Is there not information on the cell or on a the manufacturer website?
In the case of a very high capacity NiMH AA such as this I would limit the charge current to 1.5A and ensure your -dV termination is 0 to 3mV per cell and your max capacity is no more than 120%. 3000mAh really pushing the limits on capacity and the cells probabaly wont be that good in terms of cycle life or self discharge. Cell design is all about trading performance factors. If you want high capacity then you trade away other desirable traits. It's not all about mAh.
Neil
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