Endless Sphere

i would worry more about a potentional inbalance you get from partially charging it constantly. most of the cheap non-programmable BMS dont do any balancing until a cell goes beyond the 4.22V mark. under that you can have increasingly more inbalance that is not remedied until a cell is so unbalance...

You need to change the P7 setting to 5 if you want a "dead" start. On P7-0 yes it can be too much torque and overbearing, but changing it to its weakest setting should make it more palatable for you (and increase your range as well).

(I own a Dualtron Spider).

Motors are rated for watts, not voltage. With that said, connecting a 13S battery with a controller that requests significantly higher amperage will result in sending significantly higher current to that poor motor which may not be able to handle it. Small increases in net wattage should be fine, bu...

DO NOT connect them at the discharge, and then charge both at the same time. That is not safe. You need to modify the bms charge connections to do that safely. Close enough voltage to connect up once charged seperately, IMO. There will be a surge as the higher pack charges the other, but not that m...

Hi, I have a unique situation when it comes to my parallel setup. I have successfully paralleled two 17.5Ah 60V packs 16S 5P (Sanyo GA and LG MJ1 packs) and range has been dramatically increased (could easily hit 60 miles with a little tact on my Dualtron Spider). My question is that the scooter cam...

So...to be safe, you'd want to separate the charge ports when discharging, and the discharge ports when charging. But they can be paralleled just fine whenever performing the pack operation the ports are designed for. Thanks for such a detailed response! Much appreciated. The only time I would be e...

Unless both BMS use only one set of charge/discharge leads you need to charge only with the charge side. Many BMS won't balance or shut off if charged thru the discharge side. I don't see a concern charging both packs with 8amps if parallel. Concern is some BMS don't like much over 5 amps. While ch...

The simplest way to ask my question is, will I cause any damage if I charge through the scooter's charging port if I have both the internal and external paralleled? Would the internal battery connected to the scooter's charging port also be sending current to the external battery in parallel to keep...

What you are suggesting should mostly be fine depending on your wiring. I say mostly because I am not sure how you are going to keep you battery balanced at 64v. And, if you are going to give the GA cells 8 amps (not 4a) then you are pushing their standard charging limit. The wiring is key to what ...

The finger trigger is simply a potentiometer, rerouting that to a thumb throttle should be a basic case of soldering lines between the existing dualtron throttle to that thumb as long as you know which goes where. The voltage range should be identical to avoid any rideability issues. You can't get r...

This question doesn't relate to an e-bike, but an electric scooter (Dualtron Spider) Hi, I was reading through the sticky in regards to parallel battery setups, and my plan is to run two 16S5P packs (one pack is LG MJ1 with 10 cycles and is internal to the scooter, and one pack is Sanyo GA cells wit...

Yea you can't believe the specs it just doesn't matter Chinese is ALWAYS cheaper and how does that show? In performance. Like they say you can only check so many at a time speed, acceleration, cheap, reliable. If you don't mind me asking on forums behalf what did you pay. $1050, plus about $260 shi...

You have to understand that when these manufacturers/sellers advertise the specs of these machines, they are simply telling you what the machine is actually capable of doing. But that would more likely be the case with no one on board, no wind, no terrain etc. But yes I agree with the reason you wo...

I forgot to mention, the advertised max speed is 90 KMH according to the seller.

Hi, I purchased a 60V 3200W kickboard from Alibaba (Puai T11B) which isn't doing the advertised speeds. Specs are: Dual motor brushless 1600W x2 60V 33.8Ah Li-ion battery 35A controllers x2 88lb net weight On a long flat stretch, the best I could get this to is around 41 MPH (66 KMH). With these spe...