Best D Batteries on Sale

Woot's Energizer Batteries and More sale covers a wide range of battery packs, including a 48-count pack of Energizer MAX AA batteries for $19.99 and an 8-pack of Energizer MAX D batteries for $4.99. The sale also includes options from Rayovac, Fuji EnviroMax, and Amazon Basics, with the Amazon Basics hearing aid batteries dropping to $3.99 for a 60-pack. This deal ends July 31. Shop Now at Woot! An Amazon Company

This battery tester drops to $4.74, down from $5.93. It supports AA, AAA, C, D, 9V, and 1.5V cells, including rechargeable batteries, with an LCD readout. Shipping is free on Amazon Haul orders of $25 or more. Shop Now at Amazon

A replacement power supply specific to Epos DW, SD, and D 10 series headsets, so it's mainly useful if you've lost or damaged the original and need an exact match. At $35, it's $3 off the $38 list price. Buy Now at Newegg

A straightforward way to replace a lost or failing power adapter for compatible D-Link surveillance cameras without buying a new camera altogether. Buy Now at Newegg

A reliable pick if your D-Link router or hub lost its original adapter, since finding a compatible 12V 2A replacement can otherwise mean waiting on a manufacturer order or paying more through official channels. Buy Now at Newegg

A straightforward replacement adapter for anyone whose D-Link router or hub has lost its original power supply, saving you from buying a whole new device just because the brick died. Buy Now at Newegg