I didn't know what that meant: a 'wider top', but no, the batteries, from the store TOY (led-fan or some such) they seemed normal, and my stock didn't have any special chemical designation or 'super capacity's labels, just plain old metal-hydride rechargeables.
No calipers in shop, but I have good eye-judgement, from previous draftsman work free-hand.
(Drugstore shelves helping to supply electronics, as Radio Shack been closed).
I'm suspicious because both items were abnormal, so started thinking how factory capacity, overnight, is sometimes used, to make 'grey area' products, often skipping regulatory steps and various tax requirements. You make product, ship it, and run w the cash...ACME TOIY Co. You can sometimes spot other things like typos.
Wish I kept that, couple years have passed.