@norbi not a good idea just connecting it to the battery. You are bypassing the whole charging circuitry which controls rate of charge/ over charging etc. I would connect it to where the old port is. Post some imgaes that show the whole PCB and the micro USB port.
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=== Update (11/04/2016) ===
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I'd connect the positive to where the positive from your connector was. [image|938014]
@norbi not a good idea just connecting it to the battery. You are bypassing the whole charging circuitry which controls rate of charge/ over charging etc. I would connect it to where the old port is. Post some imgaes that show the whole PCB and the micro USB port.