Originally posted by Roil
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OK say we have 4S2P as pictured above. Conventional method would require 8 Cell Boards connected with 4-cells per charger. Each string will not charge at the same rate. One would be charged before the other thus requiring a second charger or control which is expensive and a poor solution that does not work well. The Alternate method is what Lithium batteries use paralleled at the cell level, not string level. Regardless if it is 4S2P as shown, or 4S99P only requires 4 cell boards and one charger. Otherwise you would need 396 cell boards and 99 chargers if you used Conventional. Good luck with that DYI.
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