I'm bringing it into my LBS tomorrow and hoping for the best on warranty coverage. If I'm not mistaken you hold the +/- buttons for 10 secs, correct? I've done that but it doesn't seem to do anything. The BMS will try to balance the cells, but most of them do this very slowly and only at the end of the charge cycle.I'm only seeing error code 1, I haven't gotten the diagnostics to work. Ideally you would use a single cell charger to top off each cell group to get them all up to 4.2v. If the pack is out of balance, it can be challenging to get it balanced again. Alternately you can charge the pack, then measure the voltages on the cells and compare. By comparing the voltages, you can see if there is one that is low. A good test is to run it until it cuts off or almost there, then measure the voltage on each individual cell group. This may be due to a damaged cell group or may be simply out of balance. What can happen sometimes is one cell group in the battery is lower than the others and will cause the BMS to cut off early. You should be able to get way more than 8 miles range. The controller may have its own LVC that would stop the motor but the display would stay on. I don't know about that model specifically, but if the BMS in the battery pack cuts off due to a low cell, for sure the display will go off. Sort of hard to tell from the pictures, but if it is a screwed on freewheel, the whole thing can be replaced but you need a special tool that grabs the inside of the gear cluster. If so, I may be able to get some parts somewhere. Is the motor on this bike a Bafang CST 500W? (See pics). Is the normal operation of the controller display to shut-down upon low voltage cutoff (LVC) on Currie bikes? Is it possible to replace the freehub body on the motor entirely? What about the teeth on the motor side? Is this in line with what is expected stock? Does this approximate range make sense? I sent an email to Currie and received no response, but as a secondary customer, I don't blame them.Īfter the battery was rebuilt the bike could get around 8 miles on totally flat Florida ground with just twist throttle before the display would shut off. I attached several pictures to help the effort. Even knowing this, I couldn't seem to find replacement parts for the freehub. Is it possible to get a part number of this freehub body? I had a hunch that the motor is a Bafang 500W CST but I couldn't be sure (see pics). I tried cleaning it and reassembling it to no avail. The pedals on the bike slip when peddling and after some disassembly I have concluded the freehub body has a problem preventing the teeth from engaging (or worse the teeth on receiver are gone). The smaller battery in this bike really needs the pedal assist to make it really useful with such a small battery. Now I can I-zip around electrically but the chain drive is still giving me trouble. Luckily the BMS still worked bringing the bike back to electrically running condition. Upon getting the bike I was able to quickly disassemble the battery pack and replace/spot-weld in 2500mah LG 18650s. Unfortunately, it looks like the specific bike from this series was discontinued and this has only complicated my endeavor. I knew it had a few issues (including a flat-lined battery) but it was a beautiful bike and wanted to resurrect it to its former glory and save it from the dumpster it was headed to. The previous owner let it sit for several years. Hi E-bikers, I recently purchased a second-hand Currie 2015 IZip Zuma E3 (48V).
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