Search found 651 matches

by ejonesss
Sep 04 2017 11:01am
Forum: Battery Technology
Topic: diode ratings
Replies: 0
Views: 294

diode ratings

i see on ebay a 3 phase rectifier diode block that is rated 50 amp at 1000 volt i was wondering if diodes are like other electrical where their rating is because of their typical application for example you may have wire rated for 10 amp at 600 volt but if you are using lower voltage like say 12 cou...
by ejonesss
Jul 25 2017 2:44pm
Forum: Battery Technology
Topic: charging chevy volt/spark batteries.
Replies: 14
Views: 1398

Re: charging chevy volt/spark batteries.

the hobby charger is set to charge at 40 amp charges in a couple hours.

is that safe?


also where do i get 12s 6A chargers at?
by ejonesss
Jul 22 2017 10:53am
Forum: Items for Sale - New
Topic: Genesis V2100 - Assault & Battery
Replies: 132
Views: 32459

Re: Genesis V2100 - Assault & Battery - Illegal in all 50 St

you say illegal how would the police even know if you are using it above the legal power?

i doubt that the police is trained on dyno'ing ebikes if they can dyno anything at all.
by ejonesss
Jul 22 2017 10:47am
Forum: Items for Sale - New
Topic: Bluetooth bms in usa if you need fast
Replies: 1
Views: 422

Re: Bluetooth bms in usa if you need fast

Inwo wrote: Picture to big, I'll add later.
if you mean by too big in that it refuses to upload as it exceeds the board limits there is always tinypic or your isp's provided space or if your isp allows servers on residential account you can host from your own connection.
by ejonesss
Jul 21 2017 9:44am
Forum: Battery Technology
Topic: charging chevy volt/spark batteries.
Replies: 14
Views: 1398

Re: charging chevy volt/spark batteries.

modern hobby chargers are smart enough to detect a battery connected. i think it may be that the internal resistance of the individual cells or s is lower than that of a normal lipo cell so maybe individually it cant do much but when you add up the cells there is enough resistance to make the chargi...
by ejonesss
Jul 20 2017 3:43pm
Forum: Battery Technology
Topic: charging chevy volt/spark batteries.
Replies: 14
Views: 1398

Re: charging chevy volt/spark batteries.

the problem is then it will charge beyond the 4.2 volts.
by ejonesss
Jul 20 2017 11:11am
Forum: Battery Technology
Topic: charging chevy volt/spark batteries.
Replies: 14
Views: 1398

Re: charging chevy volt/spark batteries.

As far as I know, the Volt batteries are Li-ion, so charge to 4.2v per cell. what i find odd is why if i charge each cell as 1s at a time the charger does not taper down the charge and stop once it reaches 4.2 volts. i suspect maybe the volt cells are so proprietary that they use a custom chemistry...
by ejonesss
Jul 19 2017 5:11pm
Forum: Battery Technology
Topic: charging chevy volt/spark batteries.
Replies: 14
Views: 1398

Re: charging chevy volt/spark batteries.

another thing


you do realize that a chevy volt/spark battery module is 40 to 50 amp our rated and charging a 50 amp hour battery with a $10 charger that is probably no more that 3 amps will take 16 hours or more to charge?

that is why i was asking about the chemistry.
by ejonesss
Jul 19 2017 8:10am
Forum: Battery Technology
Topic: charging chevy volt/spark batteries.
Replies: 14
Views: 1398

Re: charging chevy volt/spark batteries.

Hillhater wrote:48v chargers dont have to cost $250.
you can get one for as little a $10 !

does the $10 charger have balance connections and able to charge at 1000+ watts and be able to charge variable amount of cells and have a display like hobby chargers do?
by ejonesss
Jul 18 2017 5:31pm
Forum: Battery Technology
Topic: charging chevy volt/spark batteries.
Replies: 14
Views: 1398

charging chevy volt/spark batteries.

i got a chevy volt/spark battery module 12s 48 volt. if i charge it at 2 separate batteries 8s and then 4 s each time the hobby charger (unfortunately hobbyking is not responding properly). it cuts off ok but when i then go back to charge the cells 1 at a time to get them balanced the cells wants to...
by ejonesss
Jul 16 2017 12:56pm
Forum: General Discussion
Topic: fat bike fork on non fat bike
Replies: 2
Views: 361

fat bike fork on non fat bike

i was wondering if the fork for a fat bike would fit a non fat bike. is the head bar on the fork the same diameter for both fat and non fat bikes? i am thinking that a non fat rear hub then would fit the front on a fat bike. you may ask why would anyone want to put a rear wheel on a front fork? simp...
by ejonesss
Jul 10 2017 3:47pm
Forum: Battery Technology
Topic: Cheap RC chargers in series
Replies: 6
Views: 830

