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The 1.35 V Zinc-Air Battery from WeinCell is a mercury-free alternative for the RM400 and V400PX batteries.
UPC: 750062011123
Wein W9901241 Specs
Model
MRB400
Chemistry
Zinc Air
Output Voltage
1.35 VDC
Packaging Info
Package Weight
0.03 lb
Box Dimensions (LxWxH)
3.6 x 2.7 x 0.35"
Wein W9901241 Reviews
Excellent mercury-battery replacement for Asahi Pentax
By John R
Rated 5 out of 5
Date: 2025-08-14
Very pleased with this MBR400 version of the popular Wein cell. Opened it, let it sit in free air for 30minutes to activate, put it in my ancient Pentax and started shooting. Just got the first roll of scans back and the metering was obviously correct.
Works.
By Chavis
Rated 4 out of 5
Date: 2023-06-27
What more can I really say about a battery?
It does work, and that is good.
I hope it continues to work.
See any errors on this page?
will this battery replace the px640 1.35v ...
will this battery replace the px640 1.35v batteries for my Canon Canodate E? im not sure if the size is right?
Asked by: Johan
No but you can use this Excell A640PX: https://bhpho.to/4bLV8Xr
Answered by: Dan W
Date published: 2024-05-22
Hello, I just bought a Yashica Minister-D camera, ...
Hello, I just bought a Yashica Minister-D camera, will this battery work? The old battery is a Kodak kx13 1.35v.
Asked by: Nicolas
You will need the 625 button battery. Click the link below to view;
https://bhpho.to/2Ocmopfl
Answered by: Rob
Date published: 2020-07-08
will this work in a Leitz/Leica/Minolta CL ?
will this work in a Leitz/Leica/Minolta CL ?
Asked by: Dennis
The replacement battery would be the Wein MRB625 1.35V Zinc-Air Battery (B&H # WE625), instead of the Wein 1.35 V Zinc-Air Battery (B&H # WE400).
Answered by: Michael S
Date published: 2024-07-05
Will this battery work for an older Pentax ...
Will this battery work for an older Pentax spotmatic film camera? Thanks, Suzette
Asked by: Suzette
Yes, that battery is compatible with a Spotmatic camera.
Answered by: Boyd H
Date published: 2023-06-21
Does this battery work for an Olympus Om-1?
Does this battery work for an Olympus Om-1?
Asked by: Kimberly
The Wein 1.35 V Zinc-Air Battery is not a compatible battery for the OM-1 film camera. This is a compatible battery for the OM-1: bit.ly/3U3Kwxu
Answered by: Boyd H
Date published: 2024-01-19
Will this battery work for Nikon FM?
Will this battery work for Nikon FM?
Asked by: Frederic
The Wein 1.35 V Zinc-Air Battery will not work in the Nikon FM. You need two Energizer LR44 Alkaline Button Cell Battery. Here is the link: https://bhpho.to/3bK67Yl
Answered by: Lawrence C
Date published: 2022-08-11
Does the battery take time to activate as it says ...
Does the battery take time to activate as it says on the box? I'm a bit confused
Asked by: Saar
There are air holes under the tab only about 5 min it dose increase the life