Battery Tender 12V 1.25AMP Battery Charger Plus is a purpose-built battery charger/maintainer designed to safely charge and maintain lead-acid (flooded, AGM, GEL). It uses an automatic charging profile and transitions to maintenance/float once the battery is full.

Best for

• Best when you want a 1.25A maintainer: small to midsize starting batteries, seasonal storage

Key technical details

• SKU: 021-0128
• UPC: 734357001280
• System voltage: 12V
• Output: 1.25A
• Charging program: 4-step smart maintainer (no overcharge float mode)

Quick technical Q&A

Will it overcharge my battery if I leave it connected?

No—once the battery reaches full charge, it switches to a maintenance/float stage to hold storage voltage instead of continuously charging.

What battery chemistry is it meant for?

This unit is intended for lead-acid (flooded, AGM, GEL). Always confirm your battery type and voltage before connecting.

How do I choose the right amperage?

Lower amps are ideal for maintenance and small batteries; higher amps are better for faster recovery on larger batteries. If unsure, pick the lowest output that comfortably meets your use case.