Recent content by stevo

thanks for the replies all. Anyone know what LVC is on a typical Crystalyte 20A max controller? For that matter, is there a typical BMS LVC for 36V Lithium batteries?

I used to think that LVC would manifest itself as follows: as soon as a battery's voltage output dropped to the LVC voltage, the controller and/or BMS would cut off power from the battery and you could not use the battery until you charged it above the LVC voltage. But in fact, recent...

As a lithium battery ages/degrades, I assume this means that it will hold less Amp hours (e.g a 10Ah battery when new might only hold 9.1Ah after some time/use). But is there also a decrease in operating voltage? For example, I have a 36V Lithium Polymer battery. Its about 1.5 years old and I...

For those of you who are using non-standard voltages (say 60V or 66V or 88V), I am curious about 2 things: 1) what controller are you using? e.g. if you are running 60V, do you use a 48V controller and just hope that it can take the higher voltage? 2) how are you charging your battery(s)? e.g...

37, wife, 1 kid. Got into ebiking to: 1) commute to work 11km and not have to shower (and also get there a bit faster than on a non-motorized bike) 2) get exercise on the way home from work 3) save $ on gas/parking/maintenance for car work for the government as a Senior Operations Analyst...

thanks to all of you for your feedback

oh well. thanks nutsandvolts

I've thought about adding 12V (10 Ah) Lithium (either LiFePO4 or LiPo) but I've never seen any batteries less than 24V for sale. Can you tell me where I could find one? Of course, another cost to getting a new 12V Lithium battery would also be buying a 12V charger although I would think that...

Is there any way to easily convert an "immediate start controller" to "pedal-first" ie sensorless? ie could it be as simple as unplugging the hall effect sensor wires in the controller? You're probably asking "why the heck would anyone want to do this?" well, say I've got a broken hall effect...

Hi Ypedal, Why is it called a "36V" controller if it can be used at 48V? (there has to be a catch e.g. increased risk of burnout) Hi Dogman, I think a 407 would be a good compromise but so far I haven't been able to find one for sale. And yes, right now, I just want the motor (not enough $...

My understanding is that if you use multiple batteries in series, they should have the same amp hours. I think I know why but can someone provide clarification? But what about using batteries with different amp hours in parallel? ie say you have 2 Lithium batteries: a 10.5Ah battery and an 8...

Thanks for the reply Ypedal. Unfortunately, I am somewhat constrained financially. I currently have a 36V controller so if I were to follow your suggestion then, in addition to buying a 12V battery, I would also have to buy a higher voltage controller.

I currently have a Crystalyte 408 rear motor but due to several problems, I am considering buying a new one. I think I'd like to stick to a 400-series motor and I'm hoping to get feedback/considerations on what winding count to buy ie 406 or 408. Here's my parameters: 1) I weigh about 160lbs...

Is there a legend anywhere which describes the various icons (to the left of every topic post)?

hmm, I believe it was the yellow and green "phase wires" that were damaged (see attached picture). I soldered the wires and put black electrical tape over the soldered sections. In the picture, the yellow wire has a 2nd exposed section where I figured the wires were mostly intact so I ended...