The CTEK PRO25S 12-volt professional charger, part number 40-328, provides a purpose-built connection, charging, testing, protection, or mounting solution for compatible 12-volt lead-acid and LiFePO4 batteries. Match the exact electrical interface and product compatibility before ordering.
Key Features
- CTEK PRO25S:12 V: WET, MF, Ca/Ca, AGM, EFB, GEL, LiFePO4.
Fitment
| Fitment Type | Universal by exact battery, charger, connector, or dimensional compatibility |
|---|---|
| Compatible Application | compatible 12-volt lead-acid and LiFePO4 batteries |
| Vehicle YMM | Not assigned because compatibility is determined by the electrical or equipment interface |
Specifications
| Manufacturer | CTEK |
|---|---|
| Manufacturer Part Number | 40-328 |
| Product Type | Battery Chargers |
| Compatibility Basis | compatible 12-volt lead-acid and LiFePO4 batteries |
What's Included
- One new CTEK PRO25S 12-volt professional charger identified by part number 40-328
- Only the cables, connectors, mounting pieces, and accessories expressly listed for this exact part number
About CTEK
CTEK develops battery chargers, maintainers, onboard charging equipment, power-management products, and compatible connection accessories. Correct selection depends on battery chemistry and capacity, electrical ratings, connector type, charger family, and exact manufacturer part number.
Related CTEK Products
- CTEK PRO25SE Battery Charger - 50-60 Hz - 12V - 19.6ft Extended Charging Cable
- CTEK Battery Charger - US 0.8 - 12V
- CTEK CS FREE Portable Battery Charger - 12V
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Frequently Asked Questions
How do I confirm this charger is suitable for my battery?
Confirm the battery voltage, chemistry, capacity range, required charging program, connection method, and the exact CTEK part number. This product is intended for compatible 12-volt lead-acid and LiFePO4 batteries.
Can the charger remain connected for maintenance?
Use only the maintenance function and connection method stated in the CTEK manual for this exact model. Confirm ventilation, temperature, battery condition, and terminal polarity before unattended maintenance.
What should I check before charging?
Inspect the battery for damage or freezing, verify polarity and terminal condition, confirm the selected program matches the battery chemistry, and follow the exact CTEK operating manual.
Installation Instructions
Read the CTEK instructions for the exact part number before installation. Disconnect power where required, verify polarity and electrical ratings, secure every terminal and connector, route cables away from heat and moving parts, and confirm correct charger operation before leaving the system unattended.
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