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12v

  1. Sizing DC-DC convertor

    Technical Discussion
    This info must be here somewhere, please point me to the old thread... I am using a Leaf battery pack ~400V, and need to buy a DC-DC converter for the 400v-13.9v. I will be using a 12v lead acid battery as it is needed to turn on the contactors. I have put together a list of the cars current...
  2. 12 Volt Accessory Battery recommendations

    NZEVA
    Hi there, My 12 volt accessory battery in my Sera EV is dying mainly due to high draw from vacuum brake pump. The battery is standard 12 volt lead acid car battery about 45ah. It is dying due to high draw and is charged by the alternator which works only when EV is driving. This has lasted well...
  3. For Sale: Valence U24-12RT - $1,500 obo

    Classifieds
    Part of a lot of unused Valence batteries given to a research group for evaluation. Sorry to be vague but the batteries were obtained legally, can be sold legally, and are in great shape. Asking for $1500.00 plus shipping, list price was 2,030.00; we don't need them and they are just taking up...
  4. For Sale: Valence U27-12RT - $2,000.00 obo

    Classifieds
    Part of a lot of unused Valence batteries given to a research group for evaluation. Sorry to be vague but the batteries were obtained legally, can be sold legally, and are in great shape. Asking for $2000.00 plus shipping, list price was 2,550.00; we don't need them and they are just taking up...
  5. For Sale: 12 * 12V 250ah AGM batteries for sale

    Classifieds
    I have 12 * UPG 12V 250ah AGM batteries for sale. In total this pack is 36.6kWh, I am willing to split this battery pack up. I originally bought this 4 years ago to complete my senior design project in college and am no longer in need of it. I used it for a few months to complete a design of a...
  6. Do I need a DC-DC?

    Batteries and Charging
    Hey guys, I'm in the middle of my 48V Lithium electric motorcycle build and I'm pretty sure that road rules in Australia require a separate battery for the 12V system so you can still run hazard lights etc if the main pack quits. I'm wondering whether you guys think I will need a DC-DC converter...
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