MR-9

The MR-9 Adapter replaces the PX13 and PX625 Mercury batteries used in many collectible cameras and older photographic equipment.

• Uses a Readily Available Silver Oxide 386 Battery
• Installs Into Camera or Meter the Same as the Original Battery
• No Requirement for Additional Modification is Necessary
• Micro-Circuitry Reduces Voltage to Meet Original Specifications

H-B

The H-B is for use with the Pentax Spotmatic.

• Uses the Readily Available Silver 377 Watch Battery
• Micro-Circuitry Reduces Voltage to Meet Original Specifications
• No Requirement for Additional Modification is Necessary
• Replaces the Battery Cover, Place the New Battery Inside, Screw in H-B
• A One Time Purchase; Lasts a Lifetime with Normal Use

HM-4N

The HM-4N is the solution for discontinued PX32 mercury battery.

• Uses the Readily Available Silver PX28 or E544 Battery
• No Requirement for Additional Modification is Necessary
• Installs Into Camera or Meter the Same as the Original Battery
• A One Time Purchase; Lasts a Lifetime with Normal Use

V27px

The V27px is the solution for discontinued PX27 mercury battery.

• Uses 4 Silver 386 Batteries
• No Requirement for Additional Modification is Necessary
• Installs Into Camera or Meter the Same as the Original Battery
• A One Time Purchase; Lasts a Lifetime with Normal Use

Lithium batteries can also be used with the MR-9, HM-4N and V27px however, our research indicates that the silver type will not show a drop in voltage until the battery is used up and the Lithium type will drop proportionally over time of use.