Can you recharge alkaline rechargeable batteries in a NIMH charger?

While it is possible with some, but not all NiMh chargers, it is not recommended. Charging alkaline batteries can make them leak chemicals. Only attempt this if you are experienced with electronics and are willing to deal with leaking batteries. The batteries often leak while being recharged, but sometimes they leak later in the device they power. Even if they do recharge, you will probably only get about 5 cycles. I would highly recommend that you get some NiMh batteries. They only cost about 6 times as much as alkalines, but they can be recharged hundreds of times.