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Exell Battery MRB400 Compatible with E400N, ANSI / NEDA 1116M, IEC MR42
Item Description
Exell MRB400 1.35V Mercury Replacement Battery - Replaces PX400, PX625, RM400, V400PX
Keep your vintage camera and precision light meter operating accurately with the Exell MRB400 1.35V Mercury Replacement Battery. Designed as a dependable replacement for discontinued mercury batteries, this zinc-air battery delivers a stable 1.35V output for classic film cameras, handheld exposure meters, and specialty analog equipment. Unlike many alkaline substitutes that may cause inaccurate readings, the MRB400 is engineered to closely replicate the voltage characteristics of original mercury cells for more reliable performance.
Built with modern mercury-free zinc-air technology, the Exell MRB400 provides a safer replacement option for legacy devices that require precise voltage. Ideal for photographers, collectors, repair technicians, and analog camera enthusiasts, this battery offers dependable power for classic equipment while helping preserve the accuracy and function your devices were designed to deliver.
Key Features
- Stable 1.35V output for accurate exposure readings and reliable meter performance
- Replaces PX400, PX625, RM400, and V400PX battery types
- Designed for vintage cameras, light meters, and specialty analog equipment
- Zinc-air chemistry provides consistent voltage during use
- Mercury-free design offers a safer modern alternative to discontinued mercury batteries
- Ideal for preserving the performance of classic film photography gear
Product Specifications
- Brand: Exell
- Model: MRB400
- Battery Type: Mercury Replacement
- Voltage: 1.35V
- Chemistry: Zinc Air (Mercury-Free)
- Diameter: Approx. 15.6mm
- Height: Approx. 5.95mm
- Rechargeable: No
- Shelf Life: Limited once activated (air-activated)
Ideal Applications
- Vintage film cameras
- Light meters and exposure meters
- Photographic equipment requiring stable 1.35V power
- Analog camera accessories
- Specialty electronics using PX400 or PX625 batteries
Ideal For
- Film photography enthusiasts
- Vintage camera collectors
- Professional photographers using analog equipment
- Camera repair technicians
- Photography hobbyists
- Light meter users and studios
Cross Reference Part Numbers
PX400, PX625, EPX625G, V625U, 625A, RM400, V400PX
How to Activate
- Peel off the protective tab before use
- Wait at least 60 seconds; a few minutes is recommended for best performance
- Insert the battery into the device with correct polarity
- Air activates the zinc-air chemistry once the tab is removed
- The battery begins draining after activation, even if not installed right away
Pro Tips
- Do not activate until you are ready to install the battery
- Store at room temperature
- Keep sealed until use to preserve shelf life
Why Choose the Exell MRB400?
The Exell MRB400 is an excellent choice for users who need a precise 1.35V mercury battery replacement for vintage cameras and light meters. With stable zinc-air chemistry, broad compatibility, and a mercury-free design, it helps maintain the accuracy and dependable performance required by classic analog equipment.
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About Us
About BatteriesInAFlash
BatteriesInAFlash with 20 years of trusted service, is your solution for batteries and power accessories. Our vast selection covers everything from watches to automotive batteries, including batteries for equipment like golf carts, RVs, marine, motorcycles, scissor lifts, floor machines, and solar systems. We also carry batteries for PLC, Door Locks, Emergency Lighting, Slot Machines, Hospitality, and more. Our range extends beyond batteries to include battery cables, solar panels, inverters, and charge controllers. We stock top brands including Trojan, U.S. Battery, Homegrid, Saft, Omnicel, Exell Battery, Antigravity, Fullriver, Interstate, K2 Energy, and more. We are committed to providing top-notch products and excellent customer service. We carry a complete line of batteries and serve all consumer electronic, commercial, industrial, military, and government needs.
Payment
Payment Options
Paypal is the preferred method of payment. We also offer the ability to pay with a credit card through Authorize.net during checkout. All orders must be paid in full before shipping. Any orders that are not will not be shipped until payment is made.Taxes
Nevada sales tax of 8.375% will apply to orders shipped to an address in the State of Nevada.
Shipping
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We make every effort to get your order to you in a flash. In-stock items are shipped if the order is received before 1 pm PST. Please note that orders made after 1:00 PM (Pacific Standard Time) will be entered the next day. Weekend orders (from Friday after 1:00 P.M.) will be processed on Monday. If there is a problem with your order, you will receive an e-mail within one business day to advise you about the situation.
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All orders shipped within the United States, including Hawaii and Alaska, are sent using USPS unless the customer requests otherwise. All USPS orders within the United States are sent with USPS Delivery Confirmation. You can click on the link to learn more about Delivery Confirmation.
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Returns
Returns & Exchanges
All of our items come with a 30-day money-back guarantee (except S&H charges) if unopened. We will replace any lost or damaged items if you choose insured shipping. You must contact us to request a return authorization or RA#. We do not accept back returns without an RA number. We will try to correct your order in a reasonable amount of processing time. If it is determined that there is an error due to a listing, product description, or cross-reference error on our part, we will reimburse shipping fees for the return and ship a replacement part at our expense. A 15% restocking will apply for all non-defective returns or items purchased in error. No shipping fees are reimbursed. If you have any questions regarding our policies, please contact our Customer Service Specialists Toll-Free at (800) 515-2423.
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Customer Service: Here to Power Your Needs
Welcome to our customer service center, your one-stop solution for all battery-related queries and needs. Whether you're looking for a specific product, need assistance with cross-referencing, or simply want to confirm your selection, our experienced team is here to help. With over 80 years of combined experience in the battery industry, we possess the expertise to answer your questions and cater to your needs efficiently.
- We proudly offer an extensive catalog of over 5000 SKUs and products. Whatever your battery requirement, chances are, we have it.
- Our team is capable of crafting custom battery packs or repairing old ones as per your specifications. This special order service ensures your unique needs are always met.
- We believe in serving all customers with the same dedication and enthusiasm, no matter the size of your order. Both small and large orders are welcome.
- We cater to a diverse range of sectors - consumer, educational, commercial, industrial, and military. This broad experience equips us to handle a wide variety of procedures and requirements
We are more than happy to discuss discounts and special shipping arrangements that could benefit you. All you need to do is ask!
We're here to assist you:
- Office Hours: Monday-Friday 8am-6pm, Saturday-Sunday 9am-4pm PST
- Toll Free: 1-800-515-2423
- Phone: 1-702-248-2423
- Fax: 1-702-248-2623
Our commitment is to provide you with an unparalleled customer service experience. We look forward to powering your needs!
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