Ever Ready All Dry 1, AD1

Type Voltage Cells mAH use mA W mm H mm D mm Conn. Weight AD1 1.5 8 x D 50,000 100-400 64 133 64 A 0.77 Equivalents BB389, 1432, H1155, K756, ALLDRY 1, Alldry No.1 Photos Images Thumbnail Connector Older AD1 (From eBay) Later AD1 (From eBay)

Comments

Socket on top.

The 8 “D” size (U2) cells are in parallel in two vertical stacks of four cells. Using 8 cells in parallel gives somewhat more capacity than 8x as the internal resistance of the pack is 1/8th, but capacity is based on 1V end point for 1.4V filament valves (tubes) and 250mA nominal drain.

Replica

Use 4 off Alkaline D Cells in parallel (check that same date code, unused and condition good) for about the same or slightly more capacity.

Related Batteries

AD4, AD34