BatteryJack inc. 2A/5A/10A/20A/50A Engine Start Battery Charger
A 12 V charger with selectable 2 A, 5 A, 10 A, 20 A and 50 A engine-start output for cars, motorcycles, boats, farm machinery and RVs
- Charges at five selectable rates up to 50 A for fast engine starts
- 12 V output suits cars, motorcycles, boats, farm machinery and RVs
- 120–230 V AC input works on standard mains worldwide
- Multiple connectors included for quick, secure battery attachment
- Two-year manufacturer warranty backs build quality
Multi-rate 12 V charger for vehicle batteries
The unit delivers selectable charge rates of 2 A, 5 A, 10 A, 20 A and a 50 A engine-start boost from a single 120–230 V AC supply. It targets owners of cars, motorcycles, boats, farm machinery and RVs who need one device for routine maintenance and occasional jump-starting.
Fixed 12 V DC output with manual rate selection
Output voltage is locked at 12 V DC so the charger cannot service 6 V or 24 V systems. The operator must choose the correct ampere setting for the battery size and condition; no automatic chemistry detection or voltage adaptation is provided.
Black and yellow enclosure with multiple connector
A sturdy coloured housing protects the internal components while the supplied connector set allows quick attachment to top-post, side-post or ring-terminal batteries. The 50 A start mode demands secure clamps and thick cables to handle the high current without excessive voltage drop.
How it compares
Measured against everything we stock in Jump Starters, Chargers & Power Packs, at today’s prices. Recalculated every night.
- Price $94.99
- Pricier than about 90% of the 1,744 comparable items (median $14.99).
Specifications
No published specifications for this item yet.
Questions about this item
Should I use the 2A, 5A, 10A, 20A or 50A engine-start setting for my battery?
Select 2A or 5A for small motorcycle or lawn-tractor batteries, 10A or 20A for typical car and RV batteries, and 50A only when you need an engine-start boost to crank a dead 12V system.
What does the 50A engine-start rating actually deliver when I connect the clamps?
It supplies a short 50A burst at 12VDC to turn over a starter motor, then the charger reverts to the chosen 2A–20A charge rate once the engine fires.
The input says 120-230VAC 50/60Hz — will it work on a 230V UK socket without an adapter?
Yes, the built-in supply accepts 120V to 230V at 50 or 60Hz, so a simple UK plug adapter is all that is needed for 230V mains.
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