short answer, Yes.long answer, yyyyyyyyyyeeeeeeesssssssss.** Keep in mind because of kirchhoff's current rule, that the current flowing through all the series batteries will be equal. So the most amps you can safely draw will depend on how much current the weakest battery can deliver.* Also keep in mind that recharging rechargeable batteries in series is not a good idea without some way to keep the batteries "balanced." If the batteries are unequal in ESR or capacitance (which they will be even if they are the same type and stuff) than charging them in series can result in one charging faster than the other, leaving one not topped off and the other pontenially overcharged. In the same way, one or more cells in the series can end up over discharged if they the battery packs are not perfectly matched.