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  1. T

    sizing cell interconnections

    Hi, I am building a new battery for my dirt bike with 30s15p NCR18650PF cells. Currently the cells are connected with 0.4" x 0.006" (10mm x 0.15mm) nickel strips. The average total current draw is about 90A, but the pack should handle short peaks of more than 200A. I am unsure if an additional...
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    MeO913 with two controllers

    hi everybody, I am converting an electric outboard motor to electric. (see http://www.endless-sphere.com/forums/viewtopic.php?f=39&t=40553) The motor is a dual stator brushless motor. I think about using 2x sensored 36Fet EB236 controllers, one for each stator. Could this lead to timing...
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    e-outboard fishing boat project

    Hi, ### edit: I changed the plan and will convert an old outboard motor to electric. I replaced the combustion engine with a ME0913 motor. ### I think about building two (separate) electric outboard motors for my future fishing boat (details...
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    scooter hub motor - hall sensor placement

    hi, I hope that somebody can help me with troubleshooting my 3kw brushless scooter hub motor. The third controller is still not working. the story: This summer I bought a used scooter with 60V lead acid batteries. The original controller let the hub spin but the speed was less than 10km/h up...
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    solder wires to a capacitor?

    I want to mod my infineon controller for 100V and bought 1000uf 200V capacitors (snap in) which are too large to mount them directly on the pcb. Is it a good idea to attach wires and place them about 40mm away? thank you! tef
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    xc846 board, TO-247, fets blown!

    Hi all, I have bought an e-scooter with a 3kw brushless hub motor and worry about which controller to use. I removed the existing controller (only for 60V sla) and was just about to order a new 24fet infineon, so that I can attach 24-27s A123 batteries. But after opening the controller housing...
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    Meanwell protection

    Hi, I use two meanwell s-350-48 connected in series for charging my ebike and scooter. I attached a switch to parallel an additional resistor to the svr1 pot to be able to select between 30s lifepo and 24s lipo charging voltage. Everything is working fine, but I wonder what happens if I...
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    problem with celllog opto circuit

    Hi, I have soldered together a celllog opto circuit for a 24s lipo setup. It works, but under heavy acceleration the optos switch for very short periods. The celllogs don't display an alarm event in this case. Also the cellvoltages are far away from the lvc setpoint. The two optos are...
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    bm6 - opto - ebrake

    Has anyone tried to modify the battery monitor 6 sold by hk in a way that it can be used to trigger the ebrake? Is it possible to extend the short signal impulses used by the buzzer and connect an opto? tef
  10. T

    ping 36V20Ah problem

    hi ebiker, I have bought two ping 36V 20Ah packs last year and use them for my bmc geared hub @36V. After a few rides, I realized that one pack had a slightly higher voltage drop under load. I did not care about this because I have never had a bms low voltage disconnect, even a 40km ride (with...
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