Search found 83 matches

by SamRich
Jan 31, 2018 2:47 pm
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

Nice BMS you have there, to a very decent price... have you made some road test yet and see the BMS behavior live. Did you find a way to completely shut off the BMS to avoid draining the batteries when you will not use your eBike... Thanks I have not road tested the unit yet. there is an on/off swi...
by SamRich
Jan 17, 2018 5:04 pm
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

I think the LTO's will be more robust which is why I want to experiment with them. Yup experimenting is the most fun part of this! :) There are a lot of "nay sayer" about LTO not being useful for ebikes, but I think there are niche applications. I'm looking forward to seeing how it works out in the...
by SamRich
Jan 17, 2018 12:25 pm
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

Hopefully the price will come down a bit - that's why INWO's 11Ah @$9 LTO deal was too cheap not to give it a try. I have spoken with INWO before and he also messaged me about them, it is a good deal. It would result in a 22AH instead of 20AH for the voltage I need, the extra 2AH adds 5 more pounds...
by SamRich
Jan 17, 2018 12:17 pm
Forum: Battery Technology
Topic: Super capacitors to save battery life?
Replies: 45
Views: 1514

Re: Super capacitors to save battery life?

Hi Iwik, Searched for this thread after you commented my LTO build. It's a very interesting thread to me since not many do touring on ebikes and the trade offs are different than for a trail and commuting bike. I used to do a bunch of touring (before the kiddo) and I have thought of how I would mayb...
by SamRich
Jan 17, 2018 8:27 am
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

Hopefully the price will come down a bit - that's why INWO's 11Ah @$9 LTO deal was too cheap not to give it a try. One my cross country bike trip one of my Li-Ion batteries BMS shut the battery down at 42.5v as I crossed the Texas state line. By the time I hit Florida at the end of my trip the BMS ...
by SamRich
Jan 16, 2018 3:51 pm
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

Inwo wrote:
Jan 14, 2018 2:02 pm
Tell me about it.............................

MVC-002F.JPGMVC-001F.JPG
yup
by SamRich
Jan 16, 2018 3:50 pm
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

Idea: What about a small LTO powerwall connected to a 110v wall plug. Charges the LTO pack slowly over time. When you need a faster charge, transfer the stored energy to your battery pack. Making a level 1 charge station behave more like a level 2 charge station (once every X hours for LTO recharge...
by SamRich
Jan 16, 2018 3:45 pm
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

Sam, you have my full attention with your LTO build. About a month ago I started a thread on using Supercaps to help save my Li-ion because they were doing to quick. But the end of that thread I was sold on LTO batteries. I have spoken with Inwo a little on the subject and see he has posted here to...
by SamRich
Jan 14, 2018 8:39 am
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

Received Bluetooth programmable BMS ordered from Aliexpress. https://www.aliexpress.com/item/Smart-Display-16-32S-Cells-300A-200A-150A-100A-70A-Lithium-Battery-Protection-Board-Balance-BMS/32826469363.html?spm=a2g0s.9042311.0.0.ZngtSW I ordered the 100Amp model, can do 16-32S for any chemistry inclu...
by SamRich
Jan 14, 2018 8:16 am
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

Update on balancing LTO. I wired up and tested the 2.7V Cap balancing boards. https://lh3.googleusercontent.com/dN7LLhgUHuZwecwfGFZA3p5qTq6IvaTVz-UNb1VIpbO90gK7YhuiUpold4VlRcmzhCDWbBmBfdb8cVf54jghVPyZt4lEFK7ar1Y_B3cqCOOki7hG492haMFzCa9CAfSAzF8J7MpOtxJGQc00FhEtrqakiv93vAqqeJPogqibU3RJhT3mYG_9hmbWJ7b4...
by SamRich
Dec 23, 2017 10:54 am
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

Check out aliexpess there's a few sellers on there. Thanks. I did look before, but only found the huge 20ah mothers that weight 650g each. This time I found some 12Ah at 340g . Like I said above. Aliexpress search engine sucks. I use Google search: "Lto cells 12ah site: aliexpress.com" https://www....
by SamRich
Dec 23, 2017 12:03 am
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

Try this : https://m.ebay.com/itm/Lithium-Titanate-LTO-Kokam-Altairnano-11ah-Battery-cell-6-pcs-for-12v/152810698842?hash=item23943a385a:g:-HwAAOSwH3hZ9fjR Thanks. That finds the right thing, but... "May not ship to United Kingdom" ... "Ships to:United States" and "The seller has not specified a sh...
by SamRich
Dec 22, 2017 11:21 pm
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

