28.8V 0.8A Lead Acid Battery Charger DC 5.5/2.1mm

Keep your lead acid batteries topped up and ready to go with this compact 28.8V 0.8A Lead Acid Battery Charger. Designed for reliability and ease of use, this DC charger features a standard 5.5/2.1mm connector and delivers a steady, consistent charge to extend the life of your batteries. With multiple wattage options available, it adapts to a range of battery configurations — perfect for e-bikes, mobility scooters, emergency lighting, and more.

Its compact, lightweight form factor means it slips easily into a bag or toolbox, so you're never without a charge when you need it most. The cord keeps things tidy and straightforward — just plug in and let it do the work.

Key Features

• Output Voltage: 28.8V DC — optimized for lead acid battery systems
• Output Current: 0.8A — gentle, steady charging to help maintain battery health
• Connector: DC 5.5/2.1mm — widely compatible standard plug
• Multiple wattage options to suit different battery capacities and setups
• Compact & portable — lightweight design ideal for home, workshop, or on-the-go use
• Indicator light for easy charge status monitoring
• Built-in safety protections to help prevent overcharging

Safety Tips

• Ensure adequate ventilation and heat dissipation during use — do not cover the charger while operating.
• If the charger becomes unusually warm, disconnect it immediately and inspect for any issues before resuming use.
• Use only with compatible lead acid battery systems rated for 28.8V input.

What's in the Box

• 1 × 28.8V 0.8A Lead Acid Battery Charger (DC 5.5/2.1mm)

Whether you're maintaining an e-bike battery, a backup power system, or a mobility device, this charger is a dependable tool that earns its place in any kit. Makes a great practical gift for the tinkerer or tech enthusiast in your life.

For more information on safe battery charging practices and electrical safety, visit CPSC Battery Safety.

Frequently Asked Questions

Q: What type of batteries is this 28.8V lead acid charger compatible with?

A: This charger is designed for sealed lead acid (SLA) battery packs rated at 28.8V, such as those commonly found in e-bikes, mobility scooters, emergency lighting systems, and backup power units. Always verify your battery's voltage requirements before connecting.

Q: What does the DC 5.5/2.1mm connector mean?

A: The DC 5.5/2.1mm refers to the size of the barrel connector plug — 5.5mm outer diameter and 2.1mm inner pin diameter. This is one of the most widely used DC connector sizes, ensuring broad compatibility with many battery systems and devices.

Q: How do I know when my battery is fully charged?

A: This charger features an indicator light that changes to show charging status. When charging is in progress, the light will indicate active charging; once the battery is fully charged, the indicator will change accordingly. Refer to the included documentation for specific light color meanings.

Q: Is this charger safe to leave unattended?

A: While the charger includes built-in safety features, it is best practice to monitor charging sessions and ensure the charger is in a well-ventilated area away from flammable materials. Disconnect once charging is complete and never cover the unit during operation.