Question: are rechargeable batteries good for flashlights?
Answer: Nickel-metal Hydride (NiMH) - Rechargeable. People will often refer to "Eneloops", a specific, well-regarded brand of NiMH batteries. Good for frequently-used flashlights because you can reuse them rather than buying new ones all the time. They also don't leak, so you don't run the risk of damaging your devices.