks about, or ask about. That is, tell me things you think I might already know. Terse responses aren't helpful because I can't interpret them - I don't have the background, or don't know that I have enough background. Thanks in advance for the extra effort. I did digital electronics for satellites 50 years ago, and lack recent knowledge or knowledge of power electronics or batteries.
Background: I'm retired now. I have modest capital. I'm designing my solution to also provide my power needs independent of wall power - I might take off around Australia on my trike while I'm still able to. Part of this is lowering my power needs, part of this is reliability. I have some good, lightweight solar panels, and some of Grin's kit for solar charging, as well as Grin's Satiator, Phaserunner v6 & Baserunner (currently installed), Cycle Analyst v3, All-Axle V3 rear.
The application is the 3d machine in my sig below - a full-size Greenspeed Magnum Big Wheel trike. Not an upright bicycle. From the evolution in the sig, you can see that I started with uprights, but my deteriorating back has forced me into using a trike. At the same time, I'm retired and need to be frugal, so I won't be designing a dedicated, custom machine - I'm working with the Greenspeed. Although the pictures are not up to date, the motor is where it's shown - behind the seat. This is working well now.
The current battery pack is on the spine over the cross-members between my legs. There is room for another battery or even batteries in several places. Among other further customisations, I am considering making a custom rack that integrates with the motor mounting frame to provide better load carrying, support for overhead solar panels, and a trailer attachment point. Two of these SCiB batteries should be easy to mount in their current form.
For both the LFP and LTO cells:
- Can I charge them with my current kit?
- Can I buy the BMS, or is this an unknown that I must investigate, educate myself about, and perhaps even design?
- What have I not mentioned that I need to add, source, design, etc.? Apart from what I've written here, I may not know about what else I need.
I would rather buy now than wait for something "better" next year, as the world is getting quite shaky and I have no further need to be cool. I want to live my life without hassles. I am partial to the titanite cells, as they are likely to work for my remaining lifespan (or at least riding span), so if I solve the problem now, it's solved for good.
Two of those SCiB assemblies would probably give me everything I need if they can actually be used for this, and the price is in the range of a replacement "regular" Li-ion battery for my trike. But they come from the USA, and reference that "shaky" bit above - as long as they will actually do the job.
I mean I want to choose something that will work, and any other bits it needs, and get it now.
My new landlord is already quite nervous about me having a Li-ion battery on the property. It does not matter that it's ok, it matters that I be able to prove that the battery I use can't burn. The titanite battery partly came from my thread about a solar-only system - the longevity is the attraction. But I read it's also inherently safe - it can't burn (no thermal run away).
But if LFP is better, tell me, and tell me why, please, so I can make real choices. Thanks.
