mark5 said:P+ according to Canoe's diagram and the bmsbattery ecitypower picture linked to in agniusm's post.
mark5 said:Battery + bullet goes to same place sense wire 13, P+, Load +, and Charger + go. It's just not shown prominently. But you'll realize it if you stare at the battery-side end of sense wire 13 for a bit. The battery symbol's + connects to there.
mark5 said:I don't know. Did you specify 12s lipo when you ordered the BMS? There's a "Product Customization" area on the webpage for that. In which case the B13+ pin and several components aren't present according to helgeo* in the posts listed below. You should read them because they have info about that BMS and use with lipo that might affect you.
Ah, I see. I've been referring to the diagram's wire 13 and you must be referring to your actual BMS. That's why you say "does that mean 12 is wired as 13 is in the diagram?" So yeah, 13 in the diagram would be 12 on yours. And you shouldn't have a 13 pin.
http://endless-sphere.com/forums/viewtopic.php?f=14&t=20971&start=100#p743767
http://endless-sphere.com/forums/viewtopic.php?f=14&t=20971&start=100#p746172
http://endless-sphere.com/forums/viewtopic.php?f=14&t=20971&start=100#p746270
* http://endless-sphere.com/forums/viewtopic.php?f=14&t=20971&start=100#p750286
http://endless-sphere.com/forums/viewtopic.php?f=14&t=20971&start=100#p754565
http://endless-sphere.com/forums/viewtopic.php?f=14&t=20971&start=125#p822328
[/quote]mark5 said:http://endless-sphere.com/forums/viewtopic.php?f=14&t=20971&start=100#p743767
http://endless-sphere.com/forums/viewtopic.php?f=14&t=20971&start=100#p746172
http://endless-sphere.com/forums/viewtopic.php?f=14&t=20971&start=100#p746270
* http://endless-sphere.com/forums/viewtopic.php?f=14&t=20971&start=100#p750286
http://endless-sphere.com/forums/viewtopic.php?f=14&t=20971&start=100#p754565
http://endless-sphere.com/forums/viewtopic.php?f=14&t=20971&start=125#p822328
wesnewell said:Here;s how I see it.
wesnewell said:He lost his house and truck because he made a stupid decision to bulk charge unattended with a faulty charger. And if you stand in the middle of the street long enough, you'll get run over.
Rodney64 said:wesnewell said:He lost his house and truck because he made a stupid decision to bulk charge unattended with a faulty charger. And if you stand in the middle of the street long enough, you'll get run over.
Just get a good Battery and don't play around with what Wes is talking about.
Somthing like this. Or buy one of his complete kits.
http://em3ev.com/store/index.php?route=product/product&path=35&product_id=160
nlhaines said:Rodney64 said:wesnewell said:He lost his house and truck because he made a stupid decision to bulk charge unattended with a faulty charger. And if you stand in the middle of the street long enough, you'll get run over.
Just get a good Battery and don't play around with what Wes is talking about.
Somthing like this. Or buy one of his complete kits.
http://em3ev.com/store/index.php?route=product/product&path=35&product_id=160
Well, it's a little late for that, as I already bought a bunch of stuff. I may be in over my head at this point, but I know to be careful with these things. I wouldn't mind reversing course and just buying a prebuilt battery if I could sell the lipos and bms, but none of this ebike stuff is very liquid.
In truth, they don't need to be hooked up like I showed with the thin red wires as long as the mains are in series, but I found that without them hooked up you get a few millivolts off, and I prefer to get it as close as possible. I have those cables, but I made them myself, and I made them to get to 2 6s balance plugs since that's what I needed. I don't use a bms. I charge the packs as 12s with a 12s capable balance charger.nlhaines said:Ah, okay. I didn't realize the negative lead on the balance cable had to be hooked into the positive balance lead for the next cell....Someone should make cables that go from 3 4s balance leads to one 12s, and do the same for common configs. I'd pay a premium for one of those at the moment.
Now, I'm going to work on wiring up the 9 batteries into 3s3p. Can I connect the batteries in parallel out of the box? Is it safe to assume they are close enough in voltage that there wont be a quick charge/discharge that damages the cells?
wesnewell said:In truth, they don't need to be hooked up like I showed with the thin red wires as long as the mains are in series, but I found that without them hooked up you get a few millivolts off, and I prefer to get it as close as possible. I have those cables, but I made them myself, and I made them to get to 2 6s balance plugs since that's what I needed. I don't use a bms. I charge the packs as 12s with a 12s capable balance charger.
wesnewell said:3s3p would be 3 cells in series for 11.1V. You're building a 12s3p pack for 44.4V, 12 cells in series. Normally, they are close enough to parallel out of the box, but you should check the voltage of each before hooking them up. You should probably do a store charge on all of them before using them to weed out any bad ones if you got any.
wesnewell said:If you're looking at a yescomusa 1000Wkit, this would be the one to get imo. This is the ebay seller for yescom, and this is their newer kit.
http://www.ebay.com/itm/48V1000W-Electric-Bicycle-LCD-Display-26-Front-Rear-Wheel-Motor-Kit-E-Bike-Hub-/291107275178
wesnewell said:The newer models have a disc brake and different rim, and 19mm rim compared to a 24mm rim, and it comes with the display controller and display.
That Trek doesn't say which motor it is. It could be the anything from the 250W to the 1000W model, and the controller may not be the stock controller, which is a 15 fet for the 1000W kit, 12fet for the 500W kit. I don't know what the 250W model comes with, but it may come with a 6fet, so it may be the 250W model. Know what you're buying before buying it.
wesnewell said:Well it's rated at 470rpm@48V, so that's what, ~9.8kv. This is the highest 1000W motor I know of, ~14.6kv. IMO, only good on flat ground under light loads.
http://www.leafbike.com/products/diy-bike-conversion-kit/26-inch-electric-hub-motor-kit/newest-version-26-inch-48v-1000w-rear-hub-motor-bike-conversion-kit-903.html
nlhaines said:Well if I screw up the BMS I'll just get myself a good 2 or 4 channel RC Charger. What do you do for LVC? Does the yescom kit handle that or do you have to add something?
wesnewell said:RPM /voltage
http://en.wikipedia.org/wiki/Motor_constants#Motor_velocity_constant.2C_back_EMF_constant
470/48= 9.79kv. 731/50=14.62kv.