Search found 424 matches

by Inwo
Dec 15, 2017 5:23 pm
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 61
Views: 3581

Re: bluetooth BMS?

You can now order 16-32s Bluetooth bms with mosfet and lcd as options. Up to 300 amps.
I have a few 24s 150amp for testing that I never got around to.
Using a 24s 300 amp on my truck. 22s 110ah.
Chinese of course, but works well.
by Inwo
Dec 14, 2017 8:53 pm
Forum: Battery Technology
Topic: Super capacitors to save battery life?
Replies: 44
Views: 816

Re: Super capacitors to save battery life?

FWIW, I'd skip the caps; not enough benefit for the extra volume and weight. I don't use a BMS, I just use a Cycle Analyst (v2.3) to monitor Ah/Wh/Volts to be sure I don't run them down too far, and periodically check cell balance (which so far has not been a problem on the trike's 2p pack. If real...
by Inwo
Dec 12, 2017 9:20 pm
Forum: Battery Technology
Topic: smart BMS - balance charging at partial charges?
Replies: 5
Views: 92

Re: smart BMS - balance charging at partial charges?

Or smart dumb balancers. Work with any chemistry. 2-5 volts. Charges all low cells from all high cells. Up to several amps. Dumb, no setup required. Put one across each cell in any order. Smart, shuts down at 10mv dif. Sunder may be correct. Might kill a small pack. Expensive at $25 per cell. Best f...
by Inwo
Dec 12, 2017 7:22 pm
Forum: Battery Technology
Topic: Super capacitors to save battery life?
Replies: 44
Views: 816

Re: Super capacitors to save battery life?

Completely agree. In a previous batch of lto, were 6p2s 65ah packs built for 10 minute charging in city bus. The terminal were solid copper 1/2" thick and 3 1/2" wide. One of the bars was burned half off on the end by the bolt holes. I wasn't around when that happened. Bet there's a good story behin...
by Inwo
Dec 10, 2017 2:09 pm
Forum: Items for Sale - New
Topic: New Chargery balance charger in production
Replies: 4
Views: 232

Re: New Chargery balance charger in production

Thought there would be more interest in 12s balance charger. Google find many threads on the topic. This is the second of many new Charger products to come. Including 16s chargers. My sample is shipped tomorrow. Hope to have it in a week or so. Meanwhile my LTO building continues. Finding last piece...
by Inwo
Dec 09, 2017 10:00 pm
Forum: Items for Sale - Used
Topic: 18 amp 50.4 volt EMC-1200 charger V/A metered for Chevy Volt
Replies: 6
Views: 523

Re: 18 amp 50.4 volt EMC-1200 charger V/A metered for Chevy Volt

Yes, I just listed the last one on Ebay.
I would still sell it here.
I think this one goes to 58v. That's what is marked on the box. I'd have to check to be sure.
10t pot internally.

https://www.ebay.com/itm/232587433731
by Inwo
Dec 09, 2017 3:25 pm
Forum: Items for Sale - Used
Topic: LTO 24v 60ah 900a pulse altairnano
Replies: 0
Views: 78

LTO 24v 60ah 900a pulse altairnano

$500 each B stock tested and balanced
Custom balance leads available
LTO balance chargers and bms available
li-ti24v.gif
li-ti24v.gif (144.89 KiB) Viewed 78 times
LTO60ah.JPG
LTO60ah.JPG (103.68 KiB) Viewed 78 times
Altairnano 60ah 24v.png
by Inwo
Dec 06, 2017 10:27 pm
Forum: Battery Technology
Topic: Super capacitors to save battery life?
Replies: 44
Views: 816

Re: Super capacitors to save battery life?

Not following the lost capacity in series connected capacitors.
Energy storage is the same. Series or parallel.
Look at each capacitor discretely.
Can be charged to full capacity. 500 Farad @ 2.7v.
by Inwo
Dec 06, 2017 7:15 pm
Forum: General Discussion
Topic: Boost 110v AC to 120v AC or slightly more
Replies: 13
Views: 171

Re: Boost 110v AC to 120v AC or slightly more

Why do the math?
On line calc.
This is with 115 in:
buck boost es.gif
buck boost es.gif (25.22 KiB) Viewed 150 times
by Inwo
Dec 06, 2017 7:05 pm
Forum: General Discussion
Topic: Boost 110v AC to 120v AC or slightly more
Replies: 13
Views: 171

Re: Boost 110v AC to 120v AC or slightly more

Use a "boost" transformer, where ever you need higher voltage. A buck/boost is a transformer with a secondary voltage equal to the amount of boost you need and current required. So a 10v 10a transformer will boost voltage 10v and supply a 10a load. A little more to it than that, but it requires a mu...
by Inwo
Dec 06, 2017 5:29 pm
Forum: Items for Sale - New
Topic: New Chargery balance charger in production
Replies: 4
Views: 232

Re: New Chargery balance charger in production

That one is pre-welder.
I have the aluminum to copper terminals for $2. I buy in bulk.
100a rated.

Foam area is all empty space.

