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Compact black rectangular charger unit with attached cables and clamps

BatteryJack inc.

BatteryJack inc. 12V 1.25A Motorcycle Battery Smart Charger Maintainer 1-20Ah

SKU CH-M8Z7-7TNVX

Charges and maintains 12 V batteries from 1 to 20 Ah at 0.75–1.25 A with waterproof construction

  • Smart 1.25 A output charges 1–20 Ah batteries efficiently
  • Universal 100–240 V input works worldwide without adapters
  • Waterproof build survives rain and splashes on any vehicle
  • Multiple connectors fit motorcycles, cars, boats and farm gear
  • Two-year warranty backs reliable long-term maintenance

Smart Charger for Small 12 V Batteries

This 1.25 A smart charger maintains and charges 12 V lead-acid batteries from 1 Ah to 20 Ah. It suits motorcycles, cars, boats, farm machinery and RVs that sit unused for long periods. The automatic multi-stage cycle prevents overcharge and keeps the battery ready for the next start.

Check Your Battery and Supply Voltage

Confirm the battery is a 12 V type rated between 1 Ah and 20 Ah before connecting. The unit accepts AC mains from 100 V to 240 V so it works on household outlets worldwide. Verify the supplied connectors match your battery terminals or obtain the correct adapter.

Waterproof Maintainer for Seasonal Vehicles

The waterproof housing lets the charger stay connected outdoors on a boat, tractor or RV through rain and humidity. It draws only 0.75 A to 1.25 A from the mains, leaving plenty of capacity on a standard circuit. No extra ventilation or mounting hardware is required beyond a flat surface near the battery.

How it compares

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

Price $19.99
Pricier than about 66% of the 1,744 comparable items (median $14.99).

Specifications

No published specifications for this item yet.

Questions about this item

What connectors come in the box and do I need to buy extra cables for my motorcycle?

The unit includes multiple connectors for motorcycles, cars, boats and farm machinery so no extra cables are needed for typical 12 V batteries.

How do I decide whether the 0.75 A or 1.25 A setting suits my battery capacity?

Use the lower 0.75 A rate for smaller batteries near 1 Ah and the 1.25 A rate for larger units up to 20 Ah.

What does the 1.25 A output mean when the charger is connected to a real battery?

It delivers up to 1.25 amps at 12 V DC, automatically adjusting between 0.75 A and 1.25 A as the battery reaches full charge.

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