WALKENS House of Film

Wein Cell MRB400 (1.35V) Battery (RM400R & V400PX)

Wein Cell MRB400 (1.35V) Battery (RM400R & V400PX) - Main image
$8.28 $12 In stock

A hard-to-find camera battery required for many vintage cameras.

– Model MRB400 – Replaces RM400R & V400PX
– 1.35V Mercury-Free Zinc/Air Battery
– Brand new!

Required for:
– Spotmatic
– Spotmatic II
– Spotmatic IIA
– SP500
– SP1000

Some modern alkaline replacements will fit in these cameras, but the voltage will be incorrect causing exposure metering errors.
Grab one of these and be confident you have the perfect battery!

Ready to check out

Review the selected option and total at checkout.

Delivery to you

Allow time for the store to prepare your order before transit begins.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
Talking through a refund

Send the store your order number and the reason for your request.

Please contact us for the refund processing timeframe before returning an item.

View policy
Your shipping options

Choose from the delivery options available for your address.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Before you return a product

Check the conditions for your product before sending it back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (5.0 / 5 · 5 reviews)

Chloe ★★★★★

I was worried about finding a compatible battery for my Spotmatic II, but this zinc/air 1.35V cell dropped right in and the light meter reads perfectly. The mercury-free design is a nice bonus since I don't have to worry about disposal.

Riley F. ★★★★★

My old Spotmatic had been sitting on the shelf for years because I couldn't find the right power source. These 1.35V zinc/air cells drop right in and my light meter is reading accurately again, no adapter needed.

Timothy ★★★★★

Finally a battery that actually drops into my Spotmatic II without needing adapters or foil tricks. The 1.35V output is spot-on, and my meter is reading correctly again after years of guessing exposures. Zinc-air is the right call for these old cameras.