Hello, I would like to know if anybody has changed the Rear Pulley and still has it. I would like to buy that used one to Design my own. Or I would apreciate it if anybody can send me the measurements of that wheel pulley. Idealy you live in germany or atleast europe.
Cheers
Are those plastic rings enough? Or do I need fishing paper for Extra insulation?
I have an 50ah 28s Battery I'm building for my motorcycle. And in the case is no more space left, so i want to build an battery extender. But the thing is... The bms is nearly always 170A+ big and expensive, when I only need like 30-50A. Has someone a reliable work around, alternative or idea? I would Do even an DC DC Boost converter to Charge the battery but Idealy I want to take off some amps off the Main battery by using low resistance cells. Any Tips are apreciated.
Edit:
It's an 28S 10P battery with 21700 M58T cells. They are protected with a 200a fuse, and have an 220a continuous ANT-BMS. The Battery is for 100a continuous and 200a peak. The cells are more for moderate ampere draw and with the battery extender I want more range and take of a few amps of the main battery for when I accelerate. Having another battery in parallel with lower resistance should give me lower voltage sag over all. With a high power cell instead of high energy density in that case. It clearly depends on the number of cells in parallel for the extender but still...I hope this makes things more clear.
I'm looking for a good BMS for a 28s setup with discharge. Clearly I Googled a few but I wanted to ask the community.
The discharge Current should be at 300 Max. Because the battery will see 200 Max. Just to have a bit of headspace.
-Ant BMS
-DALY BMS
-JK BMS
-JBD
Those are the ones that are familiar to me.
I'm using an AntBMS in an battery already. But it's about the possible communication I need for my System later on. Good App or atleast good documentation to be able to connect via CAN atleast would be nice.
I appreciate any Tipps. Did I forgot anything?
Hi, I wanted to know if the Fardriver Connectors are plug and play with the original connectors in the system of an TC Max?
Hello, maybe someone already Made it work but, the Anker Solix solarbank 2 extension Batteries are quite expensive. So the question is if it's possible to diy an extension. Because I don't know the protocol, I had following idea:
I have 4 solar panel Inputs, of which are two used. So there are two Inputs usable. If I now build a Power Bank with for instance 3 kWh I could Charge that with the solar Panels I have, as soon as the 1,6 kWh from the Anker is Full. Then when the evening Beginns and the solarbank gets drained or is drained, I could use a switch and a DC-DC converter to deliver Power to the Solarbank. Sure there's a loss but bc my electricity Meter has a reverse current blocker, every Wh put into the grid is lost. What are your thoughts? Or has someone already done that? Idealy I would Automate the system to manage the Power by itself.
Hi, I would appreciate some feedback and suggestions before I start building this battery pack.
The project is a custom battery for a Super SOCO TC Max electric motorcycle. The stock battery is a 20S (72 V nominal) pack.
The current design points are:
· Cells: Samsung INR21700 M58T
· Configuration: 23S13P (299 cells total)
· Capacity: 75.4 Ah
· Energy: ~6.2 kWh
· Battery current limit: 200 A (controller limited)
· Continuous power target: ~7 kW
· Peak power target: ~14 kW
· Cell current at 200 A pack current: ~15.4 A per cell
· Interconnects: 0.1 mm copper + 0.1 mm nickel sandwich
· BMS: not chosen yet (currently considering JK or JBD)
· 3D printed cell holders
· Steel enclosure
· Pack divided into 4 modules
· Modules compressed using threaded rods
· Temperature monitoring via BMS temperature sensors placed between the modules
· Passive cooling only
The bike is mainly used for commuting (30 km each way, mostly highway) and weekend fun rides.
I chose 23S for several reasons:
· It allows the highest cell count that fits within the available battery compartment.
· Higher voltage reduces current for the same power level.
· Higher voltage should increase achievable motor speed and therefore top speed.
· The controller is limited to 200 A battery current, so increasing voltage is the most practical way to increase power.
· The motor is commonly used with voltages above 72 V, so I believe this should remain within a reasonable operating range.
Things that are not finalized yet:
· BMS selection
· Main fuse selection
· Contactor / pre-charge strategy
As you can see in the pictures, I have cable connections between the packs because every module wasn't able to fit in all the cells for each S-configuration. They are there to connect the cells on the other side, visualized by the other pictures.
Is there a way to just mark every dimensioning and assign the same parameter to them? I want all oh those radii to be the same parameter so I can change them all together if needed.
