Search found 91 matches

by alec
Dec 06 2017 4:28pm
Forum: E-Bike Technical
Topic: 96VDC -> 12VDC buck converter
Replies: 2
Views: 473

Re: 96VDC -> 12VDC buck converter

teklektik wrote:
Dec 06 2017 3:42pm
There's mention of a specific Toshiba ADP-60RH laptop supply in "How To Wire a 12V Brake Light and Turn Signals". Works nice.

At your high voltage, almost any one should work - the problem is usually getting them to start at low voltages (~45V) when they were designed for 110V.
Nice, thanks!
by alec
Dec 06 2017 4:27pm
Forum: Battery Technology
Topic: So confused, please help (24s 99.6V battery charging/safety)
Replies: 20
Views: 1504

Re: So confused, please help (24s 99.6V battery charging/safety)

I would put four 6s sense wires for EZ hookup of cell meters or a 6s thru the sense wire charger like a bc168 or ? Get used to checking with the cell monitors and not using more than 15 16 amp your hours as you'll find out in time. Are they 20ah cells ? What controller and motor combo will be using...
by alec
Dec 06 2017 2:44pm
Forum: E-Bike Reviews & Testing
Topic: Sabvoton MQCON review and documents
Replies: 34
Views: 12850

Re: Sabvoton MQCON review and documents

Bumping this thread. I'm about to switch my Greentime to a MQCON. It's all ready to go, just looking to get the software prepared...
by alec
Dec 06 2017 2:25pm
Forum: E-Bike Technical
Topic: 96VDC -> 12VDC buck converter
Replies: 2
Views: 473

96VDC -> 12VDC buck converter

https://www.amazon.com/VOLTAGE-REDUCER-CONVERTER-45V-120V-20Amax/dp/B01CXN00TM/ref=sr_1_1?s=electronics&ie=UTF8&qid=1512587925&sr=1-1&keywords=96v+to+12v Does anybody have experience with this buck converter? Looking to install turn signals, headlights, taillights, etc. on my Greyborg and everything...
by alec
Dec 06 2017 11:50am
Forum: Battery Technology
Topic: So confused, please help (24s 99.6V battery charging/safety)
Replies: 20
Views: 1504

Re: So confused, please help (24s 99.6V battery charging/safety)

Thanks for all your answers, everyone. Very appreciative of this forum and all of you.

I've decided to be a human BMS instead of going the 24S BMS route. The existing BMS's that would fit my application just seem so dodgy.
by alec
Dec 05 2017 7:58pm
Forum: Battery Technology
Topic: So confused, please help (24s 99.6V battery charging/safety)
Replies: 20
Views: 1504

So confused, please help (24s 99.6V battery charging/safety)

Hey everybody, I currently have an ebike with two battery packs running in series. One 16S and another 8S, for a total of 24S. The cells are 4.15V EIG 20Ah. There is no BMS installed on these packs. Every four cells has a 4-pin JST connector for balancing purposes. Previous owner of the bike would b...
by alec
Dec 05 2017 4:41pm
Forum: Items Wanted
Topic: 24S 99.6V 100A+ BMS
Replies: 0
Views: 396

24S 99.6V 100A+ BMS

If you have a BMS that'll work with my 99.6V 20Ah 24S battery pack, hit me up!

Bluetooth would be awesome, too.
by alec
Dec 05 2017 1:45pm
Forum: E-Bike Technical
Topic: 14s bms help
Replies: 12
Views: 1156

Re: 14s bms help

In my opinion, BMS's are useless. I'd manually read voltage of each cell and discharge/charge as needed to balance. Have you shared this advice with Tesla, Nissan, Chevy, Zero, Bosch, every laptop manufacturer, every cell phone manufacturer, etc.? If not, why are you withholding this wisdom from th...
by alec
Dec 04 2017 7:09pm
Forum: E-Bike General Discussion
Topic: CroBorg Super Commuter
Replies: 1029
Views: 120038

Re: CroBorg Super Commuter

That would be fun alec, I haven't been riding mine much since my commuting ended a couple years ago. Glad this has been useful. I still want to finish some projects on it but haven't found the time. The batteries are probably going to go bad due to dis-use. It's a great machine, if a bit on the hea...
by alec
Dec 04 2017 7:02pm
Forum: E-Bike Technical
Topic: 14s bms help
Replies: 12
Views: 1156

Re: 14s bms help

In my opinion, BMS's are useless. I'd manually read voltage of each cell and discharge/charge as needed to balance.
by alec
Dec 04 2017 6:33pm
Forum: Items for Sale - Used
Topic: 21kWh / 251 EIG cells in ~3kWh banks
Replies: 24
Views: 4270

Re: 21kWh / 251 EIG cells in ~3kWh banks

Bump. This is an amazing deal that nobody seems to be jumping on.
by alec
Dec 04 2017 5:21pm
Forum: E-Bike General Discussion
Topic: CroBorg Super Commuter
Replies: 1029
Views: 120038

Re: CroBorg Super Commuter

I'm bumping this thread because I just got a CroBorg and the amount of information here from Alan's build is beyond useful for me.

We should meet up sometime, Alan! I'm in Fresno but frequent the Bay Area.
by alec
Dec 04 2017 5:03pm
Forum: Items for Sale - Used
Topic: CroBike in Bay Area, 120A+, 99.6V 20 Ah, neck breaker
Replies: 6
Views: 1638

Re: CroBike in Bay Area, 120A+, 99.6V 20 Ah, neck breaker

tigcross wrote:
Dec 04 2017 4:17pm
wicked deal. nice score
Rode it to work today and it was a total blast. Currently buying some pretty nice discharging devices to make sure I keep these rare EIG cells in top notch condition.
by alec
Dec 01 2017 6:40pm
Forum: Items for Sale - Used
Topic: Mega Battery! 20s28p (72V, 95Ah) = 6840Wh!
Replies: 4
Views: 1907

Re: Mega Battery! 20s28p (72V, 95Ah) = 6840Wh!

I want that battery so, so badly. Assuming you can't ship to the USA due to legal reasons?