Duracell Rechareable Red Light I Have A SONY Digital Camera That Needs Rechareable Batteries Do I Have To Stick With Sony Rechareables?

I have a SONY digital camera that needs rechareable batteries do I have to stick with sony rechareables? - duracell rechareable red light

No longer claim the old man and Duracell and Energizer, and Rayovac batteries produce similar - they are nickel-metal hydride such as my Sony but my show typical 2100mAh instead of 2500mAh - What does this mean?
Can I use my charger from Duracell Sony or is it a no-no?
Thanks