The HP-35 rebuilt battery 82001B fits all HP Classic family of calculators: HP-35 (all versions), HP-45, HP-55, HP-65, HP-70, HP-80. The battery has been rebuilt using an original battery shell and contacts and new NiCd 1000mAh cells. The battery offers roughly 2 1/2 more charge than an original HP battery.

In addition, the battery can be used in the HP-75 calculator also.

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