Replacement 3.6V rechargeable battery pack for various vintage HP calculators: HP-35, HP-45, HP-55, HP-65, HP-67, & HP-80. The battery pack is manufactured using fresh Tenergy brand 1000 mAh NiCd cells, including custom nickel V-shaped terminals, welded in-place. Note: Use of NiCd cells is ideal since the original HP batteries were also were manufactured with NiCd cells and do not pose potential charging complications with higher energy NiMH cells. Perfect fitment in HP calculators! See pictures! Please note, the image showing the HP-45 calculator is for demonstration purposes only. No calculator is included in the sale.
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