Photo 1 of (2-Pack) 2/3AA600 3.6V 600mAh Ni-MH Battery Pack, with Square-Hole Plug only fits Eton FRX3 0000101 Newer Square-Hole Verson (Don't fit Eton FRX3 Earlier Round-Hole Verson, Don't fit Eton FRX3+)

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Photo 1 of (2-Pack) 2/3AA600 3.6V 600mAh Ni-MH Battery Pack, with Square-Hole Plug only fits Eton FRX3 0000101 Newer Square-Hole Verson (Don't fit Eton FRX3 Earlier Round-Hole Verson, Don't fit Eton FRX3+)Photo 2 of (2-Pack) 2/3AA600 3.6V 600mAh Ni-MH Battery Pack, with Square-Hole Plug only fits Eton FRX3 0000101 Newer Square-Hole Verson (Don't fit Eton FRX3 Earlier Round-Hole Verson, Don't fit Eton FRX3+)