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  1. D

    How much do you think my battery is worth??

    basically new 10s6p 30Q 40amp BMS or you could bypass... long story short... I started my E journey with an eboard first then got the idea to build an ebike to do deliveries in manhattan as a side job. So def not a performance bike but as stated a delivery bike. Now before I knew anything about...
  2. D

    30Q - 6p build... bike range disappointing - IDEAS?

    Hmmm this is kinda hard being its a delivery bike and trying to run it till its dead but will attempt.. Usually when its sagging hard its around 32v with throttle as it levels out...
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    30Q - 6p build... bike range disappointing - IDEAS?

    yeah its almost like a perfect twin post about initial balancing. All cells now are balanced and reading the same voltages since last tear down, but actual capacity is still an issue.
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    30Q - 6p build... bike range disappointing - IDEAS?

    bump... i re-read yur previous posts mentioning testing but not specific enough details for my noob brain.
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    30Q - 6p build... bike range disappointing - IDEAS?

    right, sorry, im not trying to be difficult but how exactly am i testing the resistance for for each cell and series connects and are there specific value ranges i should be looking for? where should i be putting the probes for interconnects and series? thanks!
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    30Q - 6p build... bike range disappointing - IDEAS?

    ok..so i just tore it all down.... Ill post the numbers in just a sec per cell, and string, which were all pretty consistent... BUT only 1 cell in string 10 wasnt making contact with the cap ends.. but had a charge of 3.8v ... can one cell not making contact with the pack be the achilles heel...
  7. D

    30Q - 6p build... bike range disappointing - IDEAS?

    ok, im gonna unwrap the battery here later, remove all the bus bars and then measure each cell voltage individually (while still in vruzend caps and in full pack form)... should i try and test for resistance or something and how?
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    30Q - 6p build... bike range disappointing - IDEAS?

    https://endless-sphere.com/forums/viewtopic.php?f=14&t=92382 id paraphrase it but its not a very long thread...
  9. D

    30Q - 6p build... bike range disappointing - IDEAS?

    yes on the 6 bus bars per series connection...and I used 2 of the terminal crimps on each end... i may have been able to squeeze 3 on there but it would have been a tight fit IMO... as the battery has still been sitting on the charger for 2+ days now...watt meter is reading at 14ah now from...
  10. D

    30Q - 6p build... bike range disappointing - IDEAS?

    so heres what we got.. i rode the bike with a full battery till it started to sag as usual... then i took this video of the results with the watt meter from battery to esc... reading about 6.5ah used and average range of 15mi.. with voltmeter still reading about 20% capacity under load...
  11. D

    30Q - 6p build... bike range disappointing - IDEAS?

    nah not the charger... i mean if anyone is bored and wants additional reading homework heres my initial thread about the voltage coming in shy of 42... but i feel thats decent after closer monitoring across all packs... but i will solder both connections on each ond of the watt meter so i can...
  12. D

    30Q - 6p build... bike range disappointing - IDEAS?

    so what? which amp? no clue, didnt say on the listing nor did it say in the instructions or controller =/
  13. D

    30Q - 6p build... bike range disappointing - IDEAS?

    I bought the earlier Samsung/LG batteries from Alarmhookup. I've run them down and filled them up, and my wattmeter always says they're 4AH. So using them as a calibration, your new battery is 16AH x 16/25, or 10 AH? That is way off. However, it's very consistent with your first battery. no...
  14. D

    30Q - 6p build... bike range disappointing - IDEAS?

    ordered a cheap watt meter off amazon the other day..so will see in a few days once it arrives..
  15. D

    30Q - 6p build... bike range disappointing - IDEAS?

    heres what the site says which i may have overlooked but an interesting thought.. "We recommend that for best results, you limit the current draw of the battery pack you build with Vruzend battery caps to approximately 3.5 A continuous per cell. Current bursts of up to 7 A are acceptable, but...
  16. D

    30Q - 6p build... bike range disappointing - IDEAS?

    no clue, but heres the link to the hub i bought... id assume a range of something like 30-40amp? but the BMS is a 35amp max so that would cap it even if the controller wanted more...
  17. D

    30Q - 6p build... bike range disappointing - IDEAS?

    no, it works for lith ion...you just set it up for what ever battery type u got... today i payed a hair more attention to voltage and would say around 34-35v is about when the batteries start to get sluggish... I cant say the weather has been too cold..it is nyc but the main cold snapped has...
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    30Q - 6p build... bike range disappointing - IDEAS?

  19. D

    30Q - 6p build... bike range disappointing - IDEAS?

    i have a cheap voltmeter wired in... displays battery voltage or a percentage... usually around 20% https://www.ebay.com/itm/LCD-12V-24V-36V-48V-Lead-Acid-Battery-Status-Voltmeter-Monitor-Meter-Car/112653808359?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
  20. D

    30Q - 6p build... bike range disappointing - IDEAS?

    yes...its been maybe a few weeks of running this new pack
  21. D

    30Q - 6p build... bike range disappointing - IDEAS?

    So I built my first 10s6p build using a vruzend kit and had a thread about that here about a month ago. At any rate the actual range I get out of the pack is way less than what I was expecting... out of 3 batteries I use on my ebike, which is also a delivery bike in NYC, my 30Q has the worst...
  22. D

    First Vruzend build.. voltage just short of 42v

    one last bump and update... i ran this pack this week while doing deliveries... most times I run it till its empty..meaning not empty empty as in WOT and no response but more like the pack is low enough to where I need to start pedaling more than necessary at which point I plug in my backup...
  23. D

    First Vruzend build.. voltage just short of 42v

    getting closer! the light bulb helped i assume... string 5 still the lowest but heres the most current results after charge... 1- 4.2 2- 4.2 3- 4.15 4- 4.16 5- 4.07 6- 4.2 7- 4.16 8- 4.17 9- 4.15 10- 4.18 So all very close with in hundredths for the most part...
  24. D

    First Vruzend build.. voltage just short of 42v

    how balanced is balanced? 4.12v on strings 1, 2, 6 4.14v on 10 4.09v on the rest thx
  25. D

    First Vruzend build.. voltage just short of 42v

    well were up to 41 - 41.1v now... i broke string 5 apart and replaced the caps on the low one just in case... then marked each cell that had made it to 4.12... I re-dispersed them though a few other strings hoping that in a row of 6 if one was a lil high the bms would balance easier instead of...
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