The UK's No.1 battery brand offers reliable, long lasting power for everyday devices you use most like toys, clocks, radios, remote controls, smoke alarms and torches. With our new and improved formula Duracell Plus lasts longer, much longer. Duracell has also introduced colour coding on our batteries as well as the packaging, to help you remember which size you need. Duracell D Alkaline Batteries (2) Alkaline General Purpose Battery, ideal for portable radios, toys and doorbells etc. Qty. 2 Pack.