I love the Lenmar Rechargeable batteries. I never used the packaged Panasonics. Who knows how much life they got left sitting in there.
The Lenmar Rechargeables are 1.5v, not 1.2. They will quickly drop voltage when they need recharging so it'll be completely dead. it has 2000mAh and lasts a long time. The best thing is they put out 1.5v.
Toshiba TLP-650, Infocus 4805, Panasonic AE2000, JVC DLA-RS400U
HK AVR-8000, Yamaha RX-V681BL, Sansui (yes they were awesome)