Am I understanding that this is to be a "rescue" boat for your faster boats? If so, I'd throw something like this in it. You shouldnt need that much mah for rescue purposes only. you can probably go out 5-6 times with this 5000 mah nimh. Also a decent nimh batt should charge up to 1.35 volts would would give you 10.8 volts on this 8 cell. If you need more mah just get two. Good price .
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