machuni said:Hi Danny, I downloaded the .bin file and moved it to my phone and it's not showing up on the app when I try to update? Is it because I already have 01.01.10?
chuyskywalker said:Seems I have a nearly 2 year old version that I definitely see newer versions of from this thread, but nothing on this screen gives me a way to run any kind of update. What am I missing here to get the latest?
chuyskywalker said:If I run a "balance" or "balance charge" the BMS will either disconnect the charger or claim the balance is complete instead of bleeding that high cell (#2) and getting them all in sync. So it's, uh, not balancing. Perhaps I have a setting wrong somewhere?
speedict said:can i have your charge setting ? you can refer to user guide page 14. CHARGE option.
e.g. if the CELL BALANCE DELTA is greater than your pack's cell delta value, it will end balance work immediately.
speedict said:hi, 1.0.0 is the latest firmware for Neptune 20.
chuyskywalker said:Ah, ok. I do seem to be getting a crash when I try to import logs; was hoping there was something newer before I asked about the problem.
I select "records", then check mark one, select "import", it shows some details, I select "Start Import", progress bar fills up and at 100% the app closes.
I've checked that the app has all the permissions, and as best I know it does. Pixel 3, Android 12
machuni said:Hello, my neptune 15 on/off toggle switch broke. Any recommendations for a new switch I can sauter to turn it off/on?
electric_nz said:Feature request- is there any way of setting up a charge cycle counter? Just to keep track of how many times a battery has been recharged.
chuyskywalker said:Regardless, new unit has been working great since replacement.
chuyskywalker said:chuyskywalker said:Regardless, new unit has been working great since replacement.
Wish that was the end of the tale.
I now have two mosfet shorted neptune 20's, and recently found the third unit has killed half of my battery pack (20s3p). The entire second half of the battery drained to zero volts; every single cell is dead (30pc p26a cells, ugh).
I will admit: I left the unit on and perhaps that's something I shouldn't have done. However, that's an extremely simple mistake to make... how can I trust something that is supposed to protect the battery pack if it bleeds it dry from being left on?
This BMS and its two fried brethren are going to the e-waste bin.
rosich said:please check your battery pack or anywhere that's drain half of your battery pack ? Neptune took power from top cell which's 20th to ground and even its bluetooth is in searching mode but with its uA level of power drain I don't think it can drain up your cells
chuyskywalker said:Even more to the point, even if something else was connected (which was not the case) nothing else could have drained half the cells in this way as nothing else would be connected to the battery pack through the balance leads. Any other connected load would have been through the bms and would have drained the entire pack, not half the cells.
chuyskywalker said:(And even then, if the BMS could be trusted, would have only drain the whole pack down to the LVC; not completely wreck it.)
rosich said:my point is if BMS is defected ...
rosich said:your case is suspected the ICs problem right ?
chuyskywalker said:rosich said:my point is if BMS is defected ...
rosich said:your case is suspected the ICs problem right ?
I'm not an electrical engineer, so I can't really weigh in on what went wrong exactly. However, given it was the only thing (effectively) plugged in, and that batteries don't just self-discharge half their parallel groups, I can reasonably conclude that the BMS is defective.
More importantly, however, is that this is the third bms of this model which has failed in a critical manner. 3 failures out of 3 is all the chances I can give something.