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Erev, when you spin the back wheel backwards, there are two one way mechanisms engaging. One is called a freehub and this is what allows your pedals/crank/chain/cassette to apply torque to the wheel when you pedal, but disengages when you coast. The other is a one way clutch in the motor that...

I like mine, and would buy again. I have the 10.4 Ah battery and I usually get better than 35 miles on it. I am mostly in PAS 1 and sometimes I'll turn the motor off and pedal myself. Last time I took it out, I was up for a challenge and turned the motor off at the beginning of a big hill. I...

Let me know if it doesn't. I have some other ideas too. Edit... Question: Does your pedal assist still work fine even when your throttle does not? If both PAS and throttle are dead, then figure out which brake lever is the suspect one by pushing each lever (rather than pulling it) and see...

towelie, did you get your throttle working?

Well, I'm going to call the mod a success. Just got back from a long ride and clocked 35 miles over the course of several days. No dropping power or display issues. The display had just flipped from 2 bars to 1 when I finished. It actually crept back up to 2 after I cleaned off the bike and...

Those are good questions, and I would appreciate the answers also, so if you find out more, do let us know. The fix is not to the battery, but to the bike. So if you make the mod it will apply to both batteries. This brings up an interesting question though... What happens if the two...

Towelie, Great job on the pics. I also had a screw fall down into the bottom of the down tube, and ended up flipping the bike over to get it out. No water in there, but we haven't had rain in weeks, so no surprise. For anyone doing the mod, I suggest maybe wadding up a piece of paper and...

No, I should have taken pictures, but I thought of that about the time I was posting here. Sorry. Hopefully someone else will.

I called S604, and they confirmed that by clipping the green wire in their sample cases it fixes the problem. They said the green wire is sending a signal to the BMS to configure the pack, and for some reason it never stops being sent. So removing the wire is effectively canceling the...

Great, thanks. Keep us posted what they say about the green wire and if you perform the snip, what your results are.

Thank you GARN, I'm glad to hear S604 is on it, but sad to hear they think it's the BMS.

towelie55, I verified on mine that the display was inaccurate because the voltage measured at the output port was reading way more than the displayed fuel gauge showed. So at least on mine, I'm pretty confident my battery stack is healthy, and the display is in error. The second part about...

Thanks for posting. Before you rode it for 6 miles and it died, how much did you charge it, and how many days had it been between charging and riding? Also, when you say it started loosing speed, did it ever die, or just act a little sluggish? The battery does loose voltage as it runs down, and...

Good to know. Thanks for passing that along.

Welcome Gregggg, I'm from San Jose also. Mostly riding the Los Gatos Creek trail. Where have you been riding?

I think it's just the display. I also don't think you will get stranded, but so far I'm the only one who has tried to deplete the battery and I got 34 miles before giving up (it could have gone farther). 10 of those miles was with the display on empty. I encourage you to charge it all the way...

I have a feeling you are right. I think it would start slowing down at ~24 mi regardless of the week long gap, and independent of the display. One of these days I'll take it for a daylong trip and see what the range is. It's so dependent on terrain, how energetic you are that day, and average...

More data to absorb. I charged my pack a week ago and it read 54.5 volts, which is good. Full charge. Then took it for a 14 mile ride. It read 8 bars left, and 50.5 volts, so I let it sit for a week to see what happened. Every day I checked it, it dropped 1 bar on the display. This morning...

I don't think there is much parasitic load on the pack when it is on the bike, so taking it off doesn't help. Well if it has a half a packs worth of charge in it, it could go really long time. Oh, and to be clear, it's not the pack that starts flashing, it's the fuel gauge on the display. It...

I just didn't think to ask what the LEDs mean. Next time I'm on the phone I'll ask. So from your post, we've learned something. And this is what I suspected from my testing also. When the display showed empty, the battery wasn't really empty because it's physically impossible to charge it...