Asahi Pentax Spotmatic Battery Recommendations [2022]

Written By: Amy S. Dumas

I’ve used my Asahi Pentax Spotmatic camera pretty heavily since I got it, and in the time I’ve owned it, I’ve gone through three batteries.

The good news is that they’re easy to replace, so if you have this camera, or are thinking about getting one, it can be helpful to know what type of battery it takes, and where you can get replacements.

In this article, I want to give you my recommendations on where to find replacement batteries for your Asahi Pentax Spotmatic camera.

Which Battery Should I Buy?

A question that I get asked fairly often is which type of battery to buy. This really depends on your needs. But if you’re looking for a battery that will last a very long time and is designed to be left in your camera for extended periods of time (such as when it isn’t being used).

I highly recommend WEIN Cell or Lenmar batteries. These are extremely high-quality batteries that can be expected to work very well over long periods of time.

The only downside is that wein cells do cost quite a bit more than other options, though they can pay for themselves in extended use or decreased consumption from not having to change them out so frequently.

If you don’t need these qualities as much or want to save some money, consider one of these options: Don’t forget about rechargeable options!

Best Asahi Pentax Spotmatic Battery

Asahi Pentax Spotmatic Battery Recommendations

Choosing the best Pentax Spotmatic battery can be hard, especially if you aren’t sure what to look for or which brands are the most reliable.

There are several things to keep in mind when choosing the right Pentax Spotmatic battery, such as battery life, voltage, and whether it’s rechargeable or single-use.

In order to help you choose the best Pentax Spotmatic battery to meet your needs, here are some of our top recommendations.

1. Weincell MRB400 1.35V

The Weincell MRB400 Z400PX PX400 EPX400 RM400 is a high-quality, reliable battery. Each battery has been tested and certified to ensure that it meets its advertised capacity, which means you can be sure that your camera will power up every time you need it to.

This is recommended for Pentax Spotmatic SP, Spotmatic SPII, Spotmatic IIA, SP500, SP1000.

InformationDetails
BrandHeani
Unit Count 1 Count
Voltage1.35V
ReusabilitySingle Use

2. Exell Battery MRB400 fits Pentax Spotmatic, II, IIA, SP500, SP1000 Cameras 1.5V

  • Voltage: 1.35, Amperage: 60mAh, Chemistry: zinc_air
  • Length: 0.140, Width: 0.440, Height: 0.140, Diameter: 0.44
  • PX400

This is one of those odd batteries that doesn’t really have a name, and it’s one of my favorites. It fits in most vintage cameras, including all of my Pentax somatics, without modifications. It holds its charge well, though it isn’t as long-lasting as some other batteries (it isn’t supposed to be). In fact, since I started using these batteries more often I haven’t had any problems with a drain at all.

InformationDetails
BrandExell Battery
Unit Count 1 Count
Voltage1.55 Volts
ReusabilitySingle Use

3. Lenmar Replacement Battery for Pentax Spotmatic 500 Spotmatic II Rechargable

  • Fits: Pentax Spotmatic 500, Spotmatic II, RadioShack 63-5034
  • Replaces: Gold Peak GP192
  • 1.5V / 30mAh
  • Alkaline
  • 30 Day Warranty
  • Watch or calculator battery replacement
  • Compatible with devices requiring a LR41 (192) battery
  • 1.5 volt 30 mAh alkaline cell battery
  • 1 per pack
  • 30 day manufacturer's warranty

I own one of these, and I’ve been very happy with it. Not only is it rechargeable, but it seems to last a long time on a single charge as well. The main drawback is that you have to unscrew two screws on your camera in order to install it—which isn’t hard, but if you aren’t confident in your technical abilities, then you may not want to buy one of these batteries.

InformationDetails
BrandLenmar
Unit Count 1 Count
Voltage1.5 Volts
ReusabilityRechargeable

How do I know which battery is good?

I look at two things when determining whether a battery is good or not: first, I look at how many times it’s been used—if it’s been used more than ten times but less than 100, that means it should be fairly new and should work fine.

If I don’t know how many times it’s been used, I check to see if there are any visible dents in the battery. This will tell me if it has ever taken a hit; these dents can negatively affect your camera’s performance, so you definitely want to make sure they haven’t occurred before putting them into your camera.

Final Words

If you own an Asahi Pentax Spotmatic camera, you know how frustrating it can be to find the right replacement battery that actually works properly.

Some of them don’t hold their charge as long as they should, and others don’t fit properly in the battery compartment of your camera, resulting in damage to your Spotmatic when attempting to replace them.

Originally published: February 26, 2022 , Last updated: February 26, 2022
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