Search results

Date Relevance Most replies

  1. S

    Regen/charging/Standard C-rating & voltage questions

    Couple general questions for all: 1) What is the basic recommended charging speed for, say, Samsung 18650 3ah cells? If they were in a 4p config at 12ah, could one safely charge them with a 3a charger? Is .5C or 1C a standard for best practices charging for decent cycle life? How far could one...
  2. S

    BMS & regen braking/ discharging question re 18650 cells

    Question for anyone with knowledge of bms/charger/regen capable controller - I have a generic controller with regen braking using 12s 10ah Samsung cylindrical cells and was told that the amps being put back into the battery are slightly high for a 12s setup using this particular controller and...
  3. S

    Skateboard ground clearance in general?

    Working on a small project and was wondering if the skateboard crowd could tell me the general ground clearance (ground to bottom side of board) on a typical/average skateboard and/or (ground to bottom of battery case if bottom mounted) for an e-skateboard? Thx! (street only - not for offroad...
  4. S

    Port style to use with 12s vs 6s battery packs...

    Question for charging: I notice that the 6s 10ah or smaller scooter ports seem to be like the attached pic 1a/1b whereas the 12s 10-15ah or higher seem to be like the attached pic 2a/2b (XLR three pin style). Question: Can one use the 1a/1b style to charge 12s or is it too small a...
  5. S

    Max amps on a lipo calculation & motor 3 phase wire melt...

    2 part question: 1) I bought 60 pcs 2500mah Samsung 25R 18650 cells and put them into a 12s5p config. I am told a safe continuous max is about 3c So let me know if this math is correct: To get 35a max draw on batts (what the motor seems to safely be able to handle - it's a small brushless...
  6. S

    Charger voltage too high for battery pack w/bms?...help

    Ok, maybe a dumb question but...if I were to charge a batt pack with a charger that is higher voltage than the pack would the bms manage the higher voltage and limit it or would it wreck the bms and/or batteries? 1) I bought a 12s5p (2ah 3.7v nominal cells at 44.4v nom / 50.4v max charge)...
  7. S

    List of available commercial mini E-Scooters/E-Skateboards

    Current & Coming Soon List of Retail Mini E-Kick Scooters, ESkateboards and related small vehicles (all under 100lbs, except the AWD 54mph BoxxScooter but thought it was unique...) Note: last update 6/14/16 *This list is arranged from highest to lowest price (and if a maker sells various...
  8. S

    18650 Battery cell weld-free connectors?

    Having contacted several Chinese distributors of 18650 batteries (many from the "recommended lists" posted in various areas on this forum) they are either exhorbitantly expensive to buy AND ship to California a complete welded pack w/bms or the loose cells without tabs are very reasonably priced...
  9. S

    Lithium batt/bms/charger combo suggestions? - new to board

    First post - appreciate all the topics/posts I've read and researched over the past 12 months here! Questions about lithium battery wholesalers/retailers specifically with additional focus on matching bms/charger. Project Mini seated lightweight electric kick scooter with removable seat (think...
Back
Top