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thanks nealh. i do have an identical lcd display on my bbs01 i can swap over, to test the cutting out problem kirsten mentioned she had earlier in this thread.i also have a couple of those voltage displays u mention. ill try an rig one up. when this issue first arose many months ago and i...

update. adjusted charger to charge cells to 4.05v. all at 4.05v 24hrs later all 4.04v several days later all still at 4.04v. used hot glue to make sure bms socket doesnt work loose.think all the pins are making good contact. Optimistically set off.pulling high amps on cpl hills early on was...

nealh to the rescue again,thanks mate this will save sooo much time. theyre all pretty much the same ,just two higher. Then i can see how it balances up with the charger set for 4.05v which they can all reach. After that i can monitor how evenly they charge/discharge over the weeks. if i can...

Hi. i know how to manually balance cell groups with a mobile phone charger. But to save a huge amount of time . Can someone tell me a method of bleeding some charge off say 2 groups rather than adding to 12. For instance,maybe a bulb with a couple of wires soldered on? and would it be attached...

just checked the vr4 actually marked vr2 (the vr4 marked spot next to it is unused).yeh ...its fully adjustable.i didnt bother seeing how far it went, but several volts either way in .1 increments by the looks. the meter charge current i found is 3.15 amps at the moment so left it alone.

thanks for all the help nealh ill try those suggestions on adjustment out today.ive still yet to do the test to see if the cells/which cells self discharge, after being fully charged. on that note all batteries lose a bit of charge with storage.im assuming its just it shouldnt be a noticable...

Hi nealh,It eventually went out again. could be some cell groups lost a little charge over days sitting around causing imbalance to return.i notice the display shows the voltage is holding tho. So u think the lower 2.5Amp charge current (mines 5Amp)combined with setting to only reach 4.05-4.10...

hi nealh ,i get that. My question tho is Earlier you discussed that it would be better if all the cell groups were charged to what the lowest could hold .Rather than higgledy piggledy final voltages. But It sounded as if you were then saying it wont make any improvement to performance. So im...

thanks for that explanation nealh. regarding your second sentence, is it worth getting one of these chargers after all then and trying to get all cell groups to 4.1v? would it make any difference compared to the charger i have taking some to 4.20v whilst others may be 4.05 or 4.08 etc. my finger...

hi nealh. So if i buy say the 2.8a model i assume it will charge slower than the 5a charger the battery came with.thats fine. How do u set it up tho, to ensure each cell group only reaches a say max of 4.08v or 4.10v. do you have to multiply this by x14 and then set the HLG to that 57v odd, or...

Yes good point nealh would explain the randomness. i can see the female connectors undersides are exposed luckily. i can try press them tighter.

When i bought a 30q battery a year an half ago ,the 30q was considered the dogs bo##ocks. now im hearing its just bo##ocks...sigh

hi kristen.i have no one to try this, but i do have an identical display the latest version 850c. i ll try it but i think the voltage sag is more likely the battery deterioration. some cell groups are unable to charge beyond approx 40.08v while others can reach 42v. Perhaps they sag worse as...

thanks so much nealh.yes a typo. im thinking if the cell banks can all even out around 41.0v then all is not lost. one thing bothering me tho,has been a few cut outs requiring the bms plug pulled out and re inserted to get the bike going again.This was when even the lowest cell groups should...

hi nealh could you give me specific models of adjustable chargers like that HLG u mention so i can look for sellers. for a 52v battery as u know. something that can allow tuning a 57v cut off for example instead of 48.8v. thanks

ill look into them ta

thanks for the clear explanation nealh.do chargers all have this adjustable voltage trim pot feature? mine is YEWY model UY180-D5 seems nothing inside or out adjustable. as with another low group it may take a higher trickle charge 2nd time around. ill post results. charging all to the lowest...

thanks wheeliepete an nealh.i ran them down with the throttle an the wheel off the ground.the overall voltage of the battery fully charged as it is, hasnt budged a spec over 3 days from the display readings. i had tried trickle charging another random 4.05 cell group but it wouldnt budge above...

cheers nealh. still alive. ive made a bit of a mess of things.the 3.92 group refused to budge above 4.08. but i then tried the 5v phone charger on it again.not thinking it would ever get to 4.2 and didnt moniter it.was surprised to find it too has reached 4.4 this 2nd time,damn! dropped...

the firm electron cycles seem reputable.they say they use genuine cells and they look so. the 3.92 group charged to 4.08 and no higher.after a few hrs reading 4.05. i decided to see how many can reach 4.20. left the first too long.it went to 4.40 but after a few hrs dropped to 4.35. gonna...