OSRAM

OSRAM BATTERYstart 300

Name: OSRAM BATTERYstart 300
Brand: OSRAM

Compact dimensions and clear controls suit everyday-car storage, while documented polarity and short-circuit protection add reassurance. Deeply discharged batteries remain its decisive weakness.

$147 typical

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EDITION 01RESEARCHED 2026-10-093 SOURCESREFRESH DUE 2027-04

SUBSTANCE SCORES

substance6.1/ 10

design7.0/ 10

value6.4/ 10

WHY THE PRICE IS JUSTIFIED

The price is supported by a 13,000mAh LiCoO2 battery, 300A starting current, 1,500A claimed peak current, three-hour USB-C charging, LED work light, power-bank function and documented reverse-polarity, short-circuit and overvoltage protections. Independent test summaries report strong jump-start performance and good material feel, while noting sparse accessories.

MATERIALS

Internal batteryLithium-cobalt oxide (LiCoO2)

Provides the documented 13,000mAh energy store and 300A starting current.

HousingMaterial not specified

The compact enclosure protects the electronics, but its construction material is undocumented.

Jump-start clampsMaterial not specified

Clamps transfer starting current; their material and construction are not documented.

CRITERIA

8/10

Real Cranking Output

Manufacturer claims 300A starting current and 1,500A peak; independent test summary says the jump-start test was passed very well, but gives no measured current.

2/10

Cold Dead-Battery

Independent review summary reports no jump-start function with deeply discharged starter batteries.

7/10

Usable Battery Energy

Documented 13,000mAh LiCoO2 battery and power-bank function; usable delivered energy is not independently measured.

5/10

Leads And Clamps

Independent review describes the battery clamps as somewhat bulky and the cable-output safety feature as fiddly.

8/10

Fault Protection

Manufacturer documents reverse-polarity, short-circuit and overvoltage protection; independent fault testing is not provided.

4/10

Storage Durability

Operating range is documented as -20°C to 40°C, but storage-life, cycle-life and repairability evidence is absent.

8/10

Emergency Usability

Compact design, three-hour charging, LED work light and power-bank function support roadside use; independent review calls it relatively light and compact.

IDEAL FOR

·Drivers wanting a compact emergency starter for small to midsize 12V vehicles
·Petrol vehicles up to 6L or diesel vehicles up to 3L
·Users who also need USB device charging and an LED work light
·Keeping in a vehicle for occasional roadside emergencies

NOT FOR

·Vehicles outside the documented 6L petrol and 3L diesel limits
·Situations involving a deeply discharged starter battery
·Buyers seeking documented repairability, long-term cycle life or included mains charging accessories

DESIGN & ERGONOMICS

Compact 168 x 88 x 33mm format and approximately 848g weight make it portable for vehicle storage. It includes an LED work light, USB power-bank function and a backlit display; reviewers note somewhat awkward cable safety hardware and bulky clamps.

LONGEVITY

The source documents a LiCoO2 battery, three-hour charging and an operating range of -20°C to 40°C, but does not specify expected lifespan, cycle life, replacement battery availability or repairability. Treat battery aging and serviceability as unknown.