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  1. M

    mixing battery chemistry's

    Hi Richerson, Short answer is NO. Not at the cell level. If the makita pack is made of lifepo4 then cell voltage fully charged is 3.6 volts as opposed to 4.2 for lipo. You can parallel at the battery level. If you have 15 cells of lipo in series, then that would be 63 to 63.45v off the charger...
  2. M

    Low Voltage Safety Limits?

    What your describeing is normal. Does the pack have a BMS? If it does it will cut power if a cell goes too low. The BMS on my pack seems to trip at about 2.7V +- about 5%. Low voltage at rest is what you need to pay attention to. below 3V = its pretty flat. Once the pack is discharged you...
  3. M

    Amp output confusion - newbie.

    C3 is regarding dischage rate of the cell. The BMS on the 10Ah allows 3 times the cell capacity of the battery (pings MAX rateing on the current cells he is selling i belive). The BMS on the 20Ah allows 2 times the cell capacity of the battery The A123 cells are 60C (120C for below 10 sec...
  4. M

    Amp output confusion - newbie.

    It will make very little diffrence to speed or torque as this is dependent on motor and controller. Though you run the chance of the BMS tripping with a 30amp BMS limit IMO If your motor is 500W nominal (about 20amps)then would expect to see peeks to at least 30amps, depending on controller. (on...
  5. M

    New GoldenMotor Regen controller....

    Hi, Maybe a stupid question but for those that have bought this regen controler, does it come with the "Cruise Control" buttons? thanks.
  6. M

    SLA vs. LiFePO4

    I know this is slightly off topic RE SLA vs. LiFePO4, maybe it should be renamed Lead Vs lithium. I've been following altairnano batteries for a number of years now, I don't have the information at hand but I seem to remember they are talking +20-year life, many deep cycles ECT. The chemistry is...
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