Thank you for your continued patronage of ww5’s products.
ww5 has transferred its micro primary battery business to Maxell, Ltd., effective March 1, 2026.

Following the business transfer, products bearing the ww5 logo may continue to ship for some time. However, Maxell, Ltd. will provide product support as of March 1, 2026.

Environmental and transportation documentation for micro primary batteries purchased from ww5 prior to March 1, 2026, is available below.

We sincerely thank you for your many years of support for this business.
We look forward to your continued patronage of ww5.