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  1. D

    New 48v pack only charging to 51v

    I just bought a new 14ah 48v li-ion pack from an ebay seller that I've used before (with good feedback). My prior two purchases were for 10ah 48v packs, which work as they should. The new 14ah pack only charges to 51v. I only used it for one ride, taking it down maybe 25% before recharging...
  2. D

    Upgrading to 48v controller for Crystalyte 409

    My hub motor is a Crystalyte 409, and I need advice on upgrading my 36v controller to a 48v unit, to match my 48v battery pack. I have a twist-grip throttle and am wondering if I will need a new throttle also. The present controller is rated at 36v/20A. I attached a photo of it. Any...
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