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  1. R

    Proper SLA battery charging

    Just got myself another ebike and it came with 60V 20ah SLA batteries. Question is what is definitive maximum charging voltage of the typical 12V 20ah batteries that are sold today? Is it 13.5V or 14.7V when the charger turns green? I have seen chargers that say that it fully charges at 14.7V...
  2. R

    BMS question

    I just thought of this a while ago.... is it possible to use a 16S Lithium ion BMS on a 13S lithium ion pack so there are 3 extra wires that are free? Similarly, is it possible to use a 20S 72V BMS on a 13S pack? its an exercise if I want to expand the pack from 48V to 72V without making a new...
  3. R

    Lifepo4 prismatic cut off voltage question

    I have been using this 16S (58.4V) 20ah chinese prismatic lifepo4 (encased in aluminum) for more than 6 months now and for the most part, I like it except that the BMS that was originally installed has a rather high cut off voltage of 48V (or 3V per cell). My question is, will installing a BMS...
  4. R

    54.6V charger on a 58.4V lifepo4 pack

    Can anyone clear this up for me? The Lifepo4 pack I bought from a store here in the Philippines is 48V 20Ah but came with a 54.6V charger.... It does work but I know it does not charge to full charge at 54.6V (@3.4V per cell) when full charge voltage for each cell is 3.6V, or 58.4V. The seller...
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