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Drydex Power Unit DM501

Drydex Power Unit DM501; Chloride Electrical (ID = 1530124) Power-S
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Drydex Power Unit DM501; Chloride Electrical (ID = 1530124) Power-S
Chloride Electrical: Drydex Power Unit DM501 [Power-S] ID = 1530124 713x721
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For model Drydex Power Unit DM501, Chloride Electrical Storage Company Ltd; London:
Extensively Edited and enlarged from a photo of a Radio.
Country:  Great Britain (UK)
Manufacturer / Brand:  Chloride Electrical Storage Company Ltd; London
Year: 1946 ?? Category: Power supply/conditioner or battery or charger 
Wave bands - without
Power type and voltage Is a battery or storage battery / 67.5 Volt
Loudspeaker - - No sound reproduction output.
Power out
from Model: Drydex Power Unit DM501 - Chloride Electrical Storage
Dimensions (WHD) 67 x 92 x 35 mm / 2.6 x 3.6 x 1.4 inch

Connector type: "S" (Snap like PP9)

45 off Layer type cells (stacked "biscuits") F40 size slightly larger than F22 (about 24 x 6.7 x 16mm each).


  • UK Ever Ready B101
  • GEC: BB501
  • Vidor: L5500
  • Varta Pertrix Mikrodyne Nr. 57
  • Eveready / NCC 467 (Max 71 x 94 x 35, possibly includes snaps)
  • Others: RCA VS016, Neda 200, 45F40, 08, 145X, 501, 1734, 4367, A467, BA51, KL1, S101, XX45

About 460mAH capacity.

Used in "Personal" radios with one "D" cell for HT, or larger sets with a larger LT arrangement and also instruments.

US equivalents likely 1939 release.

Net weight (2.2 lb = 1 kg) 0.340 kg / 0 lb 12 oz (0.749 lb)

Model page created by Michael Watterson. See "Data change" for further contributors.

All listed radios etc. from Chloride Electrical Storage Company Ltd; London
Here you find 32 models, 25 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.