The CTEK PRO25S-8 Step Battery Charger is built for automotive professionals who demand power, precision, and protection in one portable package. Delivering a steady 25A through an intelligent 8‑step charging process, it charges securely and quickly across a wide range of 12V batteries, from everyday lead‑acid to modern LiFePO4 chemistry. Whether you’re in a workshop, showroom, or on‑site diagnostics, the PRO25S-8 keeps batteries healthy and vehicles ready.

Why the PRO25S-8 stands out

• 8‑step charging algorithm combines speed with safety, tailoring the charge to each battery type to maximize longevity while minimizing heat and ripple.
• Dedicated LiFePO4 mode supports LiFePO4 (LiFePO4) packs with precise voltage targets (13.8V/14.4V/13.3V) and up to 25A max current, so you can treat modern EVs and 12V Li‑packs with confidence.
• Lead‑acid reconditioning programme revives tired or flat batteries, extending service life and reducing premature replacements in the shop or showroom.
• SUPPLY mode powers the battery while you run diagnostics or fault‑finding tests, helping you locate issues without the battery being a variable in your workflow.
• Safety at the core with spark‑proof connections, reverse‑polarity protection, and integrated protection against low voltage and current ripple—protecting both the battery and delicate vehicle electronics.
• Rugged, yet portable design with a tough casing that withstands busy workshop environments, plus a lightweight overall footprint for easy handling and transport.
• Temperature sensing built‑in to optimize charging performance across the range from -20°C to 50°C, ensuring consistent results anywhere you work.

What it can do for you

Designed to support a broad spectrum of 12V vehicle batteries, the PRO25S-8 covers both traditional lead‑acid chemistries and newer LiFePO4 packs. Its versatility makes it ideal for:

• Professional workshops that service fleets, vans, and customer cars with mixed battery chemistries.
• Showrooms that require reliable, ready‑to‑display batteries for demonstrations and trials.
• Diagnostics and fault‑finding scenarios where you need a stable power source without influencing vehicle electronics.
• Maintenance routines that prevent deterioration in stored or seasonal vehicles.

Key specifications at a glance

• Battery types: 12V lead‑acid (WET, MF, Ca/Ca, AGM, EFB, GEL) and LiFePO4
• Output and voltages: 14.4V/15.8V/13.6V for lead‑acid; 13.8V/14.4V/13.3V for LiFePO4, up to 25A max
• Battery capacity range: Lead‑acid 40–400Ah; LiFePO4 30–450Ah
• Start voltage: 2.0V
• Ripple: < 4% for safe vehicle electronics
• Charge and mains cords: 2000 mm DC cable, 1900 mm AC cable
• Ambient and use: -20°C to 50°C, IP44 for outdoor/workshop reliability
• Portability: Net 1.8 kg; robust, impact‑resistant casing
• Power input: 220–240VAC, 50–60Hz, 2.9A max
• Warranty: 2 years

Who is this ideal for?

The PRO25S‑8 is tailor‑made for professionals who need a single deployment solution across varied battery fleets. It’s perfect for:

• Automotive technicians who service mixed fleets including LiFePO4 and lead‑acid packs.
• Maintenance managers in workshops or service centers seeking a reliable, multi‑chemistry charger with diagnostic support.
• Showroom staff who require safe, consistent power for battery demonstrations without risking vehicle electronics.

Practical tips to get the most from your PRO25S‑8

• Use the dedicated LiFePO4 mode for LiFePO4 packs to ensure accurate voltage regulation and fast, safe charging.
• Activate SUPPLY mode during diagnostics to prevent battery drain interrupting fault analysis.
• Leverage the lead‑acid reconditioning program for vehicles with aged or sluggish batteries to recover usable capacity.
• Space the unit where it’s easily reachable in the workshop and consider wall mounting if you want a fixed charging station.

Quality and reliability you can trust

CTEK engineers designed the PRO25S‑8 with a focus on protecting both the battery and the vehicle. Its automatic operation, 8‑stage logic, and safety features minimize user error, while the temperature sensor and low ripple help maintain battery health over time. The rugged build and IP44 rating make it suitable for demanding environments, and the 2‑year warranty offers long‑term peace of mind.