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  1. C

    Stuck - Upgrading Battery from 36V to 48V on Ecotric Rocket

    Thanks to all for your great insight. I am able to get an S900 model from Ecotric that is specifically matched to the Controller I have. So I have ordered it and am going to go that route. I am also able to return the other S900 I bought, I will let you know the outcome of buying the matched S900.
  2. C

    Stuck - Upgrading Battery from 36V to 48V on Ecotric Rocket

    Hi All, After a lot of reading and attempts, Im stuck trying to upgrade my Ecotric Rocket ebike from its original 36V 12.5ah Battery to a new expanded 48V 20ah battery. I have tried a lot. Here is the history. I have an Ecotric C-ROC26S900-BL that I have had for 2.5 years (36V, 12.5ah, 500W...
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