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  1. W

    Is it safe to use a spare battery as a range extender battery (via charging port mod)?

    Very useful feedback, thank you Amberwolf. It is concerning knowing that the 10.5 amps that comes out of the extender battery is 3.5 times the amps that comes out of the wall charger (3 amps). Perhaps that's the reason I have never seen extender batteries for this scooter, that attach this...
  2. W

    Is it safe to use a spare battery as a range extender battery (via charging port mod)?

    I have a battery that lost half its charge, it holds the same power but simply stops working at the 50% charge. I suspect half of the cells are destroyed somehow due to going up a really steep hill after a long ride, I still don't really know why. Nonetheless, I was sent a new battery from my...
  3. W

    bad battery protection board or bad cells?

    Firstly I should mention that I don't really know anything technical about battery protection boards, all I know is that they help to maintain the battery in working condition. I opened up a scooter battery, a 33V, 6.5Ah Li-Po battery for the e-Twow S2 Booster, that I deemed dead because it was...
  4. W

    E-Twow Booster S+ reads an "E1" error

    I bought a used E-twow Booster S+ off E-Bay yesterday and am currently waiting for delivery. I won the auction at $240 including shipping. It's described as having an issue affecting the motor control and also the battery charges only to 90% so I'm not getting too excited yet. I am refurbishing...
  5. W

    Problem with E-Twow Booster - help?

    You probably broke the steel rod that locks into the notch on the front ears. This happened to me TWICE, and yes it always happens at a dangerous high impact moment. In the center of the rod there is a divot for a spring to attach into, it also serves as a terrible fracturing point dead center...
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