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Compact rectangular black charger with red and green status LEDs and output leads

BatteryJack inc.

BatteryJack inc. 12V/6V SLA Battery Charger by TANK

SKU CH-G39F-8WZSF

A 3 A smart charger maintains 6 V and 12 V lead-acid batteries with three-stage charging and automatic shut-off

  • Charges 6 V and 12 V lead-acid batteries
  • Three-stage smart charging protects battery health
  • Automatic shut-off stops at full charge
  • Built-in short-circuit, polarity and over-voltage safeguards
  • Universal 100–240 V AC input for worldwide use

3-Stage Lead-Acid Charger

This 3.0 A smart charger handles both 6 V and 12 V sealed lead-acid batteries. It runs from 100-240 V AC at 50-60 Hz and uses constant-current, constant-voltage and float stages. LED indicators show red while charging and green when full.

For Occasional Top-Ups

Suits owners who need to maintain a single motorcycle, lawn-mower or backup battery at home. Builders who need to charge multiple packs simultaneously or require a higher amperage output should look at something else.

Built-In Protections Only

Short-circuit, reverse-polarity and over-voltage safeguards are integrated into the unit itself. No extra cables, mounting hardware or software are supplied, so the charger is ready to use straight from the box.

How it compares

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

Price $14.99
Typical for this category: the median of 1,744 items is $14.99.

Specifications

No published specifications for this item yet.

Questions about this item

What battery voltage and chemistry does the charger need to charge a 12 V lead-acid pack?

It charges 12 V or 6 V SLA batteries using a three-stage profile: constant current at 3.0 A, constant voltage between 14.3 and 14.7 V, then float at 13.5 to 13.8 V.

Can I leave the charger connected to a 6 V battery that is also wired to a vintage motorcycle's original electrical system?

Yes, the float stage holds 6.7 to 6.9 V and the unit includes short-circuit, reverse-polarity and over-voltage protection for safe long-term connection.

Which LED colour confirms the 3 A constant-current stage has finished and the battery is fully charged?

A green LED indicates the battery has reached full charge; red means the charger is still in the constant-current or constant-voltage stage.

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