Alkaline batteries should never be charged. It should never even be attempted, as they could easily explode.
Battery chargers will explode alkaline batteries. Impart this is because the chargers are built for NiCad and charge at a high rate.
I have recharged DuraCell Copper Top batteries, or other high end batteries, with good results under certain conditions.
>I can not get energy back into low cost batteries. Use Copper Top
>You can not let the battery totally discharge. If you take out 10% of the power, you can put it back in, many times.
>Keep the charge current very low.
>Limit the charging voltage. This is critical.
A friend built a test rig that, every day, discharged a D cell copper top to 90%, then put back in 20% of its rating over the next 23 hours. This repeated for 8 months until the power went out during a discharge and totally discharged the battery and ended the experiment. By using the top 10% of the battery he got 240 cycles.
Before that I was using 9V copper tops in wireless microphones. Each week we used 25% of the battery. In four weeks the microphones would fail. The charge cycle put 50% of the rated current into the battery over 7 days. I got 52 weeks of service from these batteries. Every year I replaced the batteries and they only held 50% of the energy as a new battery. I understand they are still using these charges 15 years later. (The charger used pulse charge mode, low current, and very accurate voltage limiting)