Endless Sphere

No mention of balance current in the specs. A BMS usually stops charging when any single group reaches the maximum set point, usually 4.20 volts. If you have a situation where one group is at 4.1 or 4.0, those groups never reach full charge unless the BMS can balance them. It does this by dischargin...

I don't think your BMS has a balance function, if that is what you wanted.

Are you using the same sensor with different rings? You might have the disk backward with the split rings. You can mix things up, but they only work properly with the magnets on the disk coming at the sensor with correct polarity/direction. The number of magnets used in P1 is for smoother operation,...

Did you mount a mid drive bafang BBS in a cruiser bike?

THe alarmhookup batteries only have the single XT60 plug for both charging and power, but the BMS circuits were designed for a separate charge port.. I took one apart, and peeked under the shrink wrap at another that had a different BMS. Both had unused C- pads, intended for the return leg of a char...

Might work differently under load. I've never really tested an LCD3 PAS on a test stand except to verify that the PAS sensor was working.

I've got a KT controller that goes nuts trying to display speed when motor is running. Works OK when coasting on the external speed sensor. It's not a Q100 motor and I have the wrong P1 setting not knowing either magnet count or gear ratio. If I spin the motor backward and count the number of toggle...

If miataman2000 is using the alarmhookup packs, the BMS charge ports are not used in these packs. The maker decided they would be charged thru the discharge port. Consequently, I charge mine in parallel.

What's the main risk? Charger fault and over voltage? That's why I charge them outdoors.

Pretty cool. I see two motor cables coming out of your controller. They have to be independent of each other, so it's like two controllers but in the same box and sharing the same throttle and PAS.

That's something most of us have not seen before.

The Q100H speed sensor is the white wire at the end of the motor cable. It uses the same 5V and ground as the three Hall signals, so if they work, the speed signal should be there. You should be able to spin the wheel with power on and watch the line move up/down once per rpm with a voltmeter. Q100H...

There's got to be two controllers for the two motors. I would guess they use PAS for one motor, and throttle for both or one motor? With the above complexity, you probaly have to figure out which motors are supposed to be running under these inputs and then you can say throttle good, PAS bad, or wha...

Look also at the bracket for the pedal assist sensor and the magnetic disk. Some owners report the disk getting loose somehow and slipping on the crank axle, or it has moved too far from the sensor.

You also mention a BTN model with two motors. Is that the one that is acting up?

Been to Calgary in September, July, and August. Good grief, looking at that snow makes me sick again ( I ate some bad ice cream last night and was sick all night).

Put 3 volts on the throttle input, with wheel off the ground. It should start up reliably. If not you got an intermittent somewhere. Could be inside the controller. It's just a $20 part. Not going to be well made. If the Hall connections were bad, there's an associated LCD3 error for that. Likewise ...

When speaking of the external lights, I never hooked mine up, I cut the wires off inside the controller and insulated the ends. I also don't use cruise or EABS. Removed them too. And, yes, pushing the up arrow will turn on backlighting on the LCD3. I recall it also can activate walk mode if the bike...

It seems to me that your first controller used a what they call a 1-4 waterproof cable, which is a integrated harness with two brake connectors, a throttle, and the LCD3 plug on one end, and a single round connector on the other. Usually found on manufactured ebikes. Your second controller has the u...

You could make a 10S5P 36V pack which will be 42V at full charge. Use a 10S BMS wired conventionally, and charge it with an inexpensive 2-3A charger. I know nothing of hobby chargers. Three 12,6V packs in series is only 37.8V full charge, same as a half depleted 10S pack. I think that will feel weak...

You misunderstood. Not wanting to buy wait, I' hooked a spare PAS sensor to the speed sensor input. Just needed a signal that flashes when the spoke magnet passes by.

Speed sensor is $10 for an external unit, or the motor may already have it inside the hub. I've used PAS sensors mounted on frame for an external wheel sensor. Many KT controllers used with the LCD3 have a speed sensor connector. Usually a white white on a three pin JST. Move that wire to the six pi...

The Giant Twist is an old front drive hubmotor. We all assume it is a brushless motor? If the old controller is still around, I'd see if it still powers up. Then I'd check its hall wires, if that's what they are, to identy +5V. Probably Brown/Black. Now there's only four left. Then if you want to be...

No. It's a pain to replace a BMS.

The BMS on an old "mini" Luna pack I've got here does that sort of thing sometimes. When it does, I actually have to drain the pack some (hook it to a bike, ride or run the motor, or hook it to a heater or other load for a bit, etc), and *then* I can charge it. . I have a 52V Luna Mini and their fa...

I installed that Annpower BMS yesterday. It works. What I liked about it. The C-, B-, and P- terminals had 4" lengths of silicone wire already attached. That kind of wire is hard to solder onto a circuit board pad, so that was nice. The other end I soldered. The silicone wires were easy to squiggle ...

You need to provide a better context for looking at that plug. Like where is it going? To controller or to motor? Is the controller a separate black box or is it inside the motor? There's no a need to run more than 2 wires to a battery unless you have a proprietary system where the extra wires carry...

Yeah my first post was in reference to the first battery at 52.5v. The second battery has two 0.6v banks which I won't use so that one I'll be tearing apart for another project. Another reason I'm keen on an adjustable balancing charger. The third battery was at 42v. To summarize. -FIrst battery al...