Recent content by jwunder

To follow up, if anyone cares: it turns out that I screwed up both controllers, which were both giving me 30h errors. Don't know why. Guess I was too rough. Anyway, I got a new controller last week from bafangusadirect. It was a blast, better than any other bafang controller I've had. It...

You may be right. New display still gives me 30h with the second controller. Speedometer doesn't work either. New controller should arrive after easter. If that doesn't work, it's the harness.

I soldered the extra resistor on my buggy controller, just as a test, and I was impressed. Blistering acceleration up the country hills where I live. I could probably keep up with most cars and motorcycles around here. The rear suspension actually kicks back, which I never noticed before. The...

Thanks. I now think something I did to the first controller damaged the display (possibly by touching two wires together?). That's why I'm seeing the same 30h on the second controller instead of 12h. I have another display and controller ordered, but I'm reluctant to test the new display with...

Hi, I tried the shunt mod. Well, to prepare for it anyway. I got as far as the depotting and removal, without the soldering the resistor, and then retested it on my bike. It gave a me a 30h error. Nothing works, except the display, and the voltage reported is about 6 volts lower than the actual...

Wish I'd thought of that. I read somewhere that if the pack doesn't get warm during charging, you're ok. Mine don't, but apparently that's still not true. I'm charging these 14s6p packs at 6 amps. I guess the hg2's can handle it, but the mj1's can't. Vtc6 would probably work well too.

Yeah, then the hg2 is better for me, for only a small loss in capacity. The quick charge is worth it, since I like to charge right before I use it. My understanding is that leaving a fully charged battery around for awhile is also bad for battery life.

Over the last two years, I've built equivalent packs from both mj1 and hg2 cells. The mj1 pack had a little more capacity at first, but has not held up over time. It's fading fast after only 100 cycles. But the hg2 pack is older and still going like new. I thought the mj1's we're supposed to...

Thanks, good point. The thing is... I don't have any room for more cells in the triangle of my bike, but I do have room in front of the downtube. I was thinking I could use that room for more voltage, or for another separate 14s battery for more capacity (not wired in parallel). I suppose I...

Hi, I currently have a 52v battery pack on my ebike (14s6p). Can I make another battery (7s6p) with the same type of 18650 cells with its own bms, and connect it in series with the first battery to get a 21s battery? The batteries would be charged separately, but discharged simultaneously in...

Yeah, but I'm seeing 5kw hubs for the price of a BBSHD. I would have gotten a smaller bike for it tho, which I probably wouldn't have liked.

I have a 29er with hydraulic, so we'll see how it goes. Maybe I should have went with a hub bike, but there are hills where I live. It's just that... you do all this research, finally pull the trigger, and the actual product doesn't match what you read about. Bafang changed the software without...

I have a BBSHD with motor number 190823, bought in Oct from Amazon. In the config tool, it has the 28 amp limit and I'm pissed. Hardware v1.5. But if I returned it and got another one from another seller, I'd probably have the same issue. I guess I'll have to live with it or do the shunt mod if...