For all your 12v apps. 6s 11ah pouches with 6s lto balance charger and 3 bolt copper clips. 1p to 4p. easy peasy!
by Inwo
Dec 06, 2017 5:27 pm
Forum: Items for Sale - New
Topic: New Chargery balance charger in production
Replies: 4
Views: 232

Re: New Chargery balance charger in production

Chargery claims, that as a preferred distributor, I will get the only one built. :D He is only to write the LTO program before shipping. (that usually introduces bugs) Also getting LTO programmed 6s, 8s, 10s DC balance charger samples. Check out some of barbjb listings for 6s lto modules and kits. I...
by Inwo
Dec 06, 2017 4:05 pm
Forum: Items for Sale - New
Topic: 48v 11ah nos boxes of 12 cells
Replies: 5
Views: 310

Re: 48v 11ah nos $150

I've shipped them USPS. Sorry, I keep forgetting this is an international site. :oops: I believe that flat rate boxes are limited to 20lb, but two boxes would do 22. I have 1000 left and access to 10,000 more. If you wanted a bunch, may be a broker could arrange by sea. Over my pay grade. My brother...
by Inwo
Dec 06, 2017 3:51 pm
Forum: Items for Sale - New
Topic: 48v 11ah nos boxes of 12 cells
Replies: 5
Views: 310

Re: 48v 11ah nos $150

I've shipped them USPS. Sorry, I keep forgetting this is an international site. :oops: I believe that flat rate boxes are limited to 20lb, but two boxes would do 22. I have 1000 left and access to 10,000 more. If you wanted a bunch, may be a broker could arrange by sea. Over my pay grade. My brother...
by Inwo
Dec 05, 2017 10:47 pm
Forum: Battery Technology
Topic: Super capacitors to save battery life?
Replies: 44
Views: 816

Re: Super capacitors to save battery life?

These are old stock lto, but price is right.
Lots of buyers use for super cap replacement.
https://endless-sphere.com/forums/viewt ... 31&t=91735
s-l400-8.jpg
s-l400-8.jpg (44.27 KiB) Viewed 523 times
by Inwo
Dec 05, 2017 6:08 am
Forum: Items for Sale - New
Topic: New Chargery balance charger in production
Replies: 4
Views: 232

Re: New Chargery balance charger in production

C4012B main spec. is as below, 1.                     Input: 100-265Vac 18A max. and 10-30V DC 25A max. 2.                     Battery type: 1-12S lipo, liFe, Lion, Nimh/NiCd, Pb for C4012B 3.                     Charge current: 1-40A for C4012B, 1500W max. at AC input, and 500W max. at DC input. 4....
by Inwo
Dec 05, 2017 6:04 am
Forum: Items for Sale - New
Topic: New Chargery balance charger in production
Replies: 4
Views: 232

New Chargery balance charger in production

C4012B

Ac balance charger.
12s
40 amps

Should have a sample next week or two.

When I get specs and msrp, I will take preorders. As I did with bms24 and C10325 .
by Inwo
Dec 05, 2017 6:02 am
Forum: Items for Sale - New
Topic: New Chargery balance charger in production
Replies: 0
Views: 82

New Chargery balance charger in production

C4012B

Ac balance charger.
12s
40 amps

Should have a sample next week or two.

When I get specs and msrp, I will take preorders. As I did with bms24 and C10325 .
by Inwo
Dec 02, 2017 12:21 pm
Forum: Battery Technology
Topic: Ultrasonic tab welding
Replies: 24
Views: 684

Re: Ultrasonic tab welding

Yes, it rips the tabs. Tested on some oxidized wrinkled junk batteries.
We find if the pattern is burned thru to opposite side, weld is good.
Also that more pressure and less time works best for our application.
Steep learning curve with little advice from manufacturer.
by Inwo
Dec 01, 2017 7:16 pm
Forum: Battery Technology
Topic: Ultrasonic tab welding
Replies: 24
Views: 684

Re: Ultrasonic tab welding

Steve was down today to help dial in.

Two man job so I added some Rube Goldberg automation.

See if I can link video.
https://youtu.be/4ECL24WzP1w

Getting good welds with 200psi, 1sec, and 85% amplitude. 800 watt "handheld" welder.
by Inwo
Dec 01, 2017 1:09 am
Forum: Items for Sale - New
Topic: 48v 11ah nos boxes of 12 cells
Replies: 5
Views: 310

48v 11ah nos boxes of 12 cells

12 lto pouches Altairnano by Kokam
New in factory box.
Conus shipping $50
s-l1600-7.jpg
(178.16 KiB) Not downloaded yet
by Inwo
Nov 29, 2017 3:37 pm
Forum: Battery Technology
Topic: Ultrasonic tab welding
Replies: 24
Views: 684

Re: Ultrasonic tab welding

This would be a job for Big Blue Saw!
All day on my drill press, milling.
by Inwo
Nov 29, 2017 3:34 pm
Forum: Battery Technology
Topic: Ultrasonic tab welding
Replies: 24
Views: 684

Re: Ultrasonic tab welding

Steep learning curve. Handheld make it difficult to get consistent welds. Yesterday I put together a jig to hold alignment. Testing anvils today. Seems a harder anvil ie. stainless steel works better. 1 sec down from 3 sec. More down pressure is welding with little sticking. 20-50lb unmeasured as of...