Telwin ALPINE 20 Boost Battery Charger
The Telwin ALPINE 20 Boost is a compact and reliable battery charger built in Italy for everyday automotive and light workshop use. Delivering 300W with a Quick BOOST mode for fast recovery of discharged WET (free electrolyte lead-acid) batteries — the standard flooded batteries found in most cars, motorcycles, vans and small boats — it supports both 12V and 24V systems with ease.
Key Features:
- Power: 300W
- Voltage: 12V / 24V dual voltage
- Charge Current: 18A max (12V) / 12A max (24V)
- Rated Charge Current: 12A (12V) / 8A (24V)
- Battery Capacity: 30–225Ah (12V) / 20–180Ah (24V)
- Charge Modes: Normal Charge + Quick BOOST selector
- Ammeter: Built-in for charge monitoring
- Protection: Overload & polarity reversal protection
- Power Supply: 230V single phase 50/60Hz
- Weight: 6.9 kg — lightest in the Alpine range
- Dimensions: 22.5 x 29 x 20.5 cm
- Includes: Power cable, plug, positive & negative clamps
Compatible Vehicles: Motorcycles, cars, vans, tractors, small boats
Battery Type: WET (free electrolyte lead-acid) — 12V & 24V









