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October 7, 2013

Tektronix™ Battery Pack replacement Intelligent Module PST- 25-005GF

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4 amp, 16-24 cell battery charger
More NiMH and NiCad Chargers


This is a custom designed battery pack monitor and charging board for 12 VDC, NiCad, 4.4 AH, 10 cell battery pack.

It is used in the battery packs for Tektronics oscilloscopes. The markings on the board are 25-005-GF and S168.

Note: when rebuilding a Tektronix battery pack make sure all the cells are good, none are shorted, and that they are all at the same state of charge. Discharging to 1 volt per cell is an easy way to do this, or fully charge them.

The main failure mechanism for these boards is that one cell will be shorted or flat and the power control transistor burns out because it is dropping more voltage than it is designed for.
 Model Chemistry Number of Cells this board manages Price
PST-25-005GF NiMH or NiCad 10 cells $75.00
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This module is a drop-in replacement for
250-005 250-005A 250-005AF 250-005B 250-00BF
250-005C 250-005CF 250-005D 250-005DF 250-005E
250-005EF 250-005F 250-005FF 250-005G 250-005GF


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