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Black and yellow rectangular bench charger with LCD screen

BatteryJack inc.

BatteryJack inc. 50A Engine Start Battery Charger LCD Screen

SKU CH-B4W9-DMA6H

A 12 V charger delivers 2 A to 50 A for engine starts on cars, motorcycles, boats, farm machinery and RVs, with an LCD screen and timer

  • 50 A engine-start power for large vehicle batteries
  • Adjustable 2–20 A charge rates suit motorcycles to trucks
  • LCD screen shows real-time voltage and current status
  • 120–230 V AC input works on standard mains worldwide
  • 12 V DC output compatible with cars boats and farm machinery

Engine-start capability and charge rates

The BatteryJack inc. charger delivers up to 50 A for engine starting and offers selectable charge currents of 2 A, 5 A, 10 A, 20 A or 50 A. It operates from a 120–230 V AC supply at 50 or 60 Hz and provides 12 V DC output. The LCD screen shows status during charging and start-assist cycles.

Sustained-load behaviour

Adjustable current steps let the operator match the charge rate to battery condition, reducing heat build-up during extended sessions. The timer function limits run time automatically, so the unit can be left unattended without overcharging. Input voltage range handles fluctuating mains without tripping.

Build, connectors and daily use

Black and yellow casing houses the controls and display for bench or portable use. Multiple connectors are included to fit cars, motorcycles, boats, farm machinery and RVs. The unit is designed for maintaining and charging 12 V lead-acid batteries in workshop or field environments.

How it compares

Measured against everything we stock in Jump Starters, Chargers & Power Packs, at today’s prices. Recalculated every night.

Price $88.99
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

How hot or loud does the 50A engine-start charger get when it runs all day?

The unit delivers up to 50A for engine starting and offers selectable 2A, 5A, 10A, 20A charge rates on 12V batteries, so heat and fan noise rise with the chosen output level.

Which cables or connectors must I already have to use this charger?

It ships with multiple connectors for 12V systems and plugs into 120-230VAC mains, so no extra cables are required for typical car, boat or RV batteries.

Will the 12V 50A charger work safely alongside the older 6V equipment I keep in the workshop?

The charger is rated for 12VDC output only and provides 2-20A charging plus 50A engine start, so it is not intended for 6V batteries or legacy 6V systems.

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