Re: Cheap RC chargers in series

i have the turnigy mega 800 dual and i was wondering if it is safe to wire like http://i63.tinypic.com/n3b441.jpg i mean by safe if there is isolation in the charger such that i wont blow the charger or cause sparks connecting the battery. i have a chevy volt 12s battery and unfortunately the only c...
by ejonesss
Jun 11 2017 5:32pm
Forum: Items for Sale - New
Topic: New BMS model
Replies: 72
Views: 10124

Re: New BMS model

when and where can we get one it looks very good product?
by ejonesss
Jun 05 2017 2:01pm
Forum: General Discussion
Topic: roadie.com as means ship difficult items
Replies: 0
Views: 274

roadie.com as means ship difficult items

note to mods i dont know the right place for this post so you can move to the right place i saw roadie mentioned on tv i think it was a sponsor of a show or something and i was wondering if they could be used to ship items too difficult to ship like large batteries. for example recently a user on th...
by ejonesss
Mar 15 2017 11:46am
Forum: EV Business World
Topic: please vote to rollback hazmat rules
Replies: 4
Views: 946

Re: please vote to rollback hazmat rules

cost it costs for example more to send a tesla module made of 444 18650 cells because of the hazmat rules for ground shipping than to send it normal ground shipping. i think if the rules was rolled back to abolish the requirement that you need to pay for hazmat training just to pack a battery into a...
by ejonesss
Mar 14 2017 1:03pm
Forum: EV Business World
Topic: please vote to rollback hazmat rules
Replies: 4
Views: 946

Re: please vote to rollback hazmat rules

i dont know if you read this correctly it is NOT a saying that they are rolling back but a suggestion for everyone to talk to their state representative to push a bill to get the rules rolled back.
by ejonesss
Mar 13 2017 4:11pm
Forum: EV Business World
Topic: please vote to rollback hazmat rules
Replies: 4
Views: 946

please vote to rollback hazmat rules

now that donald trump is president for probably the next 8 years if everyone talk to their state representatives and ask to push a bill in congress to roll back the hazmat rules for shipping batteries and make it international. while we still need rules saying to prevent shipping batteries on passen...
by ejonesss
Mar 08 2017 3:55pm
Forum: Forum Rules and Features
Topic: Uploaded videos are being removed from the forum in 30 days!
Replies: 7
Views: 4768

Re: Uploaded videos are being removed from the forum in 30 d

have you thought of hosting the site from your home connection? then use cloudflare to protect your ip addresses from your isp's no servers on residential account? advantages of home hosting. 1. you can add a hard drive for more space at $79 for 2tb from staples. 2. you are nearby if your logs catch...
by ejonesss
Dec 31 2016 11:55am
Forum: Battery Technology
Topic: Lithium Batteries Shipping Rules Discussions
Replies: 281
Views: 49945

Re: Lithium Batteries Shipping Rules Discussions

does the charger have to be functional? if not couldnt you just connect some wires to an empty enclosure and make claim it is charger? Well from what I can tell as long as you don't send the batteries as batteries but send them as a package with something else , i.e. a battery charger that has all t...
by ejonesss
Dec 29 2016 10:27am
Forum: Battery Technology
Topic: turnigy usb power bank
Replies: 6
Views: 572

Re: turnigy usb power bank

i guess no one is up to sacrificing some money to tear down one ok i will be buying one today. update: while looking at the dimensions Size: 128x76x16mm 18650 could easily fit the length leaving enough room for additional ones along the width too. 16 mm is not enough room for 18mm unless it bulges t...
by ejonesss
Dec 28 2016 5:27pm
Forum: Battery Technology
Topic: turnigy usb power bank
Replies: 6
Views: 572

Re: turnigy usb power bank

Hillhater wrote:Very low output rating, so just a simple 10 Ah lipo with a voltage converter .
Something like one of their Mulistar 2 C cells probably ?

thats why i was hoping someone would have bought one and opened it up to see whats inside.
by ejonesss
Dec 28 2016 5:10pm
Forum: Battery Technology
Topic: 18650's not being shipped from China?
Replies: 7
Views: 889

Re: 18650's not being shipped from China?

could you ask the seller to ship them overnight by air freight?

it could be possible that china is hosting some event like the winter olympics that is preventing shipping.
by ejonesss
Dec 28 2016 5:02pm
Forum: Battery Technology
Topic: turnigy usb power bank
Replies: 6
Views: 572

turnigy usb power bank

https://hobbyking.com/en_us/turnigy-pow ... -2-1a.html


has anyone gotten one of these and tore it down to see what cells it uses?

for $10 to $15 it seems too cheap to be a single cell.