Look for barbjb on eBay. Okay. That turns up 3 items: 100Ah gbs lithium batteries; Golf cart; parallel harness for Volt. I'm coming into ebay.co.uk; could that be the problem? Try this : https://m.ebay.com/itm/Lithium-Titanate-LTO-Kokam-Altairnano-11ah-Battery-cell-6-pcs-for-12v/152810698842?hash=i...
by SamRich
Dec 22, 2017 9:58 pm
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

I have a link above on where i bought my cells on Ebay (member INWO), I don't know of any pre-built packs. I've been up and down the thread and didn't find an ebay link? Also did an ebay advanced search for anything by seller "INWO" and it says he doesn't exist? Sorry, Rereading that i see how that...
by SamRich
Dec 22, 2017 4:26 pm
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

This has sparked my interest in LTO cells. I was not previously aware of these. Just finished some hours of researching them. I am interested in using LTOs in my current project bike. My alternative option is a 24s LiPo battery pack. Could someone point me in the right direction to build/purchase a...
by SamRich
Dec 22, 2017 8:45 am
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

However, the BMS has no balancing function (could not find any that did) There are smart lto bms with balancing. Bluetooth and lcd display. Up to 32s 300 amp. I use the 24s version, and have a few extra. A 32s is on the way for testing. Also, Chargery new products. 50010b is updated for lto. Need t...
by SamRich
Dec 21, 2017 7:08 am
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

Test fit of battery in the box...it's tight. Luckily I can assemble the box around the battery. I don't think it would slide in and out easily. The BMS is also a very tight fit! Barely fits between the U channel...I knew it was going to be tight...but the U channel come in a bit inside so the clear...
by SamRich
Dec 20, 2017 8:04 pm
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

Progress Update: Added Power and Charging wires: https://lh3.googleusercontent.com/xuK9voNUpDjASrekuZ-4TeLlAY3vJDXuRKR6rrBEqmNiu6Ml9BNkJ2fvWTiEbAVJGrFyUIMq6aqJF2MttR5nLdowlzPmNpL3uNlCHU-hW0hwcr2msBg9sUHGEh0tQ4diYDnfxzO6vT3ROzPSMZwTLp0EqiKQip80SjiHcrdKrom7CbxEiWVXMtvl4uKE0zK95qrblGuvsP_x8NeBenNKwOqxl...
by SamRich
Dec 20, 2017 5:05 pm
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

I would say if you feel confident that you will keep your bike much like it is today power wise, not get sucked into the more power craving madness your analysis is spot on and you found yourself a good battery pack using the LTO. Haha love the Rant :) I agree - it might be hard. I've already gone ...
by SamRich
Dec 20, 2017 9:02 am
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

There are a few people here in ES with more then 1200 cycle on Lipo batteries. From memory they build there battery pack with much more capacity then actually needed. And was careful charging and draining cells. If you stay away from hard usage, and dont have prolonged WOT sessions that pulls A clo...
by SamRich
Dec 19, 2017 11:42 am
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

Offroader wrote:
Dec 19, 2017 11:35 am
For those who are interested watch these videos made by Toshiba when they punctured, overcharged cells, and crushed them.

http://www.scib.jp/en/about/index.htm#con1
That's insane!

Where/how did you buy these? Expensive?
by SamRich
Dec 19, 2017 11:41 am
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

I use LTO 20 amp hour Toshiba SCIB cells in my Honda hybrid car to replace the NiMH batteries. These things are really good. From my testing they really don't need to be balanced. They stay perfectly balanced to .001 volts and I didn't bother with a BMS. You are not using the Toshiba cells so they ...
by SamRich
Dec 19, 2017 8:36 am
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

I shared this elsewhere on ES but I'll include it here as well for completeness. Had to modify my frame to fit the battery box: Gasp! https://lh3.googleusercontent.com/gb7ALXEsC6om6QIiYIeeDGfRz_RkMoNFvkvpRINWGl1-EBRelhV9TvqeRBjSENqoxDl89y6a31FCvk882ofLNh2XZ-pNCJFZLoXsAyC3cBDu53BFZJdyNgX3cwRHMVX31Z5t...
by SamRich
Dec 19, 2017 8:31 am
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

Test fit of battery in the box...it's tight. Luckily I can assemble the box around the battery. I don't think it would slide in and out easily. https://lh3.googleusercontent.com/MwG1tOY1Khd-3EcNFmKp2aLrhQWmMERYAyNDlYlEsvwPobS4Yw9qnXeaVnMFsClVLQ3GxKIn5cuyTObxAxxcueDQQXJZ0jDkweVxHR520YnEMGdFt6unuNJ_fK...
by SamRich
Dec 18, 2017 8:34 pm
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 72
Views: 2600

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

I have built a 11S LTO battery, but for stationary use only. I have a BMS protected LiFePo4 solar storage battery. It holds a huge amount of energy, but in winter, its power deliver capability can leave something to be desired so I have a 30AH LTO pack which can deliver 300A. Beautiful battery, fit...