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Firetrol C-652 24VDC Battery Charger

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Repair Price: $ 936.00

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CSL Part Number: 54214
Product Overview: The Firetrol C-652 (also CG-0652) is a 24VDC battery charger designed to maintain standby batteries in fire pump control systems and similar critical applications. It converts AC line voltage to regulated DC output, automatically adjusting charge current and detecting when batteries reach full charge. The unit features a control PCB with voltage regulation circuitry, current-sensing power resistors mounted to a heat sink, rectifier bridge, protective fusing, and LED indicators for charge status. Common in fire protection systems where reliable battery backup is essential for emergency operation.
Category: Battery Charger
Manufacturer: Firetrol
Manufacturer Synonyms: Emerson
Manufacturer Part Number: C-652
Also Known As(AKA): CG-0652

Common Failures

Several incidents have been reported where the product failed to charge properly. Common failure modes include defective components such as integrated circuits, rectifier diodes, and power resistors. In one case, a previous repair attempt led to further damage, including burnt resistors not properly mounted to the heat sink.

Repair Approach

Repairs typically involve replacing failed components, such as diodes, resistors, and ICs. In certain cases, mechanical integrity was restored by reassembling or reinforcing the terminal block. Circuit traces on the control board were also repaired where necessary. Incorrect component replacements from previous repair attempts were corrected, ensuring proper installation with thermal paste for heat dissipation.

Testing & Evaluation

Repaired units are tested to confirm functionality, including successful charging from low voltage to full capacity and proper operation of indicator LEDs. In some instances, units may be found Beyond Economic Repair due to unidentified root causes or failure during extended testing.

Service and repair your broken Firetrol part


We can repair your Firetrol model C-652 in our facility. Let our skilled technicians get your Firetrol back in operation quickly.


Step 1 - Click the green 'Repair Now' button above to add the part and then complete the RMA.

Step 2 - The RMA form will be sent to you via email. Print the RMA form and put it in a box with the item(s) for repair.

Step 3 - Ship or mail the box to the address listed on the RMA.

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