OSRAM BATTERYcharge 901 6V/12V 1A Automatic Battery Charger for Lead-Acid Batteries

Where most compact chargers stop at a single voltage, the OSRAM BATTERYcharge 901 steps up with dual 6V and 12V output, a true 7-stage charging cycle, and an IP65-rated housing that shrugs off workshop dust and splashes. It is built for riders, gardeners, and small-vehicle owners who need a reliable, set-and-forget maintenance charger that protects the battery instead of just pushing current.

Highlights

• Dual voltage: 6V for classic bikes and small batteries, 12V for motorcycles, scooters, and lawn tractors
• 1A charging current with automatic 7-stage cycle: desulphation, soft start, bulk, absorption, analysis, recondition, and float
• Compatible with WET, AGM, GEL, and EFB lead-acid batteries from 1.2Ah to 30Ah (12V) or 1.2Ah to 14Ah (6V)
• IP65 splash and dust proof, with integrated hook for hanging near the workbench or on the vehicle
• Full protection suite: reverse polarity, short circuit, overcharge, and overheat
• LED indicators show charge status at a glance; long-term maintenance mode keeps batteries topped up safely

In daily use

Connect the crocodile clips, select 6V or 12V, and the BATTERYcharge 901 takes over. Its 1.5m mains and charging cables give you room to work, while the sealed housing means you can leave it in the garage without worry. The 7-stage algorithm revives deeply discharged batteries and then holds them at the ideal float voltage, so a winter-stored motorcycle or seasonal mower is ready when you are.

Full specifications

• Input: 220–240V AC, 50/60Hz
• Output: 6V DC or 12V DC, 1A max
• Recommended battery capacity: 6V: 1.2–14Ah; 12V: 1.2–30Ah
• Battery types: Lead-acid (WET, AGM, GEL, EFB)
• Charging stages: 7 (automatic)
• Protection: Reverse polarity, short circuit, overcharge, overheat
• IP rating: IP65
• Display: LED indicators
• Maintenance mode: Yes (float charging)
• Cables: Mains 1.5m, charging 1.5m with crocodile clips
• Mounting: Integrated hook
• Certifications: CE, UKCA, GS

Final note

For anyone maintaining a small fleet of seasonal vehicles, the BATTERYcharge 901 is a compact, durable, and intelligent charger that earns its place on the shelf.