Associated Battery Chargers & Testers

Why Associated Battery Chargers Matter

If you've ever been let down by a battery charger that overheats, underperforms, or just stops working after a year, you understand why so many shops and fleets stick with Associated Equipment. Associated has been designing and manufacturing battery chargers and testers since 1948, and a lot of their original customers are still buying parts for chargers that are decades old. That kind of staying power isn't an accident. It comes from heavy-duty transformers, automatic reset circuit breakers, and rugged construction built to survive daily use in shops, garages, and outdoor job sites.

Associated chargers aren't just for the corner garage. They're OEM-recommended equipment for major automotive manufacturers and a go-to brand for fleet, marine, and aircraft maintenance professionals. Whether you're charging a single car battery overnight or keeping an entire delivery fleet road-ready, there's an Associated charger sized for the job.

• Automotive shops: fast chargers and analyzers for daily customer turnover
• Fleet and commercial: multi-voltage chargers built for trucks, vans, and heavy equipment
• Marine and aircraft: reliable, unattended charging for high-value batteries
• DIY and home garage: dependable chargers for everyday vehicle maintenance

How to Choose an Associated Charger or Tester

Associated's lineup covers a wide range of needs, so it helps to know what you're working with before you buy:

• Standard chargers (6/12V): Best for cars, motorcycles, and light-duty applications.
• Heavy-duty fleet chargers (6/12/18/24V): Built for trucks, buses, and equipment that need higher amperage and multi-voltage flexibility.
• AGM-safe chargers: Specifically designed to charge AGM and EFB batteries without overcharging or damaging them. Look for "AGM safe" in the model name if that's your battery type.
• Carbon pile load testers: Used to test true battery condition under load, not just surface voltage. Common in shops doing pre-sale inspections or troubleshooting starting issues.
• Analyzers and electrical system testers: Check starters, alternators, and grounds in addition to the battery itself, useful for diagnosing "won't start" complaints.

Not sure which model fits your application? Our team can help you match the right charger or tester to your vehicle or fleet, just contact us and we'll point you in the right direction.

Frequently Asked Questions

Can I use an Associated charger on AGM batteries?

A: Yes, but make sure you're using a model labeled "AGM safe." Standard chargers can overcharge AGM batteries, so check the product description or give us a call if you're unsure which one matches your battery.

What's the difference between a battery charger and a battery tester?

A: A charger restores power to a battery, while a tester (like a carbon pile load tester) checks how well a battery holds and delivers power under load. Many Associated models combine both functions in a single charger/analyzer unit.

What voltage charger do I need for my fleet vehicles?

A: Most passenger vehicles use a 6 or 12-volt charger, but trucks and heavy equipment may require 24 volts or higher. Multi-voltage fleet chargers (6/12/18/24V) give you the flexibility to charge different vehicle types with one unit.

Are Associated chargers made in the USA?

A: Most Associated chargers are designed and manufactured in the USA using US and global components, though some accessories under the ATEC brand are imported. Check the individual product page for specific sourcing details.

What if my Associated charger arrives damaged or isn't the right fit?

A: We accept returns within 60 days of purchase. Visit our returns policy page for full details, or contact us if you need help choosing a replacement.